DESC:FIELD OF INVENTION
[001] This invention relates to vehicles, and more particularly to power supplies used in vehicles.

BACKGROUND OF INVENTION
[002] Currently, various types of electrical power supply systems are used in vehicles for providing power to vehicles. A power supply system can be used for powering a plurality of devices and systems present in the vehicle. The power supply system can also be used as possible starting arrangement for the internal combustion engine of the vehicle. However, with existing technology the power supply system is provided as a permanent part of the vehicle and is typically specific to the vehicle, based on parameters such as number, types and requirements of electrical systems and devices which need to be powered by the power supply system. Further, size and weight of the vehicle also decides the design of the power supply unit specific to the vehicle.
[003] Further, the power supply systems are also used extensively where a mains power supply is not available. In such a situation, electric power may be provided to plurality of units requiring electrical power for operation by means of one or more batteries or accumulators. However, both the voltage and the duration provided by such means are limited. Further, in particular where a unit requires an Alternating Current (AC) supply, Direct Current (DC) supplied by the battery does not serve purpose. Thus, for AC supply requirements, the power supply units generally comprise petrol or diesel engines driving a generator. However, a generator-engine set assembly is considerably large with limited portability.
[004] A current solution comprises an electrically-driven automobile which is operated from a standard 12 V battery or two 12 V batteries, supplying two 12 V starter motors in alternation, or two 12 V starter motors and two 24 V starter motors. The starter motors are used to drive a 12 V or 24 V alternators via an intermediate belt drive. The obtained electrical energy is fed to the starter motor driving the vehicle wheels. Alternatively two alternators may be used, with a free wheel coupling between the drive axis and the drive belt disc. However, this current solution is not capable of generating AC and cannot be used for supporting auxiliaries and external applications or devices.
[005] Another solution comprises an electric drive system which is adapted to utilize an existing vehicle with a combustion engine and to implement an electric drive capability in it by addition new electric drive system. Components of the system may be implemented rearward of the vehicle engine and transmission along the drivetrain. In some aspects, the system allows for combustions engine, electric motor, or combination powering of the vehicle. In some aspects, the vehicle's original secondary systems, such as air conditioning, and power steering, can be used in the electric motor only drive mode. However, the solution does not disclose an AC/DC power generation mechanism.
[006] Another solution comprises a 12V, 24V DC (Direct Current) double-circuit and transformation AC 220V double-circuit power supply apparatus for the automobile. This solution comprises of existing single-circuit power supply and a circuit of automobile power generation-battery jar (charging)-inverter transformation apparatus. The output conversion apparatus is arranged as two circuits so that the two-circuit power supplies can simultaneously respectively supply power, or can switch to singly alternatively supply power. Thus the power supply capacity can be increased and the continuous and reliable power-supply can be ensured. The apparatus comprises a group of single-circuit automobile generators, a battery jar and an inverter. This solution lacks safety features, is not flexible to be used as possible starting arrangement for the internal combustion engine and lacks intelligence to communicate with the internal combustion engine for better control.

OBJECT OF INVENTION
[007] The principal object of the embodiments herein is to provide a power supply system for a vehicle, wherein the power supply system is a portable, flexible, multiple output system providing AC output and DC output.
[008] Another object of the embodiments herein is to provide a power supply system, wherein the flexibility and the portability of the power supply system enables the power supply system to be fitted on to a combustion engine located in any vehicle.
[009] A further object of the embodiments herein is to provide a power supply system that can be used as a starting mechanism for the combustion engine of a vehicle.
[0010] A further object of the embodiments herein is to provide a power supply system that comprises at least one electrical and/or mechanical safety mechanism.

BRIEF DESCRIPTION OF FIGURES
[0011] This invention is illustrated in the accompanying drawings, through out which like reference letters indicate corresponding parts in the various figures. The embodiments herein will be better understood from the following description with reference to the drawings, in which:
[0012] FIG. 1 illustrates an architecture for a power supply system, according to embodiments as disclosed herein;
[0013] FIG. 2 depicts the architecture of controller central control unit, according to embodiments as disclosed herein; and
[0014] FIG. 3 depicts a method for generating electrical energy to be supplied to one or more components using the power supply unit, according to embodiments as disclosed herein.

DETAILED DESCRIPTION OF INVENTION
[0015] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.
[0016] The embodiments herein provide a power supply system for a vehicle, wherein the power supply system is a portable, flexible, multiple output system providing AC output and DC output. The power supply system can produce DC outputs and AC outputs at multiple levels providing a range of AC voltages and DC voltages when connected to combustion engine of the vehicle. The flexibility and the portability provided by the power supply system enables the power supply system to be fitted on to a combustion engine located in any vehicle and do not restrict it to a particular vehicle. Further, the power supply system can be used as a starting mechanism for the combustion engine of a vehicle. Thus, the power supply system is capable of operating as a starter motor providing torque to the combustion engine to enable a smoother crank. The power supply system is capable of communicating with the combustion engine to operate on the desired speeds ranges under stand-still operations.
[0017] In an embodiment, the power supply system proposed can be a portable, multi utility Power Take off (PTO) system that can be adapted to vehicles of varying track width. The power supply system as disclosed herein, need not necessarily be a part of the vehicle, since power take off systems are used when the vehicle is in standstill condition. Thus, the embodiments herein provide a vehicle make independent, vehicle platform independent, power train independent power supply system which is not necessarily part of the vehicle and could be deployed as an after-market solution. This allows vehicle owners to have the flexibility to buy one power supply unit and use it in multiple vehicles of multiple makes and platforms. Embodiments herein provide a cost effective, versatile, vehicle and vehicle platform independent power supply system to achieve the same results as that of using a vehicle fitted power take off unit. The power supply system comprises one or more electrical and/or mechanical safety mechanisms providing safety to a user of the power supply system or to the power supply system or the vehicle.
[0018] The term ‘vehicle’ as used herein can refer to any vehicle, which can be used for transportation, performing tasks, and/or recreation. Examples of a vehicle can be a car, a motorbike, a scooter, a van, a bus, truck or any other equivalent means of transport, which can use a road for movement.
[0019] FIG. 1 depicts the architecture for a power supply system 100. The power supply system 100 is coupled to a Vehicle Power train (VPT) 101 of a vehicle, which comprises of components required for the propulsion of the vehicle. The VPT 101can include the combustion engine of the vehicle. An engine 103 of the power supply system is coupled with the VPT 101 using a coupler 102. The engine 103 outputs a 3-phase power supply. A first bi-directional AC Power Interface (b-API) unit 104, referred hence forth as b-API 1 104, is an electronic control unit that enables the engine 103 to operate in one of engine modes including a motor mode or a generator mode. When operating in generator mode, the engine 103 functions as generator to generate a three phase AC power at a first three phase AC voltage level. The b-API1 104 converts the 3-phase AC power supplied by the engine 103 to DC power at a first DC voltage level. When operating as a generator, electric energy power is stored in a first energy storage device 105, hence forth referred as energy storage device 105. The b-API1 104 can also supply the loads (supply power to one or more electrical components of the vehicle) through a first bi-directional DC power Interface (b-DPI) unit, hence forth referred as b-DPI 1061 108 and a second bi-directional DC power Interface (b-DPI) unit 108, hence forth referred as b-DPI2 108. The stored power in the energy storage device 105 can be used by the engine 103 for starting and assisting the combustion engine through the coupler 102 and the VPT 101, when in motor mode. A second bi-directional AC Power Interface unit 107, referred hence forth as b-API 2 107, can be configured to convert the DC power produced by the engine 103 using the b-API1 104 to single phase and three phase power supplies to provide AC power at a first single phase AC voltage level and a second three phase AC voltage level, when in generator mode. The b-API2 107 can also convert power from single phase or three phase to DC power to supply the engine 103 through the b-DPI2 106 (with DC power at a third DC voltage level) and the b-API 104 (with the AC power at the first three phase AC voltage level), when in motor mode. The b-API2 107 can also charge the energy storage device 105 through b-DP12 106. The b-DPI1 108 is an electronic control unit that converts the DC power at the first DC voltage level, produced combined by the engine 103 and the b-API1 104, to DC power at a second DC voltage level. This second DC voltage level can be provided to power the vehicle onboard loads (electrical components), the energy storage system 109 and other external loads. The b-DPI1 108 can also convert the power from the energy storage system 109 to power the BSG through the b-API1 104. The b-API1 104, the b-API2 107, the b-DPI1 108 and the b-DPI2 106 have functions for self-protection against over temperature, over current and over voltage.
[0020] FIG. 2 depicts the architecture of controller central control unit 202. The control unit 202 is an electronic control unit that controls the b-API1 104, the b-DPI2 106, the b-API2 107 and the b-DPI1 108. The control unit 202 communicates with the b-API1 104, the b-DPI2 106, the b-API2 107, the b-DPI1 108 and the vehicle controller 201 using a communication channel 203. The control unit 202 fetches the information of the current state of the vehicle and its components to decide the power flow through the b-API1 104, the b-DPI2 106, the b-API2 107 and the b-DPI1 108.
[0021] Embodiments herein disclose an apparatus for use in vehicles, the apparatus comprising: the engine 103, the b-API1 104, the energy storage device 105, and the control unit 202. The b-API1 104 is configured to convert AC power at the first three phase voltage level ( AC power at voltage level 1) to DC power at the first DC voltage level (DC power at voltage level1) when commanded by the control unit 202, when in generator mode. The b-API1 104 is further configured to convert the DC power at voltage level 1 to AC power at voltage level 1 when commanded by the control unit 202, when in motor mode.
