TECHNICAL FIELD
The present disclosure relates to a power conditioning unit (PCU), and more
specifically, to a power conditioning unit (PCU) (also interchangeably hereinafter referred to as "solar power conditioning unit", "SPCU" hereinafter) with high power startup profile delivering multiple times of rated power for few seconds to start any typical load which demands high starting current.
BACKGROUND
Background description includes information that may be useful in
understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
The term renewable energy system (or collector) means different renewable
energy transforming systems, such as the thermal solar panel, which uses the sun's energy to
heat water or another fluid usually to heat the house or the house water, the photovoltaic solar
panel that uses solar cells to convert the sun's energy (electromagnetic radiation) into
electricity, thanks to the photovoltaic effect, the hybrid solar panel, according to which a
thermal solar panel is coupled with a solar photovoltaic panel, and the thermodynamic solar
system, which is a technology adapted to utilize solar energy for heating a fluid and to
accumulate energy for moving a turbine and for generating electrical energy.
With increase in power demand globally the conventional energy resources are
not able to meet the consumption requirements and there is a huge gap between energy production and demand. Therefore technology is moving towards non-conventional and/or renewable energy sources like solar energy, wind energy, geothermal energy, wave energy etc. Out of all these resources solar energy is found in abundance and now technology has grown to convert the solar energy into electrical energy very easily with the help of solar panel. One such technology developed is a photovoltaic (PV) system that converts the solar energy into electrical energy.
The photovoltaic system is electricity generating solar PV power system that
may transfer power to the utility grid. Normally, the PV system consists of solar panels, one or several inverters and a power conditioning unit (PCU). They range from small residential and commercial rooftop systems to large utility-scale solar power stations. The PCU is an

integrated system consisting of a solar power controller, inverter with grid interface. The PCU also provides the facility to charge a battery bank through either a solar or grid which can be utility grid or local power source like DG set.
Also, the currently available PCU's do not provide multiple power interfaces
for grid, solar and battery (internal and / or external) or super-capacitor to deliver high power
profile as per type and demand of a load (such as but not limited to induction motor based
load). Most importantly, the currently available PCU do not regulate and/or automatically
maintain a constant AC voltage output irrespective of the AC voltage on the grid. Therefore, there exists a dire need to provide an efficient, effective and an
improved PCU with high power startup profile that delivers multiple times of rated power for few seconds to start any typical load which demands high starting current. Further, there is also a need to provide a PCU for AC mains that regulates and automatically maintains a constant mains AC voltage. Furthermore, there is also a need of a PCU having multiple power interfaces for grid, solar and battery (internal and / or external) or super-capacitor to deliver high power profile as per type and demand of a load (such as but not limited to induction motor based load).
As used in the description herein and throughout the claims that follow, the
meaning of "a," "an," and "the" includes plural reference unless the context clearly dictates otherwise. Also, as used in the description herein, the meaning of "in" includes "in" and "on" unless the context clearly dictates otherwise.
In some embodiments, the numerical parameters set forth in the written
description and attached claims are approximations that can vary depending upon the desired properties sought to be obtained by a particular embodiment. In some embodiments, the numerical parameters should be construed in light of the number of reported significant digits and by applying ordinary rounding techniques. Notwithstanding that the numerical ranges and parameters setting forth the broad scope of some embodiments of the invention are approximations, the numerical values set forth in the specific examples are reported as precisely as practicable. The numerical values presented in some embodiments of the invention may contain certain errors necessarily resulting from the standard deviation found in their respective testing measurements.
The recitation of ranges of values herein is merely intended to serve as a
shorthand method of referring individually to each separate value falling within the range. Unless otherwise indicated herein, each individual value is incorporated into the specification as if it were individually recited herein. All methods described herein can be performed in

