GB2616418A - A system and method of renewable energy distribution - Google Patents

A system and method of renewable energy distribution Download PDF

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Publication number
GB2616418A
GB2616418A GB2203067.0A GB202203067A GB2616418A GB 2616418 A GB2616418 A GB 2616418A GB 202203067 A GB202203067 A GB 202203067A GB 2616418 A GB2616418 A GB 2616418A
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GB
United Kingdom
Prior art keywords
grid
premises
renewable energy
distribution board
switch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
GB2203067.0A
Other versions
GB202203067D0 (en
Inventor
Mutch David
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SWANBARTON Ltd
Original Assignee
SWANBARTON Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SWANBARTON Ltd filed Critical SWANBARTON Ltd
Priority to GB2203067.0A priority Critical patent/GB2616418A/en
Publication of GB202203067D0 publication Critical patent/GB202203067D0/en
Publication of GB2616418A publication Critical patent/GB2616418A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/12—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load
    • H02J3/14—Circuit arrangements for ac mains or ac distribution networks for adjusting voltage in ac networks by changing a characteristic of the network load by switching loads on to, or off from, network, e.g. progressively balanced loading
    • H02J3/144—Demand-response operation of the power transmission or distribution network
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
    • H02J3/381—Dispersed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2300/00—Systems for supplying or distributing electric power characterised by decentralized, dispersed, or local generation
    • H02J2300/20—The dispersed energy generation being of renewable origin
    • H02J2300/22—The renewable source being solar energy
    • H02J2300/24—The renewable source being solar energy of photovoltaic origin
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Supply And Distribution Of Alternating Current (AREA)

Abstract

A switch 24, 26 is provided and configured to selectively connect the output of the grid-tie inverter 22 to either first premises 1 or second premises 2. The grid-tie inverter 22 converts the DC output of a renewable energy source 20 to an AC output. In this way because of differences between the patterns of electricity consumption across the day, the renewable energy generated gets greater utilization than would otherwise be the case, so less renewable power is wasted. Local renewable generation is seldom 100% utilized by the consumer, because the premises typically don’t always use all the renewable power for all the time. Accordingly, the output of grid-tie inverters typically slightly exceeds that of the grid so that power may flow to the grid if the demand at the consumer’ premises is insufficient. However, feeding electrical power back to the grid is inefficient due to transmission losses, and is preferably avoided.

