DESC:FORM 2

The Patent Act 1970 (39 of 1970)
&
The Patent Rules, 2005

COMPLETE SPECIFICATION

(SEE SECTION 10 AND RULE 13)

SYSTEM AND METHOD FOR GENERATING ELECTRICAL POWER TO AN ELECTRICAL GRID

Applicant Name: Analogics Tech India Limited

Nationality: Indian Company

Address: Plot No.9/10, Road No.6, Nacharam Industrial Estate, Hyderabad-500076, Telangana, India.

The following specification particularly describes and ascertains the nature of this invention and the manner in which it is to be performed:-

SYSTEM AND METHOD FOR GENERATING ELECTRICAL POWER TO AN ELECTRICAL GRID

TECHNICAL FIELD

[001] The disclosed subject matter relates generally to a system and method for generating an output electrical power from an input electrical power. More particularly, the present disclosure relates to a system and method for generating the electrical power to activate a water pump and transferring the generated electrical power to an electrical grid.

BACKGROUND

[002] Over the years, there has been volatility in the price of electrical power, and consequently, the use of certain fuels has increased. The use of certain fuels has been found to be harmful to the environment. For example, when the electrical power is generated from coal, large amounts of carbon dioxide are emitted into the environment, which contributes to poor air quality and global warming. As a result, alternative energy sources that are becoming increasingly popular are solar power, wind power, hydropower, geothermal power, biomass power, etc. the alternative energy sources which are not as much expensive and more environmentally friendly. Solar power is a renewable power source that produces power at a fuel cost of zero and can be used in a variety of settings, including but not limited to residential, commercial property settings, etc.

[003] A country with a majority of the population depending on agriculture as their main source of income for livelihood. Still today many factors are affecting their revenue generation from agriculture, let it be an environment, availability of power or good infrastructure for agriculture purpose. Agriculture in most of the countries contributes to a high percentage of GDP and employs 50% of the country’s workforce. Reliable irrigation, therefore, is a critical requirement not just for the farmer but also for the nation. For example, India today has around 18 million grid-connected pump-sets and 7 million diesel pump-sets. However, erratic grid supply and a high cost of diesel pumping continue to remain problem areas for the farmers. Farmers feel that the crop yield could easily improve by 10% if the required volume of water is available when required. The current installed base of pumps has implications for the Government too. Agriculture demand constitutes more than 20 percent of total power demand that consumes 85 Million Tons of coal annually. This is roughly equal to the amount of coal imported into the country (in India). Additionally, more than 4 billion liters of diesel is burnt by diesel based pump sets.

[004] For an example, solar power is being used to activate the water pumps to supply water for the fields. The conventional solar water pumps are suitable for the grid of isolated rural locations in poor countries where there are high levels of solar radiation. The conventional solar water pumps can provide water without the need for any kind of fuel or the extensive maintenance as required by diesel pumps. But, the solar water pumps do not store the generated electrical power to run them when solar power is not available. The conventional solar water pumps do not export the power to the grid during the non-agriculture time and the grid-tied inverter cannot drive the water pump without the support of grid power. Thus, all the available pump systems have severe deficiencies which impair their suitability for large-scale deployment in poor undeveloped areas of the world where they are needed. Availability of dependable power for agriculture pump sets is one of the major issues in most of the countries.

[005] In the light of the aforementioned discussion, there exists a need for a certain system with novel methodologies that would overcome the above-mentioned disadvantages.

SUMMARY

[006] The following presents a simplified summary of the disclosure in order to provide a basic understanding of the reader. This summary is not an extensive overview of the disclosure and it does not identify key/critical elements of the invention or delineate the scope of the invention. Its sole purpose is to present some concepts disclosed herein in a simplified form as a prelude to the more detailed description that is presented later.

[007] An objective of the present disclosure is directed towards a system that combines the water pump controller using the variable frequency technology and the grid-tied inverter.

[008] Another objective of the present disclosure is directed towards multitasking embedded software driving single hardware unit developed to maximize the use of solar power systems deployed in the agriculture and various applicable sectors.

[009] Another objective of the present disclosure is directed towards enabling a power conditioning unit by the solar power systems and with multiple output conversion modes of operation all with the flick of a button supported by a DSP controller and the embedded software.

[0010] Another objective of the present disclosure is directed towards using hardware units for altogether different modes of conversion made possible by the embedded software codes.