any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. The use of any and all examples, or exemplary language (e.g. "such as") provided with respect to certain embodiments herein is intended merely to better illuminate the invention and does not pose a limitation on the scope of the invention otherwise claimed. No language in the specification should be construed as indicating any non-claimed element essential to the practice of the invention.
Groupings of alternative elements or embodiments of the invention disclosed
herein are not to be construed as limitations. Each group member can be referred to and claimed individually or in any combination with other members of the group or other elements found herein. One or more members of a group can be included in, or deleted from, a group for reasons of convenience and/or patentability. When any such inclusion or deletion occurs, the specification is herein deemed to contain the group as modified thus fulfilling the written description of all groups used in the appended claims.
OBJECTS OF THE INVENTION
It is a general object of the present disclosure to provide a hybrid power
conditioning unit (PCU) with high power startup profile to deliver multiple times of rated
power for few seconds to start any typical load which demands high starting current.
It is another object of the present disclosure to provide a renewable energy
hybrid PCU having multiple power sources such as grid, renewable energy like solar and
battery.
It is another object of the present disclosure to provide a PCU to deliver
startup power profile as per type and demand of load like induction motor based load by
delivering multiple times power for multiple seconds.
It is still another object of the present disclosure to provide a light-weight AC
voltage regulator in case of power from Grid.
SUMMARY
The present disclosure relates to a unique hybrid power conditioning unit
(PCU) with high power Startup profile. This PCU also acts as a static voltage regulator and grid tie inverter. PCU's unique feature is to deliver multiple times of rated power for few seconds to start any typical load which demands high starting current like Induction Motor based application. As an advantage the system facilitates to reduce installation space and cost of the renewable energy source like solar panel.

Embodiments of the present disclosure relates to a power conditioning unit
(PCU) to generate a boosted power that is multiple times of a rated power associated with a load. The PCU includes at least one input and a controller unit. At least one input receives an input power from at least one power source. The controller unit coupled with the at least one input and control a plurality of power legs based at least on one or more properties of the received input power to generate the boosted power that is multiple times of the rated power for startup associated with the load using battery (internal and / or external) or super-capacitor.
In an aspect, the load is an induction motor based device or a device that
demands high starting current.
In an aspect, the PCU is a hybrid PCU with a high startup power profile.
In an aspect, at least one power source is selected from any or a combination
of an electric grid, a renewable energy power source, and a battery.
In an aspect, the PCU is configured to operate as a device selected from any or
a combination of an inverter, grid tie inverter, and a static voltage regulator.
In an aspect, the plurality of power legs includes a first power leg, a second
power leg and a third power leg. The first power leg adapted to operate as a line-in to form a DC-bus. The first power leg is electrically coupled to a LC filter to operate to boost a power factor correction (PFC) during a power draw and operate as a grid tie inverter (GTI) during power feed to the grid. The second power leg adapted to operate as a line-out. The second power leg is electrically coupled to a filter to operate at a fixed frequency pulse width modulation (PWM) and a folded sine modulating signal to generate a regulated voltage. The third power leg adapted to operate as a neutral. The third power leg is synchronized with a line frequency to enable neutral level switching.
In an aspect, the controller unit senses one or more properties of an incoming
signal at the first power leg and a feedback signal from the third power leg, and generates
said modulation and said folded sine modulation at the second power leg to generate the
power that is multiple times of the rated power associated with the load. In an aspect, the plurality of power legs includes a fourth power leg adapted to
operate as a boost converter with maximum power point tracking (MPPT). In an aspect, the plurality of power legs includes a fifth power leg, a sixth
power leg and a seventh power leg. The fifth power leg and a sixth power leg are adapted to operate as boost converters with phase shift operation to reduce ripples. The seventh power leg is adapted to operate as a buck converter for a battery charger from common DC-bus.

In an aspect, the controller unit is selected from any or a combination of a
microcontroller unit (MCU) or digital signal processor (DSP).
An aspect of the present disclosure relates to a method for generating a
boosted power that is multiple times of a rated power associated with a load. The method includes the following steps: an at least one input of a power conditioning unit (PCU) receives an input power from at least one power source, wherein the at least one power source is selected from any or a combination of an electric grid, a renewable energy power source, and a battery and a controller unit of the PCU controls a plurality of power legs for generating the boosted power that is multiple times of the rated power associated with the load using battery (internal and / or external) or super capacitor. .
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings are included to provide a further understanding
of the present disclosure, and are incorporated in and constitute a part of this specification.
The drawings illustrate exemplary embodiments of the present disclosure and, together with
the description, serve to explain the principles of the present disclosure.
In the figures, similar components and/or features may have the same
reference label. Further, various components of the same type may be distinguished by
following the reference label with a second label that distinguishes among the similar
components. If only the first reference label is used in the specification, the description is
applicable to any one of the similar components having the same first reference label
irrespective of the second reference label.
FIG. 1 illustrates exemplary block diagram of hybrid power conditioning unit
(PCU), in accordance with an exemplary embodiment of the present disclosure.
FIGs. 2A-B illustrates an exemplary isometric view of proposed hybrid power
conditioning unit (PCU), in accordance with an exemplary embodiment of the present
disclosure.
FIG. 3A-B illustrates an exemplary pictorial view of hybrid power
conditioning unit (PCU), in accordance with an exemplary embodiment of the present
disclosure.
FIG. 4 illustrates an exemplary simplified power stage having 7 power legs of
hybrid power conditioning unit (PCU), in accordance with an exemplary embodiment of the
present disclosure.