[0022] The energy storage device 105 is configured to store charge from the b-API1 104 when instructed by the control unit 202, when in generator mode. The energy storage device 105 is further configured to store charge from the b-DPI1 108 when commanded by the control unit 202, when in motor mode. The energy storage device 105 is further configured to store charge from the b-DPI 2 106, when commanded by the control unit 202. The energy storage device 105 is further configured to discharge when instructed by the control unit 202.
[0023] In an embodiment herein, the system can further comprise of the b-API2 107; wherein the b-API2 107 is operable to convert the DC power at voltage level 3 (the third DC voltage level) to AC power at voltage level 2 (second three phase AC voltage level or first single phase AC voltage level) when instructed by the control unit 202, when in generator mode. The b-API2 107 is further operable to convert the AC power at Voltage level 2 to the DC power at Voltage level 3 when instructed by the control unit 202.
[0024] In an embodiment herein, the power supply system 100 can further comprise of the b-DPI1 108; wherein the b-DPI1 108 is configured to convert a DC power at voltage level 1 to DC power at voltage level 2 (second DC voltage level). The b-DPI1 108 is further configured to convert DC power at voltage level 2 to DC power at voltage level 1.
[0025] In an embodiment herein, the system can further comprise of the b-DPI2 106, wherein the b-DPI2 106 is configured to convert DC power at voltage level 1 to DC power at voltage level 3. The b-DPI2 106 is further configured to convert the DC power at voltage level 3 to DC power at voltage level 1.
[0026] Embodiments herein refer to voltage level 1 as the output of the b-API1 104, the input of the b-DPI1 108, and the input of the b-DPI2 106.
[0027] Embodiments herein refer to voltage level 2 as the output of the b-DPI1 108.
[0028] Embodiments herein refer to voltage level 3 as the output of the output of the b-DPI2 106, and the input of the b-API 2 107.
[0029] Embodiments herein further comprise the engine 103, which is operable to convert electrical energy input to mechanical energy output when commanded by the control unit 202, when in motor mode. In an embodiment herein, there can be multiple engines 103 present in the vehicle. The engine 103 can further convert mechanical energy input to electrical energy output when commanded by the control unit 202, when in generator mode. The engine 103 is connected to the power train of the vehicle (VPT 101). In an embodiment herein, the engine 103 can be connected to the propulsion means of the vehicle through a coupling flange arrangement, wherein the connection between the flanges can be secured using a locking arrangement and connected to the propulsion means through splines, wherein a mating spline feature is available on the propulsion means operable to connect with the spline on the engine 103.
[0030] In an embodiment herein, the engine 103 can be connected to the propulsion means through a torque multiplication arrangement. The connection through the torque multiplication arrangement could be an exclusive connection between the engine 103 and the propulsion means. The connection through the torque multiplication arrangement could connect multiple power sources and power consuming systems and/or devices and the engine 103. The torque multiplication device can be at least one of a belt and pulley arrangement, a gear arrangement, a planetary gear system arrangement, and so on.
[0031] The torque multiplication device can be connected to the main torque multiplication device of the vehicle through splines, wherein a mating spline features is available on the main torque multiplication device operable to connect with the spline on the engine 103. In an embodiment herein, the engine 103 can be connected to the connected to the main torque multiplication device of the vehicle, wherein the connection to the main torque multiplication device can be through a secondary torque multiplication device wherein the secondary torque multiplication device could be at least one of a belt and pulley arrangement, a gear arrangement, a planetary gear system arrangement, and so on. In an embodiment herein, the engine 103 can be connected to the main torque multiplication device of the vehicle through a coupling flange wherein the connection between the coupling flanges is secured through a locking arrangement.
[0032] In an embodiment herein, the engine 103 can be connected to the torque vectoring device of the vehicle, wherein the connection to the torque vectoring device can be through a coupling flange wherein the connection between the coupling flanges is secured using a locking arrangement. In an embodiment herein, the engine 103 can be connected to the torque vectoring device of the vehicle through splines on the engine 103, wherein a mating spline feature is available on the torque vectoring device operable to connect with the spline on the engine 103. In an embodiment herein, the engine 103 can be connected to the torque vectoring device of the vehicle through a secondary torque multiplication device wherein the secondary torque multiplication device could be a belt and pulley arrangement, a gear arrangement, a planetary gear system arrangement, and combinations thereof.
[0033] The engine 103 can be connected to the propulsion means directly. The engine 103 can be connected to the propulsion means through a torque filtering unit. The engine 103 can be connected to the propulsion means through a torque modulating device. The engine 103 can be connected to the propulsion means through a separation device controlled through an actuator or combinations thereof.
[0034] The engine 103 can be connected to the main torque multiplication device directly. The engine 103 can be connected to the main torque multiplication device through a torque filtering unit. The engine 103 can be connected to the main torque multiplication device through a torque modulating device. The engine 103 can be connected to the main torque multiplication device through a separation device controlled through an actuator or combinations thereof.
[0035] The engine 103 can be connected to the torque vectoring device directly. The engine 103 can be connected to the torque vectoring device through a torque filtering unit. The engine 103 can be connected to the torque vectoring device through a torque modulating device. The engine 103 can be connected to the torque vectoring device through a separation device controlled through an actuator or combinations thereof.
[0036] The engine 103 can convert electrical energy supplied into mechanical energy. The engine 103 can start the propulsion means when connected to the powertrain through a connection to the propulsion means. The engine 103 can provide the mechanical energy to move the vehicle through a torque multiplication device and/or a torque vectoring device. The engine 103 can drive the power consumers in drive system only by disengaging the drive system coupling to the propulsion means through a dis-engaging mechanism controlled through the control unit 202 when the engine 103 is connected to the powertrain through the propulsion means.
[0037] The engine 103 converts mechanical energy available on its rotating member from the vehicle kinetic energy into electrical energy, when in generator mode, for at least one of supplying on-board electrical loads, storing energy in the energy storage device when 105/109, supplying external electrical loads, to store energy in at least one external energy storage means, and so on.
[0038] The engine 103 converts mechanical energy available on its rotating member from the mechanical drive generated by the propulsion means into electrical energy for at least one of supplying on-board electrical loads, storing energy in on-board energy storage device 105/109, supplying external electrical loads, to store energy in at least one external energy storage means, and so on.
[0039] In an embodiment herein, the engine 103 can be built with galvanic isolation between the electrical circuits in the engine 103 and the electrical chassis of the engine 103, which is further connected to the electrical chassis of the vehicle.
[0040] The engine 103 can incorporate a means to monitor the status of exposure of conducting parts at the power interconnections that are accessible to users with (or) without use of any special tools. The users being one of the group comprising of vehicle users, service personnel, state regulators, vehicle manufacturers, first responders and combinations thereof.
[0041] The engine 103 can comprise a means to monitor the status of exposure of conducting parts. The engine 103 can incorporate a means to communicate the status of exposure of conducting parts that are accessible to users to the control unit 202.
[0042] The engine 103 can be capable of being operated in a no-load condition, wherein the supply to the main conductors of the engine is maintained in open state by the control unit 202.
[0043] The engine 103 can be capable of being operated in short circuit mode where in the U, V and W phases of the 103 are short electrically by the control unit 202. The engine 103 can be capable of operating without any damage to the engine or interfacing devices until a defined speed threshold of its operating speed, when in short circuit mode.
[0044] The b-API1 104 can regulate the AC output from the engine 103 within a specified tolerance level. The b-API1 104 can regulate the AC output from the engine 103 to a specified AC voltage level and within a specified tolerance level rectify the AC output from the engine 103. The b-API1 104 can rectify the AC output from the engine 103 and convert it to a DC power of specified voltage level. The b-API1 104 can rectify and regulate the AC output from the engine 103. The b-API1 104 can rectify and regulate the AC output from the engine 103 and convert it to a DC power of specified voltage level; and combinations thereof.
[0045] The b-API1 104 can comprise of control logics defined and stored in a non-volatile, electronic storage media as instructions for computing device stored thereon, for use with a vehicle, the instructions for computing device capable of being read by a computing device and being capable of instructing the computing device, and perform regulation, rectification and voltage modulations.
[0046] The b-API1 104 can comprise of control logics defined and stored in a non-volatile, electronic storage media as instructions for computing device stored thereon, for use with a vehicle, the instructions for computing device capable of being read by a computing device and being capable of instructing the computing device, and perform temperature compensation.
[0047] The b-API1 104 can be configured to regulate the electrical output incorporating the temperature compensation, wherein the temperature compensation incorporated considers temperate at output terminals of the b-API1 104, input terminals of the interfacing devices which interface with the power output of b-API1 104 and combinations thereof.
[0048] The b-API1 104 can interface with the energy storage device 105/109. The b-API1 104 can convert the electrical energy stored as DC in the energy storage device 105/109 into AC power to power the engine 103.
[0049] The b-API1 104 can control the engine 103, when the engine 103 is converting the mechanical energy available in its rotating member drawn from the kinetic energy of wheels in to electrical energy, when in generator mode. The b-API1 104 can control the engine 103, when the engine 103 is converting the mechanical energy available in its rotating member drawn from the propulsion means in to electrical energy.