[0011] Another objective of the present disclosure is directed towards providing daytime on-demand power by solar power to meet the agricultural power demand without the need to be connected to the grid.

[0012] Another objective of the present disclosure is directed towards combining the solar water pump controller using the VFD and the Grid-tied Inverter with single hardware driven by multiple firm wares.

[0013] Another objective of the present disclosure is directed towards maximizing the use of solar PV power plants deployed in an agriculture sector by a multitasking embedded software.

[0014] Another objective of the present disclosure is directed towards detecting the water level in the bore well and making optimum use of solar energy by avoiding the dry runs.

[0015] Another objective of the present disclosure is directed towards scheduling the pumping of water by sensing and detecting the moisture in the field for conserving the energy and groundwater.

[0016] Another objective of the present disclosure is directed towards operating the water pump with generated electrical power by the photovoltaic solar panels.
[0017] Another objective of the present disclosure is directed towards transferring the generated electrical power to the electrical grid when the water pump is not in use.

[0018] Another objective of the present disclosure is directed towards theft, mishandling detection and transmitting the alerts of the water pump to the end-user.

[0019] Another objective of the present disclosure is directed towards controlling the pumping water to maintain national acceptable ground table after detecting the level of water.

[0020] Another objective of the present disclosure is directed towards enabling the end user to determine the amount of energy consumed for water pumping as the energy exported to the electrical grid is recorded by the net energy meter.

[0021] Another objective of the present disclosure is directed towards getting paid for the DC PV energy generated by the system.

[0022] Another objective of the present disclosure is directed towards monitoring and controlling the water pump remotely by an end-user device.

[0023] Another objective of the present disclosure is directed towards providing a solar power meter and energy meter to the electrical grid.

[0024] Another objective of the present disclosure is directed towards controlling reactive power and harmonics to improve the grid quality.

[0025] According to an exemplary aspect, a method comprising absorbing solar power and generating the DC electrical power by the photovoltaic solar panels, delivering the generated DC electrical power to the grid-tied inverter for the operation of water pump, converting the DC electrical power to the AC electrical power and/or the DC electrical power to DC electrical power by the grid-tied inverter to operate the water pump, measuring the amount of DC electrical power or AC electrical power consumed for pumping the water and measuring the water level by the water level sensor, controlling the water pump by the grid-tied inverter and/or the end-user device, transferring the amount of electrical power to the electrical grid when the water pump is in idle condition and recording the amount of transferred electrical power to the electrical grid by the net energy meter.

[0026] According to another exemplary aspect, the system comprising a plurality of photovoltaic solar panels electrically connected to a grid-tied inverter for supplying electrical charge to the at least one grid-tied inverter in the form of direct current electrical power, the at least one grid-tied inverter configured to convert the direct current from the plurality of photovoltaic solar panels into alternating current.

[0027] According to another exemplary aspect, the system further comprising at least one water pump electrically coupled to the at least one grid-tied inverter, the grid-tied inverter configured to automatically regulate output frequency and speed of the motor according to solar radiation intensity of the plurality of photovoltaic solar panels.

[0028] According to another exemplary aspect, the system further comprising at least one end-user device configured to operate the water pump via the at least one grid-tied inverter and a network, the at least one end-user device also configured to remotely monitor the water pump via the network.

BRIEF DESCRIPTION OF THE DRAWINGS

[0029] FIG. 1 is a block diagram depicting a schematic representation of a system for generating the electrical power to activate a water pump and to an electrical grid, in accordance with one or more embodiments.

[0030] FIG. 2 is a block diagram depicting a grid-tied inverter 104 shown in FIG. 1, in accordance with one or more exemplary embodiments.

[0031] FIG. 3 illustrates a flow chart depicting an exemplary method for generating the electrical power to the water pump and transferring the generated electrical power to the electrical grid, in accordance with one or more embodiments.

DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS

[0032] It is to be understood that the present disclosure is not limited in its application to the details of construction and the arrangement of components set forth in the following description or illustrated in the drawings. The present disclosure is capable of other embodiments and of being practiced or of being carried out in various ways. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.

[0033] The use of “including”, “comprising” or “having” and variations thereof herein is meant to encompass the items listed thereafter and equivalents thereof as well as additional items. The terms “a” and “an” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced item. Further, the use of terms “first”, “second”, and “third”, and the like, herein do not denote any order, quantity, or importance, but rather are used to distinguish one element from another.