FIGs. 5A-B illustrates exemplary captured waveforms of hybrid power
conditioning unit (PCU), in accordance with an exemplary embodiment of the present
disclosure.
FIG. 6 illustrates an exemplary waveform of a typical startup profile
execution, in accordance with an exemplary embodiment of the present disclosure.
FIG. 7 illustrates exemplary simplified block diagram in accordance with an
exemplary embodiment of the present disclosure.
FIG. 8 illustrates exemplary flow diagram, in accordance with an exemplary
embodiment of the present disclosure.
FIG. 9 illustrates additional exemplary flow diagram, in accordance with an
exemplary embodiment of the present disclosure.
DETAILED DESCRIPTION
Embodiments of the present disclosure include various steps, which will be
described below. The steps may be performed by hardware components or may be embodied in machine-executable instructions, which may be used to cause a general-purpose or special-purpose processor programmed with the instructions to perform the steps. Alternatively, steps may be performed by a combination of hardware, software, and firmware or by human operators.
If the specification states a component or feature "may", "can", "could", or
"might" be included or have a characteristic, that particular component or feature is not required to be included or have the characteristic.
Exemplary embodiments will now be described more fully hereinafter with
reference to the accompanying drawings, in which exemplary embodiments are shown. This
disclosure may, however, be embodied in many different forms and should not be construed
as limited to the embodiments set forth herein. These embodiments are provided so that this
disclosure will be thorough and complete and will fully convey the scope of the disclosure to
those of ordinary skill in the art. Moreover, all statements herein reciting embodiments of the
disclosure, as well as specific examples thereof, are intended to encompass both structural
and functional equivalents thereof. Additionally, it is intended that such equivalents include
both currently known equivalents as well as equivalents developed in the future (i.e., any
elements developed that perform the same function, regardless of structure).
Thus, for example, it will be appreciated by those of ordinary skill in the art
that the diagrams, schematics, illustrations, and the like represent conceptual views or

processes illustrating systems and methods embodying this disclosure. The functions of the
various elements shown in the figures may be provided through the use of dedicated
hardware as well as hardware capable of executing associated software. Similarly, any
electronic code generator shown in the figures are conceptual only. Their function may be
carried out through the operation of program logic, through dedicated logic, through the
interaction of program control and dedicated logic, or even manually, the particular technique
being selectable by the entity implementing this disclosure. Those of ordinary skill in the art
further understand that the exemplary hardware, software, processes, methods, and/or
operating systems described herein are for illustrative purposes and, thus, are not intended to
be limited to any particular named.
Various terms as used herein are shown below. To the extent a term used in a
claim is not defined below, it should be given the broadest definition persons in the pertinent
art have given that term as reflected in printed publications and issued patents at the time of
filing.
Although the present disclosure has been described with the purpose of
implementing static voltage regulator, it should be appreciated that the same has been done
merely to illustrate the invention in an exemplary manner and any other purpose or function
for which the explained structure or configuration can be used, is covered within the scope of
the present disclosure.
Considering a real-time example to understand the technical problem and the
need of the present invention, it may be appreciated by the person skilled in the art that for a
1 KW (mechanical output power) induction motor based application like small submersible
pump, 1 Ton Air conditioner etc., requires a 5KVA PCU with 5 KW solar panels which are
expensive, bulky and not optimized, as continuous power consumption is below 1.2 KW
while peak power for starting is almost 4 KW. However a 1.5KVA PCU with 1.5KW solar
panel is unable to start such load as solar or other renewable power source cannot be
overloaded.
Generally, a static regulator is a replacement of servo stabilizer which
consists of a high frequency converter and a low frequency (50 or 60 Hz) series transformer
to regulate the output AC voltage, making the static regulator lighter compared to normal
servo stabilizer due to replacement of AC variable transformer (variac) by solid state
converter.
Therefore, there is need of an optimized solution of required continuous power
with high power startup profile. As an example, solution for 1 KW (mechanical output