[0050] The b-API1 104 can convert the DC power stored in the energy storage device 105/109 in to AC power for the engine 103 to provide traction power to the wheels of the vehicle through at least one of the main torque multiplication device, or the torque vectoring device. The b-API1 104 can convert the DC power stored in the energy storage device 105/109 in to AC power for the engine 103 to start the propulsion means of the vehicle. The b-API1 104 can convert the DC power stored in the energy storage device 105/109 in to AC power for the engine 103 to provide drive to the loads on the drive system only. The b-API1 104 can convert the DC power stored in the energy storage device 105/109 in to AC power for the engine 103 to provide drive the loads on the drive system. The b-API1 104 can convert the DC power stored in the energy storage device 105/109 in to AC power for the engine 103 to provide traction power to the wheels of the vehicle through at least one of the main torque multiplication device, or the torque vectoring device.
[0051] The b-API1 104 can interface with the b-DPI1 108. The b-API1 104 can interface with the b-DPI1 108 and power on-board electrical loads through the b-DPI1 108. The b-API1 104 can interface with b-DPI1 108 and start the propulsion means through the engine 103 using the power available from the b-DPI1 108. The b-API1 104 can interface with b-DPI1 108 and drive the accessories connected to the drive system when the engine 103 is connected to the propulsion means, using the power available from the b-DPI1 108. The b-DPI1 108 can draw power from a suitable source such as an on-board 14V energy storage device, an externally connected power source, an external power source connected in parallel to the on-board 14V Power source of the vehicle, and so on.
[0052] The b-API1 104 can interface with the b-DPI2 106. The b-API1 104 can interface with the b-DPI2 106 to convert the DC power output from b-API1 104 to a DC power of different level through the b-DPI2 106. The b-API1 104 can interface with the b-DPI2 106 and start the propulsion means through the engine 103 using the power available from the b-DPI2 106. The b-API1 104 can interface with the b-DPI2 106 and drive the accessories connected to the drive system, when the engine 103 is connected to the propulsion means, using the power available from the b-DPI2 106. The b-DPI2 106 can draw power from the b-API2 107 which can in-turn draw power from a suitable source such as a wall socket, an energy storage means, and so on.
[0053] The b-API1 104 can be built with galvanic isolation between the electrical circuits in the b-API1 104 and the electrical chassis of the vehicle. The b-API1 104 can also incorporate a provision to monitor the status of exposure of conducting parts at the power interconnections which are accessible to users without use of any special tools – the users being one of the groups comprising of vehicle users, service personnel, state regulators, vehicle manufacturers, first responders or combinations thereof. The b-API1 104 can be configured to detect violation in galvanic isolation, wherein the detection of violation in galvanic isolation includes violation between electrical chassis of the vehicle and at least one of positive charge carrier in DC power side of b-API1 104, negative charge carrier in DC-Power side of b-API1 104, U phase in AC power side of b-API1 104, V phase in AC power side of b-API1 104, W phase in AC power side of b-API1 104, U phase of AC power side in the engine 103, V phase of AC power side in the engine 103, W phase of AC power side in the engine 103 and combinations thereof. On detecting a violation in galvanic isolation, the b-API1 104 can validate the detection before confirming the status of violation in galvanic isolation as detected by the b-API1 104. The b-API1 104 can further communicate the violation to the control unit 202 after a defined de-bounce time and within a defined time threshold which is greater than the defined de-bounce time threshold. On validating the detection, the b-API1 104 can initiate a set of actions to drive the system in to safe state.
[0054] The b-API1 104 comprises of a diagnostic module that monitors the status of exposure of conducting parts at the power interconnections that are accessible to users. On detecting a failure, the b-API1 104 can register a failure in a suitable location such as an electrically erasable Programmable Read Only Memory. The b-API1 104 can further initiate a defined set of reactions to ensure the system is in safe state.
[0055] The b-API1 104 comprises of an Active Discharge Unit (ADU) 1 which is operable to discharge the charge stored in capacitors of the b-API1 104 within a defined time when commanded by the control unit 202, wherein the ADU 1 does not discharge the stored energy when not commanded by the control unit 202. The b-API1 104 can further comprise of a diagnostic module which monitors the health of the ADU 1. On detecting a failure in the ADU 1, the b-API1 104 can register a failure in a suitable location such as its electrically erasable Programmable Read Only Memory. The b-API1 104 can further initiate a defined set of reactions to ensure the system is in safe state.
[0056] The b-API1 104 further comprises of a Passive Discharge Unit (PDU) 1 which is operable to discharge the charge stored in capacitors of the b-API1 104 within a defined time operating continuously. The b-API1 104 can further comprise of a diagnostic module which monitors the health of the PDU 1. On detecting a failure in the PDU 1, the b-API1 104 can register a failure in a suitable location such as its electrically erasable Programmable Read Only Memory. The b-API1 104 can further initiate a defined set of reactions to ensure the system is in safe state.
[0057] The b-API1 104 is further capable of controlling the engine 103 with connection to the windings galvanically. The b-API1 104 can maintain the windings open, when the rotational speed of engine 103 is zero or non-zero.
[0058] The b-API1 104 is configured for operating the engine 103 in short circuit mode, wherein the U, V & W phases of the engine are short electronically in the b-API1 104. The b-API1 104 can be capable of operating without any damage to the b-API1 104 or interfacing devices until a defined speed threshold of the rotational speed of the engine.
[0059] The b-API1 104 is configured for operating the engine 103 in short circuit mode, wherein the U, V & W phases of the engine are short electronically in the b-API1 104, when the current operating rotational speed of the engine is less than a defined rotational speed threshold.
[0060] The b-API1 104 is configured for operating the engine 103 within its defined safe operating limits. When the engine 103 is driven to a state beyond these limits, the b-API1 104 is capable of driving itself and the engine 103 to a safe state protecting itself and the engine 103 from any possible damages without causing any safety violation at the system level.
[0061] The b-API1 104 can be mounted on to the engine 103. The b-API 104 can be mounted on to at least one of the engine compartments of the vehicle, chassis of the vehicle, passenger compartment of the vehicle, trunk of the vehicle, or any other suitable location.
[0062] The b-API1 104 can comprise of control logics defined and stored in a non-volatile, electronic storage media as instructions for computing device stored thereon, for use with a vehicle, the instructions for computing device capable of being read by a computing device and being capable of instructing the computing device; and performing operations as disclosed above.
[0063] The b-DPI1 108 can convert the electrical power (at voltage level 1) available at the output of b-API1 104, at the energy storage device 105, or at the input of the b-DPI2 106, to electrical power at 14V. The b-DPI1 108 can convert electrical power at 14V on LV side to electrical power at the voltage level 1. The b-DPI1 108 can operate in neutral mode wherein neither conversion from voltage level 1 to 14V nor conversion from 14V to voltage level 1 is occurring.
[0064] The b-DPI1 108 can comprise of control logics defined and stored in a non-volatile, electronic storage media as instructions for computing device stored thereon, for use with a vehicle, the instructions for computing device capable of being read by a computing device and being capable of instructing the computing device; and performing the voltage modulations as described above.
[0065] The b-DPI1 108 can perform temperature compensation, when performing converting electrical output, wherein the temperature compensation considers temperature at output terminals of the b-DPI1 108, input terminals of the interfacing devices which interface with the power output of b-DPI1 108 and combinations thereof. The b-DPI1 108 can comprise of control logics defined and stored in a non-volatile, electronic storage media as instructions for computing device stored thereon, for use with a vehicle, the instructions for computing device capable of being read by a computing device and being capable of instructing the computing device; and perform temperature compensation.
[0066] The b-DPI1 108 can interface with the energy storage device 105/109. The b-DPI1 108 can convert the DC power stored in the energy storage device 105 at voltage level 1 to DC power at 14V to supply power for at least one of 14V LV boardnet consumers; charging the 14V LV energy storage system; supplying external 14V loads connected to the 14V boardnet network; storing energy in 14V external energy storage system; or combinations thereof. The b-DPI1 108 can convert the DC power stored in 14LV Energy Storage System of the vehicle into DC power of voltage level 1 for the engine 103 to start the propulsion means of the vehicle, to drive accessory loads on the drive system, to propel the vehicle and combinations thereof.
[0067] The b-DPI1 108 can interface with the b-DPI2 106. The b-DPI1 108 can convert the DC electrical power at downstream of the b-DPI2 106, operating at voltage level 1 to DC power at 14V at downstream of b-DPI1 108 to supply power connected to downstream of b-DPI1 108 for at least one of 14V LV boardnet consumers; charging the 14V LV energy storage system; supplying external 14V loads connected to 14V boardnet network; storing energy in 14V external energy storage system; or combinations thereof.
[0068] The b-DPI1 108 can convert the 14V DC electric power available at 14V LV energy storage system or supplied by an external 14V DC power supply interfaced to downstream of the b-DPI1 108 into DC electrical power at voltage level 1 at downstream of the b-DPI2 106 which is connected upstream of the b-DPI1 108 for driving the AC loads available upstream of the b-DPI2 106 connected to the AC loads through the b-API2 107.
[0069] The b-DPI1 108 can interface with the b-API1 104. The b-DPI1 108 can convert the DC electrical power at upstream of the b-API1 104 operating at voltage level 1, connected to the upstream of the b-DPI1 108 to DC power at 14V at downstream of the b-DPI1 108 to supply power connected to downstream of b-DPI1 108 for at least one of 14V LV boardnet consumers; charging the 14V LV energy storage system; supplying external 14V loads connected to 14V boardnet network; storing energy in 14V external energy storage system; or combinations thereof.