[0034] Referring to FIG. 1 is a block diagram 100 depicting a schematic representation of a system for generating the electrical power to activate a water pump and to an electrical grid, in accordance with one or more embodiments. The system 100 may include renewable power sources electrically connected to the grid-tied inverter. The renewable power sources are typically an on-site source that provides electrical power to the grid-tied inverter. Renewable generation depends on the renewable energy resources available at that site, e.g., solar, wind, hydro, geothermal, biomass, etc. Any renewable power source that provides electrical power may be utilized. The system 100 may be configured to use a set of hardware to meet varied applications through electronic switching of ingeniously designed embedded software (firmware, for e.g.) codes for the chosen function. The multitasking embedded software driving single hardware unit developed to maximize the use of solar PV power plants deployed in the agriculture sector. The system 100 may include photovoltaic solar panels 102, a grid-tied inverter 104, a water pump 106, a net energy meter 108, an electrical grid 110, AC loads 112, and an end-user device 114. The photovoltaic solar panels 102 may be configured to convert sunlight falling onto them into electricity. The photovoltaic solar panels 102 are most commonly positioned on the elevated positions. Here, the elevated positions, for example, roofs of buildings, hill stations, wall mounted, and the like. The grid-tied inverter 104 may be designed for measuring DC energy (energy generated by the photovoltaic solar panels 102, for e.g.) that day and also the accumulated energy. The grid-tied inverter 104 may be configured to convert the DC energy from the photovoltaic solar panels 102 into the AC energy. The grid-tied inverter 104 may be electrically coupled to the water pump 106. Based on the accumulated energy, the end-user enables to determine the amount of energy consumed for water pumping as the energy exported to the electrical grid 110 is recorded by the net energy meter 108. The net energy meter 108 may include, but not limited to, an AC energy meter, and the like.

[0035] In accordance with one or more exemplary embodiments of the present disclosure, the system 100 may be configured to automatic and manual change over from the grid-tied inverter mode to variable frequency drive mode with default functioning as the grid-tied inverter for optimum usage of solar energy and to get optimum performance from the unit. The grid-tied inverter 104 may include controllers configured to deliver the generated power to a variable frequency drive based controller, which converts the DC power to the AC power to operate the water pump 106. The grid-tied inverter 104 may be electrically coupled to the AC loads 112. The AC loads include electronic circuitries, the electronic circuitries may operate from direct current operational voltages. The electronic circuitry may be a personal computer, minicomputer, workstation, tablet computer, or any other commercial, or military electronic product.

[0036] The water pump 106 may include but is not limited to, AC water pump, DC water pump, and the like. The grid-tied inverter 104 may include the water pump controller with a variable frequency drive for AC pumps. The variable frequency drive may automatically regulate output frequency and speed of the motor (not shown) according to solar radiation intensity. The grid-tied inverter 104 may include a DC-DC converter 118, a battery bank 120, a reactive power compensation, and the like. The DC-DC converter 118 may be configured to convert the variable DC electrical power from the photovoltaic solar panels 102 to regulated reference DC electrical power. The battery bank 120 which is rechargeable by the photovoltaic solar panels 102. The battery bank 120 may be configured to provide the electrical power to the water pump 106 when solar power is not available, for example, during night time, the water pump 106 is operated by the battery bank 120. The grid-tied inverter 104 may be configured to transmit the alerts of the water pump 106 to the end-user device 114. The end-user device 114 may be configured to operate the water pump 106 via the grid-tied inverter 104 and a network 116. The end-user device 114 may also be configured to remotely monitor the water pump 106 via the network 116. The network 116 may include, but is not limited to, an Ethernet, a wireless local area network (WLAN), or a wide area network (WAN), a Wi-Fi communication network e.g., the wireless high-speed internet, or a combination of networks, a cellular service such as a 4G (e.g., LTE, mobile WIMAX) or 5G cellular data service. The network 116 may provide transmission of data and/or information via a control protocol, a hypertext transfer protocol, a simple object access protocol or any other internet communication protocol. The end-user device 114 may include a device such as a workstation, a personal computer or desktop, an electronic book reader, a personal digital assistant, a mobile station, mobile phones, computing tablets, and the like.