power) induction motor based application is discussed. As its continuous input electrical power is 1.2 KW approx. with 3 times starting power for typical 1 second, the present invention explains as an example 1.3 KW continuous power and 4 KW peak power for 2 second as Startup power profile. However, the proposed invention is not limited to these numbers. It can be (m) KW continuous power with (m x n) KW startup power profile for (T) seconds.
The solar panel or other renewable energy source cannot be overloaded.
Therefore, this peak power of 4 KW is derived from internal alternate power source, which can be small batteries or super-capacitor. Two options are available for batteries. It can be small capacity startup power profile battery of 12V 7 AH x 6 = 72V 7AH sealed batteries placed internally in the PCU or it can be higher rating say 12V 100 AH x 4 = 48V 100 AH or more placed externally with the PCU which can deliver 4KW for 2 second and continuous 1.3 KW to run the application in night without solar power or it can be combination of both internal and external batteries as outlined above.
The present disclosure relates to a unique hybrid power conditioning unit
(PCU) with high power startup profile. It also acts as a static voltage regulator and grid tie
inverter. Its unique feature is to deliver multiple times of rated power for few seconds to start
any typical load which demands high starting current like induction motor based application. The present disclosure relates to a hybrid power conditioning unit (PCU) with
high power startup profile. The proposed PCU acts as a static voltage regulator and grid tie inverter. The proposed PCU has unique feature to deliver multiple times of rated power for few seconds to start any typical load which demands high starting current like induction motor based application.
The present disclosure explain that a 1 KW induction motor based application
like small submersible pump, 1 Ton air conditioner etc. can run on the hybrid PCU with high power startup profile capability.
Embodiments of the present disclosure generally relate to a static voltage
regulator to regulate the mains AC voltage. In an aspect of the present disclosure,Three Phase Bridge and three LC (inductor-capacitor) filters can be configured to implement the proposed static regulator.
Different embodiments of the present disclosure provide a unique hybrid PCU
with startup power profile. As an example, a 1 KW mechanical output power induction motor based application is considered. Therefore, 1.3 KW continuous electrical input powers and 4

KW peak power for 2 second is explained in this design only for explanation and not limiting
the invention.
Embodiments of the present disclosure provide an efficient, effective, reliable,
improved a hybrid power conditioning unit (PCU) with high power startup profile for
delivering multiple times of rated power for few seconds to start any typical load which
demands high starting current. The PCU acts as a grid tie inverter. The PCU acts as a static
voltage regulator cum stabilizer for AC mains that can regulate and automatically maintain a
constant mains AC voltage. The PCU includes seven power legs.
In an aspect, three power legs are used to meet the function of static voltage
regulator and grid tie inverter. Neutral switching is synchronized with line frequency 50 Hz
or 60 Hz to reduce losses.
In an aspect, power leg of line-in with LC filter network acts as power factor
correction (PFC) boost during power draw and also acts as grid tie inverter during power
feed.
In an aspect, line-out power leg with LC filter operates at high frequency pulse
with modulation (PWM) and folded sine modulating signal.
In an aspect, three legs are designed to handle multiple (typical 3) times
overloads for multiple (typical 2) second which is essential requirement to start loads
demanding high starting power such as single phase induction motor based application.
In an aspect, 4* power leg is used as a boost converter with Maximum Power
Point Tracking (MPPT). It may be appreciated that solar power is used as an example. Any
renewable power can be used like wind energy etc.
In an aspect, 5* and 6X power legs are used as boost converter-1 and boost
converter-2 with phase shift operation to reduce ripples. This section is designed to deliver 3
times power for 2 seconds from low voltage battery to high voltage DC bus. As an example,
72V internal batteries can be used to deliver 4 KW at 350V DC bus. This 350V DC bus is
required to generate 225 V AC power.
In an aspect, lx power leg is used as a buck converter for battery charger from
DC bus which can have power from solar or from grid.
In an aspect, a microcontroller unit (MCU) with embedded software
individually implements neutral level switching on third leg, line-in up-converter with power
factor correction (PFC) on first leg to feed power to DC bus, and Line-out mains generation
with regulated voltage on second leg.