[0070] The b-DPI1 108 can convert 14V DC electric power available at 14V LV energy storage system or supplied by an external 14V DC power supply interfaced to downstream of the b-DPI1 108 in to DC electrical power at voltage level 1 at upstream of the b-DPI1 108 which is connected to the upstream of b-API1 104 for driving the electrical engine 103 to deliver power for at least one of starting the propulsion means of the vehicle if the engine 103 is connected to the propulsion device, to drive accessory loads on the drive system if the engine 103 is connected to the propulsion means, to propel the vehicle and combinations thereof.
[0071] The b-DPI1 108 can comprise of galvanic isolation between the electrical circuits in the b-DPI1 108 and the electrical chassis of the vehicle. The b-DPI1 108 can comprise of a galvanic isolation between the electrical circuits in the b-DPI1 108. The b-DPI1 108 can also incorporate a provision to monitor the status of exposure of conducting parts at the power interconnections which are accessible to users without use of any special tools – the users being one of the groups comprising of vehicle users, service personnel, state regulators, vehicle manufacturers, first responders or combinations thereof. The b-DPI1 108 can detect a violation in galvanic isolation, wherein the detection of violation in galvanic isolation includes violation between electrical chassis of the vehicle and one of the groups comprising of positive charge carrier in DC power side of b-DPI1 108, negative charge carrier in DC-Power side of b-DPI1 108, and combinations thereof. On detecting a violation, the b-DPI1 can validate the detection before confirming the status of violation in galvanic isolation. The b-DPI1 108 can communicate the violation to the control unit 101 after a defined de-bounce time and within a defined time threshold which is greater than the defined de-bounce time threshold. The b-DPI1 108 can further initiate a set of actions to drive the system in to safe state.
[0072] The b-DPI1 108 can further comprise of a diagnostic module that monitors the status of exposure of conducting parts at the power interconnections that are accessible to users. The b-DPI1 108 further comprises of a diagnostic module that monitors the status of exposure of conducting parts at the power interconnections that are accessible to users, registers a failure in a suitable location such as an electrically erasable Programmable Read Only Memory.
[0073] The b-DPI1 108 comprises of a diagnostic module that monitors the status of exposure of conducting parts at the power interconnections which are accessible to users. The diagnostic module can register a failure in a suitable location such as the electrically erasable Programmable Read Only Memory and the b-DPI1 108 can initiate a defined set of reactions to ensure the system is in safe state.
[0074] The b-DPI1 108 comprises of an optional Active Discharge Unit (ADU) 2 that is operable to discharge the charge stored in capacitors of the b-DPI1 108 within a defined time, when commanded by the controller unit 202, wherein the ADU 2 does not discharge the energy stored in capacitors when not commanded by the controller unit 202. The b-DPI1 108 comprises of a diagnostic module that monitors the health of ADU 2. On the diagnostic module detecting a failure in ADU 2, the b-DPI1 108 registers a failure in a suitable location such as an electrically erasable Programmable Read Only Memory. The b-DPI1 108 further initiates a defined set of reactions to ensure the system is in safe state.
[0075] The b-DPI1 108 further comprises of an optional Passive Discharge Unit (PDU) 2 that is operable to discharge the charge stored in capacitors of the b-DPI1 108 within a defined time operating continuously.
[0076] The b-DPI1 108 further comprises of a diagnostic module that monitors the health of PDU 2. The b-DPI1 108 comprises of a diagnostic module that monitors the health of PDU 2. On the diagnostic module detecting a failure in PDU 2, the b-DPI1 108 registers a failure in a suitable location such as an electrically erasable Programmable Read Only Memory. The b-DPI1 108 further initiates a defined set of reactions to ensure the system is in safe state.
[0077] The b-DPI1 108 is configured for operating within its defined safe operating limits and when it is driven to a state beyond these limits, the b-DPI1 108 is capable of driving itself to a safe state protecting itself from any possible damages without causing any safety violation at the system level.
[0078] The b-DPI1 108 comprises of; control logics defined and stored in a non-volatile, electronic storage media as instructions for computing device stored thereon, for use with a vehicle, the instructions for computing device capable of being read by a computing device and being capable of instructing the computing device; perform the operations as disclosed above.
[0079] The b-DPI2 106 can convert the DC electrical power at the output of b-API1 104, at the energy storage device 105 or the input of b-DPI1 108, wherein the defined points operate at voltage level 1, to DC electrical power at Voltage level 3. The b-DPI2 106 can convert DC electrical power at Voltage level 3 to DC electrical power at the voltage level 1. The b-DPI2 106 can operate in neutral mode wherein neither conversion from voltage level 1 to voltage level 2 or conversion from voltage level 3 to voltage level 1 are not occurring; or combinations thereof. The b-DPI2 106 comprises of control logics defined and stored in a non-volatile, electronic storage media as instructions for computing device stored thereon, for use with a vehicle, the instructions for computing device capable of being read by a computing device and being capable of instructing the computing device; and perform the voltage modulations as disclosed above.
[0080] The b-DPI2 106 is configured to operate as disclosed above, with capability to convert the electrical output incorporating the temperature compensation, wherein the temperature compensation considers temperate at output terminals of the b-DPI2 106, input terminals of the interfacing devices which interface with the power output of b-DPI2 106 and combinations thereof. The b-DPI2 106 comprises of control logics defined and stored in a non-volatile, electronic storage media as instructions for computing device stored thereon, for use with a vehicle, the instructions for computing device capable of being read by a computing device and being capable of instructing the computing device; and perform the temperature compensation as disclosed.
[0081] The b-DPI2 106 is configured to interface with the energy storage device 105/109. The b-DPI2 106 can be configured to convert the DC power at the energy storage device 105/109 operating at voltage level 1 to DC power at Voltage level 3 to supply power for at least one of electrical consumers operating at DC power of voltage level 3; charging external energy storage system operating at DC power of voltage level 3; supplying external electrical consumers operating at DC power of voltage level 3; supplying external electrical consumers operating at AC power of voltage level 3 through b-API2 107; or combinations thereof.
[0082] The b-DPI2 106 can convert the DC power at voltage level 3 to DC power at voltage level 1 for storing the energy as DC power at voltage level 1 in the energy storage device 105/109.
[0083] The b-DPI22 106 can be configured to interface with the b-DPI1 108. The b-DPI2 106 is configured to convert the DC electrical power at upstream of the b-DPI1 108 operating at voltage level 1 to DC power at voltage level 3 upstream of the b-DPI2 106 to supply power upstream of b-DPI2 106 for at least one of electrical consumers operating at DC power of voltage level 3; charging external energy storage system operating at DC power of voltage level 3; supplying external electrical consumers operating at DC power of voltage level 3; supplying external electrical consumers operating at AC power of voltage level 3 through b-API2 107; or combinations thereof.
[0084] The b-DPI2 106 is configured to interface with the b-API2 107. The b-DPI2 106 can be configured to convert DC electric power at voltage level 3 available at downstream of the b-API2 107 connected to the upstream of the b-DPI2 106 to DC electrical power at voltage level 1 at downstream of the b-DPI2 106 to supply power to at least one of storing energy as DC power at voltage level 1 in the energy storage device 105/109; supplying electrical consumers operating at voltage level 2, connected to downstream of the b-DPI1 108, through the b-DPI1 108, supplying external electrical consumers operating at voltage level 2 connected to downstream of the b-DPI1 108, through the b-DPI1 108; storing energy as DC power at voltage level 2 in the in-vehicle LV energy storage device connected to downstream of the b-DPI1 108, through the b-DPI1 108; storing energy as DC power at voltage level 2 in external LV energy storage device connected to downstream of the b-DPI1 108, through the b-DPI1 108; powering the engine 103 through b-API1 104 to start the propulsion means; powering the engine 103 through b-API1 104; powering the accessory devices if the engine 103 is connected to the propulsion means; powering the engine 103 through b-API1 104 to propel the vehicle; or combinations thereof.
[0085] The b-DPI2 106 is configured to interface with the b-API1 104. The b-DPI2 106 is configured to convert the DC electrical power at upstream of the b-API1 104 operating at voltage level 1, connected to the downstream of the b-DPI2 106 to DC power at voltage level 3 at upstream of the b-DPI2 106 to supply power connected to upstream of the b-DPI2 106 for at least one of electrical consumers operating at DC power of voltage level 3; charging an external energy storage system operating at DC power of voltage level 3; supplying external electrical consumers operating at DC power of voltage level 3; supplying external electrical consumers operating at AC power of voltage level 3 through b-API2 107; or combinations thereof.
[0086] The b-DPI2 106 is configured to convert DC electric power at voltage level 3 available at the downstream of the b-API2 107 interfaced to upstream of the b-DPI2 106 into DC electrical power at voltage level 1 at downstream of the b-DPI2 106 which is connected to the upstream of the b-API1 104 for supplying power to at least one of powering the engine 103 through b-API1 104 to start the propulsion means if the engine 103 is connected to the propulsion means; powering the engine 103 through b-API1 104 to power the accessory devices if the engine 103 is connected to the propulsion means; powering the engine 103 through b-API1 104 to propel the vehicle; or combinations thereof.