[0037] In accordance with one or more exemplary embodiments, the system 100 is designed to operate not only to work as variable frequency drive mode or grid-tied inverter mode but also acts as reactive power compensation. The grid-tied inverter 104 may be configured to inject power into the electrical grid 110 as long as the photovoltaic solar panels 102 are active and no water pumping is required. However, if the renewable energy sources are not available, such as during night hours in the case of photovoltaic solar panels 102, the grid-tied inverter 104 remains idle. One way to increase the effective utilization of the grid-tied inverter 104 is to operate as volt-ampere reactive (VAR) compensators may help in active grid voltage regulation and reduce the need of expensive capacity banks. This kind of operation is also called as active filter compensation to improve the grid power quality, which helps improving grid stability and voltage regulation. The system 100 may include solar trackers configured to automatically move to track the progress of the sun across the sky, thereby maximizing the incident radiation and so the output. The solar trackers may generate more electricity due to increased direct exposure to solar rays. There may be increased generated electrical power as much as 15 to 25% depending on the geographic location of the solar trackers. The solar trackers may include but are not limited, single-axis solar trackers, dual-axis solar trackers, and the like. Some important parameters (installation size, local weather, the degree of latitude and electrical requirements, etc.) are all important considerations that may influence the type of solar tracker best suited for a specific solar installation. The solar trackers generate more electrical power in roughly the same amount of space needed for fixed-tilt systems, making them ideal for optimizing land usage. In other exemplary embodiments, some utilities offer time of use rate plans for solar power, which means the utility may purchase the power generated during the peak time of the day at a higher rate. In this embodiment, it is beneficial to generate a great amount of electricity during these peak times of the day. The tracking system may be used to assist maximize the energy gains during the peak time periods. Advancements in technology and reliability electronics and mechanics have drastically reduced long-term maintenance concerns for the tracking systems.

[0038] In accordance with one or more exemplary embodiments, the system 100 further includes an anti-theft protection module. The rapid rate at which the anti-theft protection module has been increasing in the field of anti-theft systems. The anti-theft protection module may be configured to perform a function which is, detecting the unit theft or displacement of the unit from the original or nominated location and preventing it by raising the alarm and alerting the end-user. The anti-theft protection module may also be configured to perform the function which is, theft or disconnection of the motor may be recognized and create local alarm and sent communications to the end-user device 110. The communications may include but are not limited to, messages, emails, alerts, notifications, and the like. The system 100 may further include a water level sensor configured to sense the water level in the bore well or pond and switching the grid-tied inverter 104 on or off for optimum utilization of water table and to avoid depletion of groundwater. The water level sensor may be configured to sense the water availability and water need and may take the decision for pumping the water as desired. The grid-tied inverter 104 may include an embedded software configured to provide theta change, constant current with voltage regulation, relay connection status, vpv monitoring, protection, header files, dual maximum power point tracking, automatic three-phase detection, multiplexer operation, and the like. The theta change may be obtained from the phase locked loop block. The phase-locked loop block may not be directly applied to the electrical grid 110 through the grid-tied inverter 104 as the certain amount of delay may occur in the theta generation due to the presence of low pass filter block in the phase-locked loop software. Hence the need to modify the required theta to be in phase with the electrical grid 110.

[0039] In accordance with one or more exemplary embodiments, before connecting the grid-tied inverter 104 to the electrical grid 110, the embedded software may ensure that the grid-tied inverter 104 voltage may be the same as grid voltages for that DC voltage(Vd) is required to correspond with the available grid voltages (Va,Vb,Vc). Hence the DC voltage may get regulated up to the required level till it gets connected to the grid 110. Before exporting the electrical power to the electrical grid 110, need to check on the relay status using three grid line voltage analog to digital converters. Even though the electrical grid 110 is connected to the grid-tied inverter 104 through the relays, the grid-tied inverter 104 may not be activated till checking is done by the embedded software and one to one readings are tallied with the analog to digital converters of the three-phase voltages that are connected to the processor in the first instance. While exporting power to the electrical grid 110, if the grid-tied inverter 104 shuts down within a minute due to low Vpv, the embedded software counts and appropriate delay of 1min or 5min or 10min may be allowed before restart and this is needed as a check on the ambient environment around the controller, maybe sunrise time or sunset time. If the short circuit happens in the hardware, the embedded software shuts down full grid-tied inverter 104 within a certain time period (5 microseconds, for e.g.). The embedded software may be configured to make header files for calculating RMS voltages of three phases or line voltages and currents, dual maximum power point tracking controllers, liquid crystal displays, and the like.