In an aspect, the micro-controller unit (MCU) or digital signal processor
(DSP) senses properties of incoming mains signal at the line-in and feedback signal from
neutral, and generate all required modulations.
In an aspect, the micro-controller unit (MCU) senses solar panel voltage,
current, battery voltage etc. The MCU is used to control multiple loops for AC generation at
line out, power draw with PFC or power feed at line-In as grid tie inverter. Other controls
loops are solar boost MPPT, battery boost-1 and boost-2, and battery charger.
FIG. 1 illustrates exemplary block diagram of hybrid power conditioning unit
(PCU), in accordance with an exemplary embodiment of the present disclosure.
In an embodiment, the hybrid power conditioning unit (PCU) 100 can include
a grid interface 102, AC line-out load 108 and 3 power legs such as 110-1, 110-2 and 110-3
to complete AC interface. The hybrid power conditioning unit (PCU) 100 also illustrates
solar boost and Maximum Power Point Tracking (MPPT) 104 to feed solar power to DC bus.
In another embodiment, a battery interface 106 can include 2 parallel stage
boost converter and one stage buck converter battery charger.
In another embodiment, additional interfaces 114 can include MCU 114-1,
Isolated communication 114-3, optional WiFi 114-2, control SMPS 114-4 etc.
In another embodiment, first leg 110-1, second leg 110-2, and third leg 110-3
of the power stage can be connected to line-in 112-1, line-out 112-2, and neutral 112-3 with
LC filters. Four to seven power legs 110-4, 110-5, 110-6 and 110-7 can be used for solar
boost and MPPT, battery boost-1, battery boost-2 and battery charger.
In another embodiment, a grid protection relay can be used to disconnect from
grid in case of grid low voltage, grid high voltage, or grid fail.
FIG. 2A illustrates an exemplary isometric view of proposed hybrid power
conditioning unit (PCU) 100, in accordance with an exemplary embodiment of the present
disclosure.
FIG. 2B illustrates an exemplary isometric view of battery box 200 for
proposed internal batteries of hybrid power conditioning unit (PCU), in accordance with an
exemplary embodiment of the present disclosure.
In another embodiment, the PCU capacity is 1.3 KW continuous powers and 4
KW peak power for 2 second as an example. PCU box dimensions is 400 mm x 300 mm x
130 mm and its weight below 12 Kg which is far below present solution of 5 KVA PCU.

FIG. 3A-B illustrates an exemplary pictorial view of hybrid power
conditioning unit (PCU) 100, in accordance with an exemplary embodiment of the present disclosure.
In another embodiment, the PCU can include air core toridal inductors 302
which handle 4 KW peak power and does not saturate at any amount of overload. Other ferrite core based inductors can be bulky and too much oversized which will affect size, weight, cost and would have risk of saturation.
In an embodiment, as shown in Fig. 3B are a set of internal batteries as
included in the PCU.
FIG. 4 illustrates an exemplary simplified power stage having 7 power legs of
hybrid power conditioning unit (PCU), in accordance with an exemplary embodiment of the present disclosure.
FIG. 4 illustrates an exemplary simplified power stage having 7 power legs
100 of the present disclosure. 402 indicates Power leg-1 110-1, leg-2 110-2 and leg-3 110-3 can be used for Line-in, Line-out and neutral. Therefore, these are complete bridge legs with low and high switch. It should be appreciated that IGBTs are shown only for explanation. However, MOSFET or IGBT or mix in different legs can be used.
In another embodiment, 402 can indicate 4 power legs such as 110-1, 110-2,
110-3 and 110-4 which is essential for any solar PCU. 406 can indicate 3 power legs 110-5,
110-6 and 110-7 can be used to handle battery for high power startup profile and charging.
In another embodiment, 3 power legs (indicated by) 402 i.e., a first, a second,
and a third leg 110-1, 110-2 and 110-3 of the power stage can be connected to Line-In, Line-
Out, and Neutral with LC filters for complete interface to Grid and AC load. In another embodiment, a power leg-4 110-4 at 404 can be used for solar boost
and MPPT. Therefore, it requires IGBT on low side and diode on high side. In another embodiment, a power leg-5 110-5 and power leg-6 110-6 for the
battery boost 406 with phase shift can reduce ripples. It also requires IGBT / MOSFET on lo side and diode on high side. Here boost ratio is high from 48V or 72V battery to 350V DC bus which requires higher duty cycle on power device. Therefore, two devices can be used in parallel to handle peak power of 4 KW from 2 stages for 2 seconds. Time greater than 100 milliseconds is considered like continuous power for the power device and necessary safety margin is obtained by paralleling 2 devices in these power legs.