[0087] The b-DPI2 106 can comprise of galvanic isolation between the electrical circuits in the b-DPI2 106 and the electrical chassis of the vehicle. The b-DPI2 106 can comprise of galvanic isolation between the electrical circuits in the b-DPI2 106. The b-DPI2 106 also comprises means to monitor the status of exposure of conducting parts at the power interconnections which are accessible to users without use of any special tools – the users being at least one of the groups comprising of vehicle users, service personnel, state regulators, vehicle manufacturers, first responders or combinations thereof. The b-DPI2 106 can detect violations in galvanic isolation, wherein the detection of violation in galvanic isolation includes violation between electrical chassis of the vehicle and at least one of positive charge carrier in DC power side of b-DPI2 106, negative charge carrier in DC-Power side of b-DPI2 106, and combinations thereof. The b-DPI2 106 can validate the detection before confirming the status of violation in galvanic isolation. The d-DPI2 106 can communicate the detected violation to the control unit 202 after a defined de-bounce time and within a defined time threshold which is greater than the defined de-bounce time threshold. The b-DPI2 106 can validate the detection and initiate a set of actions to drive the system in to safe state.
[0088] The b-DPI2 106 comprises of a diagnostic module that monitors the status of exposure of conducting parts at the power interconnections that are accessible to users. The b-DPI2 106 can register a failure in a suitable location such as an electrically erasable Programmable Read Only Memory. The b-DPI2 106 can initiate a defined set of reactions to ensure the system is in safe state.
[0089] The b-DPI2 106 comprises of an optional Active Discharge Unit (ADU) 3 which is configured to discharge the charge stored in capacitors of the b-DPI2 106 within a defined time when commanded by the control unit 202, wherein the ADU 3 does not discharge the energy stored in capacitors when not commanded by the control unit 202. The b-DPI2 106 comprises of a diagnostic module that monitors the health of the ADU 3. On detecting a failure in the ADU 3, the b-DPI2 106 registers a failure in a suitable location such as an electrically erasable Programmable Read Only Memory. The b-DPI2 106 further initiates a defined set of reactions to ensure the system is in safe state.
[0090] The b-DPI2 106 comprises of an optional Passive Discharge Unit (PDU) 3 that is configured to discharge the charge stored in capacitors of the b-DPI2 106 within a defined time operating continuously. The b-DPI2 106 comprises of a diagnostic module that monitors the health of the PDU 3. On detecting a failure in the PDU 3, the b-DPI2 106 registers a failure in a suitable location such as an electrically erasable Programmable Read Only Memory. The b-DPI2 106 further initiates a defined set of reactions to ensure the system is in safe state.
[0091] The b-DPI2 106 is configured for operating within its defined safe operating limits and when it is driven to a state beyond these limits, the b-DPI2 106 is capable of driving itself to a safe state protecting itself from any possible damages without causing any safety violation at the system level.
[0092] The b-DPI2 106 comprises of control logics defined and stored in a non-volatile, electronic storage media as instructions for computing device stored thereon, for use with a vehicle, the instructions for computing device capable of being read by a computing device and being capable of instructing the computing device; and perform the operations as disclosed above.
[0093] The b-API2 107 can convert the DC power at voltage level 3 at upstream of b-DPI2 106 connected to downstream of the b-API2 107 into AC power of voltage level 3 at upstream of the b-API2 107. The b-API2 107 can convert the AC power at voltage level 3 available at upstream of the b-API2 107 into DC power of voltage level 3 at downstream of the b-API2 107 connected to upstream of the b-DPI2 106. The b-API2 107 can regulate AC power at voltage level 3 for the voltage level at upstream of b-API2 107 and combinations thereof.
[0094] The b-API2 107 can comprise of control logics defined and stored in a non-volatile, electronic storage media as instructions for computing device stored thereon, for use with a vehicle, the instructions for computing device capable of being read by a computing device and being capable of instructing the computing device; and perform the conversion and regulation as disclosed above.
[0095] The b-API2 107 can operate in the configurations as disclosed above, with capability to regulate the electrical output incorporating the temperature compensation, wherein the temperature compensation considers temperate at output terminals of the b-API2 107, input terminals of the interfacing devices which interface with the power output of the b-API2 107 and combinations thereof.
[0096] The b-API2 107 can comprise of control logics defined and stored in a non-volatile, electronic storage media as instructions for computing device stored thereon, for use with a vehicle, the instructions for computing device capable of being read by a computing device and being capable of instructing the computing device; and perform the temperature compensation as disclosed above.
[0097] The b-API2 107 can interface with the energy storage device 105/109. The b-API2 107 can convert the electrical energy stored as DC in the energy storage device 105 into AC power to perform at least one of powering on-board electrical power consumers (wherein the electrical consumers can be at least one of resistive in nature, inductive in nature, capacitive in nature or combinations thereof) operable to operate consuming AC power at voltage level 3 connected to upstream of the b-API2 107 when commanded by the control unit 202; powering external electrical power consumers operable to operate consuming AC power at voltage level 3 connected to upstream of b-API2 107 when commanded by the control unit 202; and combinations thereof.
[0098] The b-API2 107 can convert the AC power at voltage level 3 at upstream of the b-API2 107 into DC power at voltage level 3 at downstream of the b-API2 107 connected galvanically to upstream of b-DPI2 106 when commanded by the control unit 202 to perform at least one of powering on-board energy consumers operable to operate consuming DC power at voltage level 3 connected to downstream of b-API2 107; storing energy as DC power at voltage level 3 in the energy storage device 105/109 operable to operate at voltage level 3 connected to downstream of b-API2 107; storing energy as DC power at voltage level 3 in an external energy storage device operable to operate at voltage level 3 connected to downstream of b-API2 107; storing energy as DC power at voltage level 1 in the energy storage device 105/109 operable to operate at voltage level 1 connected to b-DPI2 106; storing energy as DC power at voltage level 1 in an external energy storage device operable at voltage level 1 connected to b-DPI2 106; powering on-board energy consumers operable to operate consuming DC power at voltage level 1 connected to downstream of b-DPI2 106; powering external consumers operable to operate consuming DC power at voltage level 1 connected to downstream of b-DPI2 106; storing energy as DC power at voltage level 2 in the energy storage device 105/109 operable to operate at voltage level 2 connected to downstream of the b-DPI1 108 through b-DPI2 106 and b-DPI1 108; storing energy as DC power at voltage level 2 in an external energy storage device operable to operate at voltage level 2 connected to downstream of the b-DPI1 108 through b-DPI2 106 and b-DPI1 108; powering on-board electrical consumers operable to operate consuming DC power at voltage level 2 connected to downstream of b-DPI1 108 through b-DPI2 106 and b-DPI1 108; powering external electrical consumers configured to operate on DC power at voltage level 2 connected to downstream of b-DPI1 108 through b-DPI2 106 and b-DPI1 108; powering engine 103 connected to downstream of the b-API1 104 through b-DPI2 106 and b-API1 104 and combinations thereof .
[0099] The b-API2 107 convert the DC power stored in the energy storage device 105/109 in to AC power connected to downstream of the b-DPI2 106 through b-DPI2 106 to perform at least one of powering on-board electrical power consumers operable to operate consuming AC power at voltage level 3 connected to upstream of the b-API2 107 when commanded by the control unit 202; powering external electrical power consumers operable to operate consuming AC power at voltage level 3 connected to upstream of b-API2 107 when commanded by the control unit 202; and combinations thereof.
[00100] The b-API2 107 can convert the AC power available at upstream of b-API2 107 at voltage level 3 in to DC power at voltage level 3 to power the engine 103 through b-DPI2 106 and b-API1 104 for the engine 103 to start the propulsion means of the vehicle. The b-API2 107 can convert the AC power available at upstream of b-API2 107 at voltage level 3 in to DC power at voltage level 3 to power the engine 103 through b-DPI2 106 and b-API1 104 for the engine 103 to provide drive the loads. The b-API2 107 can convert the AC power available at upstream of b-API2 107 at voltage level 3 in to DC power at voltage level 3 to power the engine 103 through b-DPI2 106 and b-API1 104 for the engine 103 to drive the loads and to provide traction power to the wheels of the vehicle through at least one of the main torque multiplication device or the torque vectoring device.
[00101] The b-API2 107 can interface with the b-DPI2 106. The b-API2 107 can interface with the b-DPI2 106 to feed power for at least one of powering on-board electrical loads operable to operate at voltage level 1 and connected to downstream of b-DPI2 106 through b-DPI2 106; powering off-board electrical loads operable to operate at voltage level 1 and connected to downstream of the b-DPI2 106, through b-DPI2 106; and combinations thereof. The b-API2 107 can interface with the b-DPI2 106 and power the engine 103 through b-DPI2 106 and b-API1 104 to start the propulsion means using the power available at upstream of the b-API2 107 as AC power at voltage level 3 converted to DC power at voltage level 3 upstream of b-DPI2 106 connected galvanically to downstream of b-API2 107, which is further converted to DC power at voltage level 1 at downstream of b-DPI1 108 connected galvanically to upstream of b-API1 104, which is further converted to AC power at voltage level 1 through b-API1 104 to feed the engine 103. The b-API2 107 can interface with the b-DPI2 106 and drive the accessories, when the engine 103 is connected to the propulsion means, using the power available upstream of b-API2 107 as AC power at voltage level 3 converted to DC power at voltage level 3 upstream of b-DPI2 106 connected galvanically to downstream of b-API2 107, which is further converted to DC power at voltage level 1 at downstream of b-DPI1 108 connected galvanically to upstream of b-API1 104, which is further converted to AC power at voltage level 1 through b-API1 104 to feed the engine 103. The b-API2 107 can interface with the b-DPI2 106 to feed the electrical consumers connected to upstream of b-API2 107 operable to operate consuming AC power at voltage level 3 drawing DC power at voltage level 2 available downstream of b-DPI1 108, converting it to DC power at voltage level 1 through b-DPI1 108, further converting it to DC power at voltage level 3 through b-DPI2 106 and further converting it to AC power at voltage level 3. DC power at voltage level 2 at downstream of b-DPI1 108 is from LV energy storage device 105/109 operating at voltage level 2 (or) an external LV energy storage device 105/109 operating at voltage level 2 connected to downstream of b-DPI1 108.