[0040] In accordance with one or more exemplary embodiments, the system 100 may include a full bridge control, high switching frequency and lower parts count. The full bridge control may be configured to use the space vector pulse width modulation (SVPWM) controller, which has a significant improvement in the maximum voltage ratio and the total harmonic distortion which may make it a good system for interfacing the distributed generators to the electrical grid 110. The system 100 also includes maximum point power tracking (MPPT) methodology compatible with wide input from the solar panels 102. The MPPT may be configured for tracking the peak power under the fast varying atmospheric condition, and the output connected to further conversion stages. The MPPT with input from solar PV array and output connected to further conversion stages.

[0041] Referring to FIG. 2 is a block diagram 200 depicting the grid-tied inverter 104 shown in FIG. 1, in accordance with one or more exemplary embodiments. The grid-tied inverter 104 may include terminals 202a, 202b...202n, a DC switch 204, a DC surge protection device 206, an input filter 208, DC-DC boost converters 210a-210b, a voltage source converter 212, a SPDT relay 214, a motor 216, a LC filter 218, an output filter 220, an output relay 222, an AC surge protection device 224, output terminals L1, L2, L3, N&PE 226, a first controller 228a, a second controller 228b, a display device 230, power supply 232, and an ISO check 234.

[0042] The terminals 202a, 202b...202n may be configured for connecting photovoltaic solar panels 102. The DC switch 204 may be provided for connecting or disconnecting the photovoltaic solar panels 102 during installation or maintenance. The DC switch 204 may be switched to the on position and DC power flows from the terminals 202a, 202b…202n to the input filter 208. The DC surge protection device 206 may be configured to protect the circuit components during surges. The input filter 208 may be configured for the achievement of de-coupling photovoltaic solar panels 102 and the inverter. The input filter 208 may include but is not limited to, an electromagnetic interference filter or a radio frequency interference filter, and the like. The input filter 208 may be configured for reduction of conducted electromagnetic interference towards the photovoltaic solar panels 102. The input filter 208 may further be configured for prevention of premature panel aging, prevention of radiation of the panel, and improvement of reliability and efficiency. The DC-DC boost converters 210a-210b with the maximum power point tracking. The DC-DC boost converters 210a-210b may include, but not limited to, bidirectional DC-DC converters, and the like. The DC-DC boost converters 210a-210b may be configured to convert variable photovoltaic solar panels 102 DC voltage to regulated reference DC voltage desired or demand by the electrical grid 110. The power supply 232 may be configured to provide DC power to the DC-DC boost converters 210a-210b. The power supply 232 may include terminals configured to receive a DC power input signal. The DC power input signal may be supplied by one or more rechargeable batteries (not shown). A switching frequency (20-kHz, for e.g.) may be used to increase voltage from the photovoltaic solar panels 102 voltage (200 to 800 volts) to 600 volts DC link voltage (depends on grid voltage available for the time period). The high switching frequency may be used to lower parts count to increase the reliability and availability of the system to increase the utilization factor. The switching duty cycle may be optimized by the maximum power point tracking controller that uses the 'incremental conductance plus integral regulator' technique. This maximum power point tracking controller automatically varies the duty cycle in order to generate the required voltage to extract maximum power.

[0043] In accordance with one or more exemplary embodiments, the first controller 228a and the second controller 228b (TMS 320F 28377S, for e.g.) may include a digital signal processing embedded microcontroller. The microcontroller may include, but not limited to, high-performance static CMOS technology, high-performance 32-bit CPU, fast interrupt response and processing, unified memory programming model, and the like. The first controller 228a and the second controller 228b may include DSP based double conversion topology adopted.