In another embodiment, four to seven power legs 110-4, 110-5, 110-6 and
110-7 can be used for solar boost and MPPT, battery boost-1, battery boost-2 and battery
charger.
In another embodiment, the present invention individually implements
switching of seven power legs 110-1, 110-2, 110-3, 110-4, 110-5, 110-6 and 110-7.
In present disclosure, solar power can be first transferred to line out as per
demand and remaining power if any is distributed for battery charging and transfer to line-in
as a grid tie inverter.
FIGs. 5A-B illustrates exemplary captured waveforms of hybrid power
conditioning unit (PCU), in accordance with an exemplary embodiment of the present
disclosure.
FIG. 5A illustrates Line-in 504 as boost with PFC for power draw from grid,
neutral 502 at approx. 50 Hz square wave, line-Out 506 is using folded modulation.
FIG. 5B illustrates neutral 510 at approx. 50 Hz square wave, line-out 508 as
folded modulation. FIG. 5B illustrates math function 512 as difference of two waveforms
which is actual line-out w.r.t. neutral.
FIG. 6 illustrates an exemplary waveform of a typical startup profile
execution, in accordance with an exemplary embodiment of the present disclosure.
In an embodiment, an exemplary waveform of the startup profile execution is
illustrated. As can be appreciated by one skilled in the art, the waveform depicts that current
can be increased upto multiple times of the input as per the demand. As illustrated in FIG. 6,
nominal load current 602 is increased multiple times 604 as per demand of load which is also
indicated by dip 608 and recovered within short time. The high demand load is changed to
normal load and current 606 is again normal.
FIG. 7 illustrates exemplary simplified block diagram in accordance with an
exemplary embodiment of the present disclosure.
FIG. 7 illustrates multiple power or energy sources mains or Grid 702, solar
panel 704 and battery 706. First priority is assigned to load 708. If excess power from solar
panel 704, then it is utilized in battery charging and then feed to Grid as Grid Tie Inverter
function. Other blocks or units are Grid Interface 710 for EMI filters, Grid Protect 712 for
safety, battery interface 714 and control 716. Power leg 1 to 7are already explained in Fig 1,
so not repeated here.
FIG. 8 illustrates exemplary flow diagram, in accordance with an exemplary
embodiment of the present disclosure.

In an embodiment, at block 802 a check for availability of multiple power
sources is done. If any or all power sources are present, a common DC bus (HTP) is built at 804 along with syncing with grid. At block 806 a state of the DC bus is determined. If the state of the DC bus is acceptable, then at block 808 an inverter is started and battery health is checked for it's capability to run startup profile. At block 810, it is determined that the whether the battery is less than 90% charged, and if the battery is below 50% charged then instructions are given to charge the battery at block 812 before proceeding further. At 814, the load current is watched in fast loop, and at block 816 if it is determined that the load demand is high then at block 818, the charging for the battery is disabled , and boost power is started as per startup demand (i.e. 'm' times for 'n' second). At block 820, the boost power is disabled after 'n' seconds. Further, at block 822, the battery charging is enabled, and at block 824, a check for overload is performed. At block 826, the load current is checked, and when the load current is greater than the continuous running capability of the PCU, the hardware is tripped. At block 828, a delay is introduced, re-start is performed, and the device is never stopped subject to 802 being met.
In an additional embodiment, if at 802 only Grid is present, the system acts as
Static Voltage Regulator till battery is charged and start-up capability is regained. If Solar is present and Battery is fully charged and load is less, power is fed back to Grid making it Grid Tie Inverter. If Solar and Grid are not present and system has external battery, the system acts as a normal inverter with the capability to have a start-up (boost power) profile. If only Solar is present with internal battery below 50%, battery is first charged to regain start-up capability and then the PCU functions normally.
FIG. 9 illustrates an additional exemplary flow diagram, in accordance with an
exemplary embodiment of the present disclosure.
In an embodiment at block 902, receiving at least one input of a power
conditioning unit (PCU) (100), an input power from at least one power source, wherein the at least one power source is selected from any or a combination of an electric grid, a renewable energy power source, and a battery. At block 904, controlling 904, at a controller unit of the PCU, a plurality of power legs for generating the boosted power that is multiple times of the rated power associated with the load based at least on one or more properties of the received input power, wherein the plurality of power legs having: at block 906 a first power leg (110-1) adapted to operate as a line-in (112-1) to form a DC-bus, wherein the first power leg is electrically coupled to a resonant circuit LC filter to operate to boost a power factor correction (PFC) during a power draw and operate as a grid tie inverter during power feed to