[00102] The b-API2 107 can comprise of galvanic isolation between the electrical circuits in the b-API2 107 and the electrical chassis of the vehicle. The b-API2 107 also comprises a means to monitor the status of exposure of conducting parts at the power interconnections which are accessible to users with/without use of any special tools. On detecting a failure, the b-API2 107 can register a failure in a suitable location such as an electrically erasable Programmable Read Only Memory. On registering a failure, the b-API2 107 can initiate a defined set of reactions to ensure the system is in safe state.
[00103] The b-API2 107 can detect violation in galvanic isolation, wherein the detection of violation in galvanic isolation includes violation between electrical chassis of the vehicle and at least one of positive charge carrier in DC power side of b-API2 107; negative charge carrier in DC-Power side of b-API2 107; U phase in the upstream of b-API2 107, V phase in upstream of b-API2 107, W phase in the upstream of b-API2 107, if b-API2 107 is built to operate providing 3 phase AC Output upstream of b-API2 107; phase in upstream of b-API2 107, neutral in the upstream of b-API2 107, if b-API2 107 is operable to provide single phase AC output upstream of b-API2 107; and combinations thereof. On detection of the violation in galvanic isolation the b-API2 107 validates the detection before confirming the status of violation in galvanic isolation. The b-API2 107 is communicate the detected violation to the control unit 202 after a defined de-bounce time and within a defined time threshold which is greater than the defined de-bounce time threshold. The b-API2 107 can validate the detection and initiate a set of actions to drive the system in to safe state.
[00104] The b-API2 107 comprises of an Active Discharge Unit (ADU) 4 which can discharge the charge stored in capacitors of the b-API2 107 within a defined time when commanded by the control unit 202, wherein the ADU 4 does not discharge the energy stored in capacitors when not commanded by the control unit 202. The b-API2 107 comprises of a diagnostic module that monitors the health of the ADU 4. On detecting a failure in the ADU 4, the b-API2 107 can register a failure in a suitable location such as an electrically erasable Programmable Read Only Memory. The b-API2 107 can then initiate a defined set of reactions to ensure the system is in safe state.
[00105] The b-API2 107 comprises of a Passive Discharge Unit (PDU) 4 that is operable to discharge the charge stored in capacitors of the b-API2 107 within a defined time operating continuously. The b-API2 107 comprises of a diagnostic module that monitors the health of PDU 4.On detecting a failure in the PDU 4, the b-API2 107 can register a failure in a suitable location such as an electrically erasable Programmable Read Only Memory. The b-API2 107 can then initiate a defined set of reactions to ensure the system is in safe state.
[00106] The b-API2 107 can operate within its defined safe operating limits and when it is driven to a state beyond these limits, the b-API2 107 can drive itself to a safe state protecting itself from any possible damages without causing any safety violation at the system level.
[00107] The b-API2 107 can be mounted onto at least one of engine compartment of the vehicle; chassis of the vehicle; passenger compartment of the vehicle; trunk of the vehicle and so on.
[00108] The b-API2 107 can comprise of control logics defined and stored in a non-volatile, electronic storage media as instructions for computing device stored thereon, for use with a vehicle, the instructions for computing device capable of being read by a computing device and being capable of instructing the computing device; and perform the operations as disclosed above.
[00109] The control unit 202 can be configured to interface with the b-API1 104, the b-API2 107, the b-DPI1 108, the b-DPI2 106 and the energy storage device 105/109.
[00110] The control unit 202 can interface with the b-API1 104 and co-ordinate power up by regulating the wake up and power up of the b-API1 104. The control unit 202 can interface with the b-API1 104 and co-ordinate power down by regulating the power down and shut down of b-API1 104. The control unit 202 can interface with b-API1 104 and command the b-API1 104 and the engine 103 to operate in one of the modes from the list comprising of converting DC power at voltage level 1 available at upstream of b-API1 104 to AC power at voltage level 1 downstream of b-API1 104; converting AC power at voltage level 1 available at downstream of b-API1 104 to DC power at voltage level upstream of b-API1 104; remaining in idle mode where neither DC power to AC power conversion nor AC power conversion to DC power conversion happen; operating with all switches downstream of b-API1 104 powering the three phases of engine 103 in open state; operating with all switches downstream of b-API1 104 powering the three phases of 103 short at b-API2 107 downstream; and combinations thereof. The control unit 202 can interface with b-API1 104 and command the b-API1 104 to convert the DC power at voltage level 1 available at upstream of the b-API1 104 in to AC power at voltage level 1 at downstream of the b-API1 104 to perform at least one of starting the propulsion means using the engine 103 if the engine 103 is connected to the propulsion means; driving loads, propelling the vehicle; and combinations thereof.
[00111] The control unit 202 can draw power from at least one of the energy storage device 105/109 connected galvanically to upstream of b-API1 104 operable to operate at voltage level 1; AC power available at upstream of b-API2 107 at voltage level 3 converted to DC power at voltage level 3 interfaced to upstream of b-DPI2 106 which is further converted to DC power at voltage level 1 through b-DPI2 106 which is further galvanically connected to upstream of b-API1 104; a LV energy storage device operable to operate at voltage level 2 connected galvanically to downstream of b-DPI1 108, further converting it to DC power at voltage level 1 at upstream of b-DPI1 108 which is galvanically connected to upstream of b-API1 104 and combinations thereof.
[00112] The control unit 202 can interface with b-API1 104 and instruct the b-API1 104 to convert the AC power at voltage level 1 available at downstream of b-API1 104 in to DC power at voltage level 1 at upstream of b-API1 104 to perform at least one of storing energy as DC power at voltage level 1 in the energy storage device 105/109; supplying on-board electrical consumers connected galvanically to upstream of b-API1 104 operable to operate at voltage level 1; supplying off-board electrical consumers connected galvanically to upstream of b-API1 104 operable to operate at voltage level 1; storing energy in an energy storage device connected galvanically to upstream of b-API1 104 operable to operate at voltage level 1; storing energy in an external energy storage device connected galvanically to upstream of b-API1 104 operable to operate at voltage level 1; storing energy in an on-board LV energy storage device operable to operate at voltage level 2 connected galvanically to downstream of b-DPI1 108; storing energy in an off-board LV energy storage device operable to operate at voltage level 2 connected galvanically to downstream of b-DPI1 108; supplying on-board electrical consumers connected galvanically to downstream of b-DPI1 108 operable to operate at voltage level 2; supplying off-board electrical consumers connected galvanically to downstream of b-DPI1 108 operable to operate at voltage level 2; storing energy in on-board energy storage device operable to operate at voltage level 3 connected galvanically to upstream of b-DPI2 106; storing energy in off-board external storage device operable to operate at voltage level 3 connected galvanically to downstream of b-DPI2 106; supplying on-board electrical consumers connected galvanically to upstream of b-DPI2 106 operable to operate at voltage level 3; supplying off-board electrical consumers connected galvanically to upstream of b-DPI2 106 operable to operate at voltage level 3; supplying on-board electrical energy consumers operable to operate consuming AC electrical power at voltage level 3 connected galvanically to b-API2 107; supplying off-board electrical energy consumers operable to operate consuming AC electrical power at voltage level 3 connected galvanically to b-API2 107; and combinations thereof. Power available at downstream of b-API1 104 as AC power at voltage level 1 can be from the energy generated by the engine 103 recovered from the kinetic energy of wheels or from the propulsion means if engine 103 is connected to the propulsion means.
[00113] The control unit 202 can interface with b-API1 104 and read the communication from b-API1 104 on detection of violation of galvanic isolation by b-API1 104. The control unit 202 can further command the b-API1 104 to enter a safe state post receipt of communication from b-API1 104 on detection of violation of galvanic isolation. The b-API1 104 can also post receipt of communication from b-API1 104 on the status of access to live conducting parts detected by b-API1 104. The control unit 202 can post receipt of communication from b-API1 104 on the status of errors detected by b-API1 104.
[00114] The control unit 202 can interface with b-API2 107 and co-ordinate power up by regulating the wake up and power up of b-API2 107. The control unit 202 can interface with b-API2 107 and co-ordinate power down by regulating the power down and shut down of b-API2 107. The control unit 202 can interface with b-API2 107 and command the b-API2 107 to operate in one of the modes comprising of converting DC power at voltage level 3 available at upstream of b-DPI2 106 which is galvanically connected to downstream of b-API2 107 to AC power at voltage level 3 upstream of b-API2 107; converting AC power at voltage level 3 available at upstream of b-API2 107 to DC power at voltage level 3 downstream of b-API2 107 which is connected galvanically to upstream of b-DPI2 106; remaining in idle mode where neither DC power to AC power conversion nor AC power conversion to DC power conversion happen; operating with switches for all three phases open upstream of b-API2 107 if b-API2 107 is operable to provide 3 phase output at upstream; operating with phase line open if b-API2 107 is operable to provide single phase output upstream; and combinations thereof. The control unit 202 can interface with b-API2 107 and command b-API2 107 to convert the DC power at voltage level 3 available at downstream of b-API2 107 in to AC power at voltage level 3 at upstream of b-API2 107 to perform at least one of powering on-board electrical consumers operable to operate consuming AC power at voltage level 3 connected galvanically to upstream of b-API2 107; powering external electrical consumers operable to operate consuming AC power at voltage level 3 connected galvanically to upstream of b-API2 107; and combinations thereof.