[0044] In accordance with one or more exemplary embodiments, the voltage source converter 212 may be configured to convert the DC voltage to AC voltage. The voltage source converter 212 may be a 2-level 3- phase voltage source converter 212. The voltage source converter 212 may be employed for conversion of DC bus voltage to the desired three-phase AC voltage to match the grid amplitude. The voltage source converter 212 may be configured to convert the DC link voltage to certain AC volts (260 V AC) and keeps the unity power factor. The voltage source converter 212 may use control loops which may not be limited to an external control loop and an internal control loop. The external control loop may be configured to regulate DC link voltage and the internal control loop may be configured to regulate currents Id and Iq grid currents (active and reactive current components). Id current reference may include the output of the DC voltage external controller. Iq current reference may include set to zero in order to maintain the unity power factor. Vd and Vq voltage outputs of the current controller may be converted to three modulating signals (Uabc_ref ) used by the PWM Generator. The voltage source converter 212 may be configured to use a sample time for voltage and current controllers as well as for the phase locked loop synchronization unit. The voltage source converter 212 may include pulse generators configured to use a fast sample time in order to get an appropriate resolution of pulse width modulation waveforms.
[0045] In accordance with one or more exemplary embodiments, the SPDT relay 214 may be employed to take care of change over function during system change over from the grid-connected inverter mode to variable frequency drive mode. The grid-tied inverter 104 may further include the terminals configured to connect the motor 216. The LC filter 218 may be higher order power filter for the grid-tied inverter 104. The LC filter 218 may be configured to strongly attenuate the harmonic currents around the switching frequency, and the attenuation of high frequency which leads to decrease in the total inductance and volume of the LC filter 218. The output filter 220 may be configured to protect the environment from electromagnetic pollution. Also the reduction of conducted electromagnetic induction towards the electrical grid 110. The output relay 222 may be employed to take care of grid-tied inverter 104 connected to the electrical grid 110 during export solar power to the electrical grid 110.

[0046] In accordance with one or more exemplary embodiments, the AC surge protection device 224 may be provided at the output of the grid-tied inverter 104. Where the grid-tied inverter 104 output is connected to the electrical grid 110 to protect the circuit components during surge coming from the electrical grid 110. The output terminals L1, L2, L3, and N &PE 226 may be configured to connect the three-phase grid supply to the grid-tied inverter 104. The first controller 228a may be the main or master controller, which continuously sensing the input photovoltaic solar panels 102 voltage and grid voltage, an export current through the signal conditioning circuit. The first controller 228a may also be configured to calculate, control, regulates generated voltage, grid export currents by generating necessary driving pulses for the two-level three-phase bridge switching components. The two-level three-phase bridge switching components may include but are not limited to, IGBT, MOSFET, and the like. The second controller 228b may be responsible for user interface, to provide details in the display device 230 and communicate with external peripherals. The display device 230 may include but not limited to, an LCD, a LED, a digital display device such as a dot matrix display device (HD44780U, for e.g.) or other 2-dimensional display devices. By way of further example, the interface and the display device 230 may be integrated into a touch screen display device. Accordingly, the display device 230 may also be used to show a graphical user interface, which may display various information and provide forms that include fields that enable for the entry of information by the user. The display device 230 may be configured to display the status, the parameters like photovoltaic solar panels voltage, photovoltaic solar panels current, grid voltage, grid current, energy generation, and the like. The display device 230 may further be configured to display fault conditions like photovoltaic under voltage, photovoltaic overvoltage, grid out of range, grid failure, overload, and the like.

[0047] In accordance with one or more exemplary embodiments, the system 100 may further include the voltage (VDC) regulator, the current regulator, the pulse width modulation generator, and a phase locked loop module. The voltage regulator may be configured to determine the required active current (Id) reference for the current regulator. The current regulator may be configured to determine the required reference voltages for the grid-tied inverter based on the current references Id and Iq (reactive current). The pulse width modulation generator may be configured to generate firing signals to the switches based on the required reference voltages. The phase-locked loop module may be configured to generate an output signal whose phase is related to the phase of an input signal. The system 100 may also include a variable frequency oscillator and a phase detector in a feedback loop. The oscillator generates a periodic signal, and the phase detector compares the phase of that signal with the phase of the input periodic signal, adjusting the oscillator to keep the phases matched. The phase-locked loop may track an input frequency, or it may generate a frequency that is a multiple of the input frequency.

[0048] Referring to FIG. 3 illustrates a flowchart 300 depicting an exemplary method for generating the electrical power to the water pump and transferring the generated electrical power to the electrical grid, in accordance with one or more embodiments. As an option, the method 300 is carried out in the context of the details of FIG. 1, FIG. 2. However, the method 300 is carried out in any desired environment. Further, the aforementioned definitions are equally applied to the description below.