the GRID; at block 908 a second power leg (110-2) adapted to operate as a line-out (112-2),
wherein the second power leg is electrically coupled to a filter to operate at a frequency
modulation PWM and a folded sine modulation to generate a regulated voltage; and at block
910 a third power leg (110-3) adapted to operate as a neutral (112-3), wherein the third power
leg is synchronized with a line frequency to enable neutral level switching. It may be appreciated that, boost converter (step-up converter) is a DC-to-DC
power converter that steps up voltage (while stepping down current) from its input (supply) to its output (load). It is a class of switched-mode power supply (SMPS) containing at least two semiconductors (a diode and a transistor) and at least one energy storage element: a capacitor, inductor, or the two in combination. To reduce voltage ripple, filters made of capacitors (sometimes in combination with inductors) are normally added to such a converter's output (load-side filter) and input (supply-side filter).
Further it may be appreciated that, the buck converter (step-down converter) is
a DC-to-DC power converter which steps down voltage from its input (supply) to its output
(load). It is a class of switched-mode power supply (SMPS) typically containing at least two
semiconductors (a diode and a transistor, although modern buck converters frequently replace
the diode with a second transistor used for synchronous rectification) and at least one energy
storage element, a capacitor, inductor, or the two in combination. To reduce voltage ripple,
filters made of capacitors (sometimes in combination with inductors) are normally added to
such a converter's output (load-side filter) and input (supply-side filter). Finally, it is also clear that many variations may be made to the PCU of the
invention, without departing from the principles of novelty inherent in the inventive idea, as well as it is clear that, in the practical embodiment of the invention, the materials, shapes and dimensions of the illustrated details may be any according to the requirements and said details may be replaced with other technically equivalent.
In this respect, before explaining at least one embodiment of the invention in
detail, it is to be understood that the invention is not limited in its application to the details of construction and to the arrangements of the components set forth in the following description or illustrated in the drawings. The invention is capable of other embodiments and of being practiced and carried out in various ways. Also, it is to be understood that the phraseology and terminology employed herein are for the purpose of description and should not be regarded as limiting. These together with other objects of the invention, along with the various features of novelty which characterize the invention, are pointed out with particularity in the disclosure. For a better understanding of the invention, its operating

advantages and the specific objects attained by its uses, reference should be had to the accompanying drawings and descriptive matter in which there are illustrated preferred embodiments of the invention.
While the preferred embodiment of the invention has been set forth for the
purpose of disclosure, modifications of the disclosed embodiment of the invention as well as other embodiments thereof may occur to those skilled in the art. Accordingly, the appended claims are intended to cover all embodiments, which do not depart from the spirit and scope of the invention.
The foregoing object, features and advantages will be able to easily carry out
self-technical features of the present invention one of ordinary skill in the art are described later in detail with reference to the accompanying drawings, accordingly. If the detailed description of the known art related to the invention In the following description of the present invention that are determined to unnecessarily obscure the subject matter of the present invention, and detailed description thereof will not be given. It will be described in the following, a preferred embodiment according to the present invention with reference to the accompanying drawings, for example, in detail. Like reference numerals in the drawings it is used to refer to same or similar elements.
It should be apparent to those skilled in the art that many more modifications
besides those already described are possible without departing from the inventive concepts herein. The inventive subject matter, therefore, is not to be restricted except in the spirit of the appended claims. Moreover, in interpreting both the specification and the claims, all terms should be interpreted in the broadest possible manner consistent with the context. In particular, the terms "comprises" and "comprising" should be interpreted as referring to elements, components, or steps in a non-exclusive manner, indicating that the referenced elements, components, or steps may be present, or utilized, or combined with other elements, components, or steps that are not expressly referenced. Where the specification claims refers to at least one of something selected from the group consisting of A, B, C ... .and N, the text should be interpreted as requiring only one element from the group, not A plus N, or B plus N, etc. 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 appended claims.
While embodiments of the present disclosure have been illustrated and
described, it will be clear that the disclosure is not limited to these embodiments only. Numerous modifications, changes, variations, substitutions, and equivalents will be apparent to those skilled in the art, without departing from the spirit and scope of the disclosure, as described in the claims.
ADVANTAGES OF THE INVENTION
The present disclosure provides a hybrid power conditioning unit (PCU) with
high power startup profile to deliver multiple times of rated power for few seconds to start any typical load which demands high starting current.
The present disclosure provides a hybrid PCU having multiple power interface
of grid, solar and internal battery or super-capacitor to deliver high power profile.