[00115] The control unit 202 can draw power for interfacing with the b-API2 107 from at least one of the energy storage device 105/109 through b-DPI2 106 whose downstream is galvanically connected to the energy storage device 105/109 operable to operate at voltage level 1 and upstream of b-DPI2 106 is further galvanically connected to downstream of b-API2 107 operable to operate at voltage level 3; LV energy storage device operable to operate at voltage level 2 connected galvanically to downstream of b-DPI1 108 whose upstream is connected galvanically to downstream b-DPI2 106 whose upstream is galvanically connected to downstream of b-API2 107 and operable to convert DC power at voltage level 1 to DC power at voltage level 3 at upstream of b-DPI Unit2; AC power available at downstream of b-API1 104 at voltage level 1 converted to DC power at voltage level 1 by b-API1 104 connected galvanically to downstream of b-DPI2 106, which is further converted to DC power at voltage level 3 through b-DPI2 106 wherein upstream of b-DPI2 106 is further galvanically connected to downstream of b-API2 107; and combinations thereof.
[00116] The control unit 202 can interface with the b-API2 107 and command b-API2 107 to convert the AC power at voltage level 3 available at upstream of b-API2 107 in to DC power at voltage level 3 at downstream of b-API2 107 to perform at least one of storing energy as DC power at voltage level 1 in the energy storage device 105/109 which is connected galvanically to downstream of b-DPI2 106 whose upstream is further galvanically connected to downstream of b-API2 107; supplying on-board electrical consumers connected galvanically to downstream of b-API2 107 operating at voltage level 3; supplying off-board electrical consumers connected galvanically to downstream of b-API2 107 operating at voltage level 3; store energy as DC power in on-board energy storage device at voltage level 3 connected galvanically to downstream of b-API2 107; storing energy as DC power in at least one off-board energy storage device at voltage level 3 connected galvanically to downstream of b-API2 107; supplying on-board electrical consumers connected galvanically to downstream of b-API2 107 operable to operate at voltage level 3; supplying off-board electrical consumers connected galvanically to downstream of b-API2 107 operable to operate at voltage level 3; supplying on-board electrical consumers operable to operate consuming DC power at voltage level 1 and connected galvanically to downstream of b-DPI2 106; storing energy as DC power at voltage level 2 in on-board LV energy storage device connected galvanically to downstream of b-DPI1 108 whose upstream is connected galvanically to downstream of b-DPI2 106 whose upstream is in turn connected galvanically to downstream of b-API2 107; storing energy as DC power at voltage level 2 in off-board LV energy storage device connected galvanically to downstream of b-DPI1 108 whose upstream is connected galvanically to downstream of b-DPI2 106 whose upstream is in turn connected galvanically to downstream of b-API2 107; supplying on-board electrical consumers connected galvanically to downstream of b-DPI1 108 and configured to operate consuming DC power at voltage level 2; supplying off-board electrical consumers connected galvanically to downstream of b-DPI1 108 and operable to operate consuming DC power at voltage level 2; supplying power to drive the engine 103 connected galvanically to downstream of b-API1 104 whose upstream is connected galvanically to downstream of b-DPI2 106 whose upstream is further galvanically connected to b-API2 107; and combinations thereof.
[00117] The control unit 202 can interface with b-API2 107 and read the communication from b-API2 107 on detection of violation of galvanic isolation by b-API1 104. The control unit 202 can then command the b-API2 107 to safe state on receipt of communication from b-API2 107.
[00118] The control unit 202 can interface with b-API2 107 and read the status communication from b-API2 107 on the state of live conducting parts of accessible connectors becoming accessible and command a safe state, on receipt of communication from b-API2 107 on the status of access to live conducting parts detected by b-API2 107.
[00119] The control unit 202 can interface with b-API2 107 and read the status communication from b-API2 107 on the state of errors being monitored in b-API2 107 and command a safe state, on receipt of communication from b-API2 107 on the status of errors detected by b-API2 107.
[00120] The control unit 202 can interface with b-DPI1 and co-ordinate power up by regulating the wake up and power up of b-DPI1 108. The control unit 202 can interface with b-DPI1 108 and co-ordinate power down by regulating the power down and shut down of b-DPI1 108.
[00121] The control unit 202 can interface with b-DPI1 108 and command the b-DPI1 108 to operate in at least one of the following modes: convert DC power at voltage level 1 available at upstream of b-DPI1 108 to DC power at voltage level 2 downstream of b-DPI1 108; convert DC power at voltage level 2 available at downstream of b-DPI1 108 to DC power at voltage level 1 upstream of b-DPI1 108; remain in idle mode where neither DC power at voltage level 1 to DC power at voltage level 2 conversion nor DC power at voltage level 2 conversion to DC power at voltage level 1 conversion happen; operate with all switches downstream of b-DPI Unit in open state; and combinations thereof.
[00122] The control unit 202 can interface with b-DPI1 108 and command b-DPI1 108 to convert the DC power at voltage level 1 available at upstream of b-DPI1 108 in to DC power at voltage level 2 at downstream of b-DPI1 108 to perform at least one of storing energy in on-board LV energy storage device operable to operate at voltage level 2 connected galvanically to downstream of b-DPI1 108; storing energy in off-board LV energy storage device(s) operable to operate at voltage level 2 connected galvanically to downstream of b-DPI1 108; supplying power to on-board electrical loads operable to consume DC power at voltage level 2 and connected galvanically to downstream b-DPI1 108; supplying power to off-board electrical loads operable to consume DC power at voltage level 2 and connected galvanically to downstream b-DPI1 108; and combinations thereof.
[00123] The control unit 202 can draw power required to interface with b-DPI1 108 from at least one of energy storage device 105/109 connected galvanically to upstream of b-DPI1 108 operable to operate at voltage level 1; AC power available at downstream of b-API1 104 at voltage level 1 converted to DC power at voltage level 1 interfaced to upstream of b-DPI1 108; AC power at voltage level 3 available at upstream of b-API2 107 converted to DC power at voltage level 3 at downstream of b-API2 107, which is further galvanically connected to b-DPI2 106 which further converts the DC power at voltage level 3 to DC power at voltage level 1 at downstream of b-DPI1 108 which is galvanically connected to upstream of b-DPI1 108; and combinations thereof.
[00124] The control unit 202 can interface with b-DPI1 108 and command b-DPI1 108 to convert the DC power at voltage level 2 available at downstream of b-DPI1 108 in to DC power at voltage level 1 at upstream of b-DPI1 108 to perform at least one of storing energy as DC power at voltage level 1 in on-board energy storage device wherein the energy storage device unit is connected galvanically to upstream of b-DPI1 108; storing energy as DC power at voltage level 1 in off-board energy storage device wherein the energy storage device unit is connected galvanically to upstream of b-DPI1 108; supplying on-board electrical consumers connected galvanically to upstream of b-DPI1 108 operable to operate at voltage level 1; supplying off-board electrical consumers connected galvanically to upstream of b-DPI1 108 operable to operate at voltage level 1; powering engine 103 through b-API1 104 to whose downstream engine 103 is galvanically connected, wherein b-API1 104 converts the DC power at voltage level 1 available at its upstream connected galvanically to upstream of b-DPI1 108 in to AC power at voltage level 1 in its downstream; powering on-board electrical energy consumers operable to consume DC power at voltage level 3 connected galvanically to upstream of b-DPI2 106; powering off-board electrical energy consumers operable to consume DC power at voltage level 3 connected galvanically to upstream of b-DPI2 106; storing energy in the energy storage device 105/109 as DC power at voltage level 3 connected galvanically to upstream b-DPI2 106; powering on-board energy consumers operable to consume AC power at voltage level 3 connected galvanically to upstream b-API2 107 through b-DPI2 106 and b-API2 107; powering off-board energy consumers operable to consume AC power at voltage level 3 connected galvanically to upstream of b-API2 107 through b-DPI2 106 and b-API2 107; and combinations thereof.
[00125] The control unit 202 can interface with b-DPI1 108 and read the communication from b-DPI1 108 on detection of violation of galvanic isolation by b-DPI1 108. The control unit 202 can further command the b-DPI1 108 to safe state, on receipt of communication from b-DPI1 108 on detection of violation of galvanic isolation.
[00126] The control unit 202 can interface with b-DPI1 108 and read the status communication from b-DPI1 108 on the state of live conducting parts of accessible connectors becoming accessible and command a safe state, on receipt of communication from b-DPI1 108 on the status of access to live conducting parts detected by b-DPI1 108.
[00127] The control unit 202 can interface with b-DPI1 and read the status communication from b-DPI1 108 on the state of errors being monitored in b-DPI1 108 and command a safe state, on receipt of communication from b-DPI1 108 on the status of errors detected by b-DPI1 108.
[00128] The control unit 202 can interface with b-DPI2 106 and co-ordinate power up by regulating the wake up and power up of b-DPI2 106. The control unit 202 can interface with b-DPI2 106 and co-ordinate power down by regulating the power down and shut down of b-DPI2 106.