[0049] The exemplary method 300 commences at step 302 by absorbing solar power and generating the DC electrical power by the photovoltaic solar panels. Thereafter, at step 304, delivering the generated DC electrical power to the electrical grid-tied inverter for the operation of the water pump. Here, the water pump may be operated based on the solar radiation intensity. Thereafter, at step 306, converting the DC electrical power to the AC electrical power and/or the DC electrical power to DC electrical power by the grid-tied inverter to operate the water pump. Thereafter, at step 308, measuring the amount of DC electrical power or AC electrical power consumed for pumping the water and measuring the water level by the water level sensor. Thereafter, at step 310, controlling the water pump by the grid-tied inverter and/or the end-user device. Thereafter, at step 312, transferring the amount of electrical power to the electrical grid when the water pump is in idle condition. Thereafter, at step 314, recording the amount of transferred electrical power to the electrical grid by the net energy meter.

[0050] More illustrative information will now be set forth regarding various optional architectures and uses in which the foregoing method may or may not be implemented, as per the desires of the auto system/user. It should be strongly noted that the following information is set forth for illustrative purposes and should not be construed as limiting in any manner. Any of the following features may be optionally incorporated with or without the exclusion of other features described.

[0051] Thus the scope of the present disclosure is defined by the appended claims and includes both combinations and sub-combinations of the various features described hereinabove as well as variations and modifications thereof, which would occur to persons skilled in the art upon reading the foregoing description.

,CLAIMS:CLAIMS:
As claimed in:
I/We claim:
1. A system for generating the electrical power to activate a water pump and transferring the generated electrical power to an electrical grid, comprising:

a plurality of photovoltaic solar panels 102 electrically connected to at least one grid-tied inverter 104 for supplying electrical charge to the at least one grid-tied inverter 104 in the form of direct current electrical power, whereby the at least one grid-tied inverter 104 configured to convert the direct current from the plurality of photovoltaic solar panels 102 into alternating current;

at least one water pump 106 electrically coupled to the at least one grid-tied inverter 104, the grid-tied inverter 104 configured to automatically regulate output frequency and speed of motor according to solar radiation intensity of the plurality of photovoltaic solar panels 102; and

at least one end-user device 114 configured to operate the water pump 106 via the at least one grid-tied inverter 104 and a network 116, the at least one end-user device 114 also configured to remotely monitor the water pump 106 via the network 116.

2. The system as claimed in 1, wherein the grid-tied inverter 104 comprising at least one DC-DC converter 118 and at least one battery bank 120.

3. The system as claimed in 2, wherein the at least one DC-DC converter 118 configured to convert the variable direct current electrical power from the plurality of photovoltaic solar panels 102 to regulated reference direct current electrical power and the at least one battery bank 120 configured to provide the electrical power to the at least one water pump 106 when solar power is not available.

4. The system as claimed in 1, wherein the grid-tied inverter 104 configured to transmit a plurality of alerts of the water pump 106 to the at least one end-user device 114.

5. The system as claimed in 1, wherein the grid-tied inverter 104 electrically coupled to AC loads 112 and at least one net energy meter 108.

6. The system as claimed in 5, wherein the at least one net energy meter 108 configured to record the amount of electrical power to at least one electrical grid 110 from the at least one grid-tied inverter 104.

7. The system as claimed in 1, wherein the at least one grid-tied inverter 104 comprising a plurality of terminals 202a, 202b...202n configured for connecting the plurality of photovoltaic solar panels 102.

8. The system as claimed in 1, wherein the at least one grid-tied inverter 104 comprising the at least one DC switch 204 provided for connecting or disconnecting the plurality of photovoltaic solar panels 102.

9. The system as claimed in 1, wherein the at least one grid-tied inverter 104 comprising at least one DC surge protection device 206 configured to protect the circuit components during surges and at least one input filter 208 configured for the achievement of de-coupling photovoltaic solar panels 102 and the grid-tied inverter 104.

10. A method for generating the electrical power to activate a water pump and transferring the generated electrical power to an electrical grid, comprising:

absorbing solar power and generating the direct current electrical power by a plurality of photovoltaic solar panels 102;

delivering the generated direct current electrical power to at least one grid-tied inverter 104 for the operation of at least one water pump 106;
converting the DC electrical power to the AC electrical power and/or the DC electrical power to DC electrical power by the grid-tied inverter 104 to operate the at least one water pump 106;

measuring the amount of DC electrical power or AC electrical power consumed for pumping the water and measuring the water level by at least one water level sensor;

controlling the at least one water pump 106 by the at least one grid-tied inverter 104 and/or at least one end-user device 114;

transferring the amount of electrical power to the electrical grid 110 when the at least one water pump 106 is in an idle condition; and

recording the amount of transferred electrical power to the electrical grid 110 by at least net energy meter 108.