We Claim:
1. A power conditioning unit (PCU) (100) to generate using a set of internal battery
(106) a need based boosted power that is multiple times of a rated power associated with a
load (108), the PCU comprising:
receiving at the PCU an input power from at least one of the internal battery of the set of internal battery (106), wherein the internal battery act as local energy stogare with limited power delivery capacity;
sensing by a controller unit (114-1) incoming signals from a one of a plurality of power legs and demand from a connected load; and
controlling by the controller unit (114-1) one of the plurality of power legs to generate the need based boosted power that is multiple times of the rated power and where the PCU delivers an instaneous power in multiples of the normal connected load.
2. The PCU (100) as claimed in claim 1, wherein the load is one of an induction motor based device or an electronic engine that demands high starting current.
3. The PCU (100) as claimed in claim 1, wherein the PCU is a hybrid PCU with a high startup power profile that senses the power need and activates necessary control instructions to provide the power and later operates at a rated load capacity.
4. The PCU (100) as claimed in claim 1, wherein the at least one power source is selected from any or a combination of an electric grid, a renewable energy power source, and a battery.
5. The PCU (100) as claimed in claim 1, wherein the PCU is configured to operate as a device selected from any or a combination of a grid tie inverter, a static voltage regulator, a battery charger and a high startup power profile.
6. The PCU (100) as claimed in claim 1, wherein the plurality of power legs (110) comprises:
a first power leg (110-1) adapted to operate as a line-in (112-1) to form a DC-bus, wherein the first power leg is electrically coupled to a LC filter to operate to boost a power factor correction (PFC) during a power draw and operate as a grid tie inverter during power feed to the grid;
a second power leg (110-2) adapted to operate as a line-out (112-2), wherein the second power leg is electrically coupled to a filter to operate at a fixed frequency Pulse Width Modulation (PWM) and a folded sine modulating signal to generate a regulated voltage; and

a third power leg (110-3) adapted to operate as a neutral (112-3), wherein the third power leg is synchronized with a line frequency to enable neutral level switching.
7. The PCU (100) as claimed in claim 6, wherein the controller unit (114-1) is configured to sense one or more properties of an incoming signal at the first power leg and a feedback signal from the third power leg, and generates said modulation and said folded sine modulation at the second power leg to generate the power that is multiple times of the rated power associated with the load.
8. The PCU (100) as claimed in claim 1, wherein the plurality of power legs comprises a fourth power leg (110-4) adapted to operate as a boost converter with maximum power point tracking (MPPT) (104).
9. The PCU (100) as claimed in claim 1, wherein the plurality of power legs comprises:
a fifth power leg (110-5) and a sixth power leg (110-6) adapted to operate as boost converters with phase shift operation to reduce ripples; and
a seventh power leg (110-7) adapted to operate as a buck converter for a battery charger from a DC-bus.
10. The PCU (100) as claimed in claim 1, wherein the controller unit (114-1) is selected from any or a combination of a microcontroller unit (MCU) or digital signal processor (DSP).
11. A method (900) for generating a boosted power that is multiple times of a rated power associated with a load, the method comprising:
receiving (902), at an at least one input of a power conditioning unit (PCU) (100), an input power from at least one power source, wherein the at least one power source is selected from any or a combination of an electric grid, a renewable energy power source, and a battery;
controlling (904), at a controller unit of the PCU, a plurality of power legs for generating the boosted power that is multiple times of the rated power associated with the load based at least on one or more properties of the received input power, wherein the plurality of power legs having:
a first power leg (110-1) adapted to operate as a line-in (112-1) to form a DC-bus, wherein the first power leg is electrically coupled to a LC filter to operate to boost a power factor correction (PFC) during a power draw and operate as a grid tie inverter during power feed to the PFC;
a second power leg (110-2) adapted to operate as a line-out (112- 2), wherein the second power leg is electrically coupled to a filter to operate at a PWM and a folded sine modulation to generate a regulated voltage; and

a third power leg (110-3) adapted to operate as a neutral (112-3), wherein the third power leg is synchronized with a line frequency to enable neutral level switching.