[00129] The control unit 202 can interface with b-DPI2 106 and command the b-DPI2 106 to operate in at least one of the following modes: convert DC power at voltage level 1 available at downstream of b-DPI2 106 to DC power at voltage level 3 upstream of b-DPI2 106; convert DC power at voltage level 3 available at upstream of b-DPI2 106 to DC power at voltage level 1 downstream of b-DPI1 108; remain in idle mode where neither DC power at voltage level 1 to DC power at voltage level 3 conversion nor DC power at voltage level 3 conversion to DC power at voltage level 1 conversion happen; operate with all switches downstream of b-DPI2 106 in open state; and combinations thereof.
[00130] The control unit 202 can interface with b-DPI2 106 and command b-DPI2 106 to convert the DC power at voltage level 1 available at downstream of b-DPI1 108 into DC power at voltage level 3 at upstream of b-DPI2 106 to perform at least one of storing energy in an on-board energy storage device operable to operate at voltage level 3 connected galvanically to upstream of b-DPI2 106; storing energy in an off-board energy storage device operable to operate at voltage level 3 connected galvanically to upstream of b-DPI2 106; supplying power to on-board electrical loads operable to consume DC power at voltage level 3 and connected galvanically to upstream b-DPI2 106; supplying power to off-board electrical loads operable to consume DC power at voltage level 3 and connected galvanically to upstream b-DPI2 106; supplying power to on-board electrical loads operable to consume AC power at voltage level 3 and connected galvanically to upstream b-API2 107, where in the loads are powered by the b-API unit 2 using the DC power transferred by b-DPI2 106 whose upstream is connected galvanically to downstream of b-API2 107; supplying power to off-board electrical loads operable to consume AC power at voltage level 3 and connected galvanically to upstream b-API2 107 where in the loads are powered by the b-API2 107 using the DC power transferred by b-DPI2 106 whose upstream is connected galvanically to downstream of b-API2 107; and combinations thereof.
[00131] The control unit 202 can draw power for interfacing with the b-DPI2 106 from at least one of the energy storage device 105/109 operable to operate at voltage level and connected galvanically to downstream of b-DPI2 106; AC power available at downstream of b-API1 104 at voltage level 1 converted to DC power at voltage level 1 at upstream of b-API1 104 and interfaced to downstream of b-DPI2 106; DC power at voltage level 2 available at downstream of b-DPI1 108 converted to DC power at voltage level 1 at upstream of b-DPI1 108, which is further galvanically connected to downstream of b-DPI2 106; and combinations thereof.
[00132] The control unit 202 can interface with b-DPI2 106 and command b-DPI2 106 to convert the DC power at voltage level 1 available at downstream of b-DPI2 106 in to DC power at voltage level 3 at upstream of b-DPI2 106 to perform at least one of storing energy as DC power at voltage level 3 in an on-board energy storage device wherein the energy storage device is connected galvanically to downstream of b-DPI2 106; storing energy as DC power at voltage level 3 in an off-board energy storage device wherein the energy storage device is connected galvanically to upstream of b-DPI2 106; supplying on-board electrical consumers connected galvanically to upstream of b-DPI2 106 operable to operate at voltage level 3; supplying off-board electrical consumers connected galvanically to upstream of b-DPI2 106 operable to operate at voltage level 3; powering on-board electrical consumers operable to operate consuming AC power at voltage level 3 and connected galvanically to upstream of b-API2 107 wherein DPI Unit 2 as DC power at voltage level 3 and connected galvanically to downstream of b-API2 107 wherein the b-API2 107 converts the DC power at voltage level 3 at downstream to AC power at voltage level 3 at upstream; powering off-board electrical consumers operable to operate consuming AC power at voltage level 3 and connected galvanically to upstream of b-API2 107 wherein DPI2 106 as DC power at voltage level 3 and connected galvanically to downstream of b-API2 107 wherein the b-API2 107 converts the DC power at voltage level 3 at downstream to AC power at voltage level 3 at upstream; and combinations thereof.
[00133] The control unit 202 can interface with b-DPI2 and read the communication from b-DPI2 106 on detection of violation of galvanic isolation by b-DPI2 106. The control unit 202 can further command the b-DPI2 106 to safe state, on receipt of communication from b-DPI2 106 on detection of violation of galvanic isolation.
[00134] The control unit 202 can interface with b-DPI2 106 and read the status communication from b-DPI2 106 on the state of live conducting parts of accessible connectors becoming accessible and command a safe state, on receipt of communication from b-DPI2 106 on the status of access to live conducting parts detected by b-DPI2 106.
[00135] The control unit 202 can interface with b-DPI2 106 and read the status communication from b-DPI2 106 on the state of errors being monitored in b-DPI2 106 and command a safe state, on receipt of communication from b-DPI2 106 on the status of errors detected by b-DPI2 106.
[00136] The control unit 202 can interface with a powertrain control unit to define a certain operating range for the propulsion means so as to deliver the required power at required voltage level & required frequency at upstream of b-API2 107.
[00137] FIG. 3 depicts a method for generating electrical energy to be supplied to one or more components using the power supply unit, according to embodiments as disclosed herein. The electric engine 103, when in generator mode converts mechanical energy derived from the VPT 101 to electrical energy to be supplied to one or more electrical components of the vehicle and/or other external electrical components.
[00138] At step 301, the method 300 allows the engine 102 to convert mechanical energy derived from VPT 101 to the three phase AC power at the first three phase AC voltage level. At step 302, the method 300 allows the first b-API unit 104 to convert the first three phase AC voltage level to the first DC voltage level and store the DC power at first DC voltage level in the first energy storage device 105. At step 303, the method 300 allows the first b-DPI unit 108 to convert the first DC voltage level to the second DC voltage level and store the DC power at the second DC voltage level in the second energy storage device 109. At step 304, the method 300 allows the second b-DPI unit 106 to convert the first DC voltage level to the third DC voltage level. At step 305, the method 300 allows the second b-API unit 107 to convert the third DC voltage level to the first single phase AC voltage level and the second three phase AC voltage level. At step 306, the method 300 allows the second b-API unit 107 and the first b-DPI unit 108 to supply the DC power and/or AC power to one or more components of the vehicle as required and/or other external components.
[00139] The various actions in method 300 may be performed in the order presented, in a different order or simultaneously. Further, in some embodiments, some actions listed in FIG. 3 may be omitted.
[00140] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and/or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of preferred embodiments, those skilled in the art will recognize that the embodiments herein can be practiced with modification within the spirit and scope of the embodiments as described herein.

,CLAIMS:CLAIMS
What is claimed is:
1. A power supply unit, the power supply unit comprising:
an engine, wherein the engine is electrically connected to a first bi-directional AC Power Interface (b-API) unit and comprises a coupler assembly for mechanical coupling of the engine with a Vehicle Power Train (VPT) unit of a vehicle, wherein the engine is configured to function in accordance to an engine mode, wherein the engine mode comprises one of a generator mode and a motor mode;
the first b-API unit is electrically connected to a first energy storage unit;
the first energy storage device is electrically connected to a first bi-directional DC power Interface (b-DPI) unit and a second b-DPI unit;
the first b-DPI unit is electrically connected to a second energy storage device; and
the second b-DPI unit is electrically connected to a second b-API unit.
2. The power supply unit as claimed in claim 1, wherein the first b-API unit, the second b-API unit, the first b-DPI unit, the second b-DPI unit, the first storage device and the second storage device are configured to function in accordance to control signals from a central control unit, wherein the central control unit is configured to generate the control signals in accordance to at least one parameter fetched from a vehicle controller and said engine mode, wherein the at least one parameter provides current state of the vehicle and current power requirement of at least one electrical component of the vehicle.
3. The power supply unit as claimed in claim 1, wherein the first b-API unit, the second b-API unit, the first b-DPI unit and the second b-DPI unit are configured to provide self-protection against over temperature, over current and over voltage.
4. The power supply unit as claimed in claim 1, wherein the engine, set to the generator mode by the first b-API, is configured to generate a three phase AC power at a first three phase AC voltage level by converting mechanical power derived from the VPT unit when coupled to the VPT unit.
5. The power supply unit as claimed in claim 4, wherein the first b-API unit is configured to convert the first three phase AC voltage level generated by the engine to a DC power at a first DC voltage level, wherein the first energy storage device is configured to store the DC power at the first DC voltage level.
6. The power supply unit as claimed in claim 5, wherein the first b-DPI unit is configured to convert DC power stored by the first energy storage device at the first DC voltage level to the DC power at a second DC voltage level, wherein the second energy storage device is configured to store the DC power at the second DC voltage level.
7. The power supply unit as claimed in claim 5, wherein the second b-DPI unit is configured to convert DC power stored by the first energy storage device at the first DC voltage level to the DC power at a third DC voltage level and provide the DC power at the third DC voltage level to the second b-API unit.
8. The power supply unit as claimed in claim 7, wherein the second b-API unit is configured to generate a single phase AC power at a first single phase AC voltage level and the three phase AC power at a second three phase AC voltage level.
9. The power supply unit as claimed in claim 1, wherein the engine, when set to the motor mode by the first b-API, is configured to supply mechanical power to the VPT by deriving the mechanical power from a three phase AC power provided by the first b-API unit, wherein the first b-API unit is configured to generate the three phase AC power at a first three phase AC voltage level from a DC power at a first DC voltage level, wherein the DC power at the first DC voltage level is provided by the first energy storage device.
10. The power supply unit as claimed in claim 9, wherein the first b-DPI unit is configured to charge the first energy storage device to first DC voltage level from one of the DC power obtained from the second energy storage device storing the DC power at a second DC voltage level and DC power obtained from the second b-API unit after converting one of AC power from the first single phase AC voltage and second three phase AC voltage to DC power.