Description

A SYSTEM AND METHOD OF RENEWABLE ENERGY DTSTRIBUTTON
The present invention relates generally to a renewable energy distribution system and a method of distributing renewable energy and finds particular, although not exclusive, utility in local domestic instillations.
Historically, electricity is delivered to consumers from producers via an electrical grid comprising power stations (typically located away from heavily populated areas), a power transmission network to convey electricity from the power stations, and electrical substations to step voltage down from the level used in the power transmission network to a required service voltage. Consumers premises are connected to the electrical grid via respective distribution boards / consumer units and associated electricity meters. Recently, consumers have sttrted to install renewable electricity generation equipment (e.g. solar PV, wind turbines, etc.) at their premises, in order to reduce their costs in purchasing electricity via a grid or network, to gain by selling electricity via a grid or network and/or to reduce their carbon footprint. The generation equipment is connected to the premises' electrical distribution wires, subject to permission from the local network operator. Typically, the generation equipment produces DC electricity, which is convened to AC at the premises by a grid-tie inverter. A grid tied inverter causes the Frequency and phase of the AC produced to match that of the grid.
Renewable generation is seldom 100°/0 utilized by the consumer, because the premises typically don't ahvays use all of the renewable power for all of the time. Accordingly, the grid-tie inverter typically causes the voltage of the AC produced to very slightly exceed that of the grid, so that power flows from the renewable energy generation equipment via the grid-fie inverter to the grid, if the demand at the consumer' premises is insufficient.
However, feeding electrical power back to the grid is inefficient due to transmission losses, and is preferably avoided.
According to a first aspect of the present invention, there is provided a renewable energy distribution system, the system comprising: renewable energy generating equipment configured to generate DC electrical power; a grid-tie inverter in electrical communication with the renewable energy generating equipment, and configured to convert the DC electrical power into AC power suitable for supply to an electrical grid; and a switch disposed behveen the grid-tie inverter and the grid, the switch configured to selectively connect the grid-tic inverter to only one of a first distribution board of first premises, or a second distribution board of second premises.
In this way, more than one premises may benefit from the renewable energy generation. In particular, because of differences between the patterns of electricity consumption across the day, and/or because the owners of the several premises may be signed up to different supply tariffs, the renewable generation may be, at different times, of most utility to different premises. Accordingly, the renewable energy generated gets greater utilization than would otherwise be the case, so less renewable power is wasted. The renewable energy generating equipment may comprise only one, one or more, or more than one wind turbine, photovoltaic system, hydroelectric system, bio-liquid/ hiodiesel generator, and/or equivalent system.
The DC electrical power may be generated directly by the renewable energy generating equipment, and/or may be generated indirectly, for example by cogeneration / (micro) combined heat and power (CUP) and/or the use of a heat engine.
The grid-tie inverter may have an internal controller that senses the AC grid waveform, and outputs a voltage to correspond therewith. In a grid segment with considerable power from renewable sources, voltage levels might rise too high at times of high production, e.g. around noon with solar panels. Accordingly, the present invention can avoid this by preventing injection of electricity into the grid.
The switch may comprise a computerized control unit. The control unit may comprise relays or electronic switches to ensure that there is only one active electrical connection to only one distribution board of a single premises at a time. The control unit is configured to switch which premises get the benefit of the associated renewable energy generated.
The switch being disposed between the grid-tic inverter and the grid ensures that the grid-tic inverter senses the AC grid waveform at the relevant connection on the grid. Selectively connecting may mean selecting between the first or second distribution board, but not connecting to them both at the same time. However, in alternative arrangements, it may possible to connect to more than one distribution board at the same 30 time.
The distribution boards may comprise a component that divides an electrical power feed from the grid and/or from the renewable energy generating equipment into subsidiary circuits for use in the respective premises. The distribution boards may provide a respective protective fuse / circuit breaker "/ RCD For each circuit, which may be housed in a common enclosure.
The renewable energy distribution system may further comprise: second renewable energy generating equipment configured to generate DC electrical power; a second grid-tie inverter in electrical communication with the second renewable energy generating equipment, and configured to convert the DC electrical power into AC power suitable for supply to the electrical grid; and the switch disposed between the second grid-tie inverter and the grid, the switch configured to selectively connect the first and second grid-tie inverter to only one of the first distribution board of the first premises, or the second distribution board of the second premises.
That is, the system may comprise additional renewable energy generating equipment.
The renewable energy distribution system may further comprise: second renewable energy generating equipment configured to generate DC electrical power; a 1 5 second grid-tie inverter in electrical communication with the second renewable energy generating equipment, and configured to convert the DC electrical power into AC power suitable for supply to the electrical grid; and a second switch disposed between the second grid-tic inverter and the grid, the second switch configured to selectively connect the second grid-tie inverter to only one of a third distribution board of third premises or a fourth distribution board of fourth premises.
In this way, additional premises may be supplied with renewable energy.
The third distribution board of third premises may comprise the first distribution board of the first premises.
In this way, the one premises may benefit from additional renewable energy generating equipment.
The fourth distribution board of fourth premises may comprise the second distribution board of the second premises.
in this way, each piece of renewable energy equipment may be controlled independently of each other.
The switch and the second switch may be configured to communicate with one another such that demand can be matched to consumption.
Communication may be by any conventional means such as wired, wireless, the interne, a telecommunication system, etc. The switch may comprise a first sub-switch disposed between the grid-tic inverter and the first distribution board of the first premises, and a second sub-switch disposed between the grid-tic inverter and the second distribution board of the second premises, the first and second sub-switches configured to communicate with each other to selectively connect the grid-tie inverter to only one of a first distribution board of first premises, or a second distribution board of second premises.
The switch comprises electrical consumption monitoring equipment configured to monitor consumption at the first and/or second premises and selectively connect the grid-tie inverter to only one of a first distribution board of first premises, or a second distribution board of second premises in response to said monitored consumption.
Alternatively, switching may be managed on the basis of a daily schedule, the value of a varying supply tariff, or some other basis.
For safety, if a grid-tie inverter is disconnected from the grid, it usually suspends its operation (producing no voltage) until it detects that the grid connection has been restored. in this way, in the event of a blackout, generated energy is prevented from harming any line workers who are sent to repair the power grid.
According to a second aspect of the present invention, there is provided a renewable energy distribution system switch, the switch for use in a renewable energy distribution system comprising: renewable energy generating equipment configured to generate DC electrical power; and a grid-tie inverter in electrical communication with the renewable energy generating equipment, and configured to convert the DC electrical power into AC power suitable for supply to an electrical grid; the switch disposed between the grid-tie inverter and the grid, and the switch configured to selectively connect the grid-tie inverter to only one of a first distribution board of first premises, or a second distribution board of second premises.
According to a third aspect of the present invention, there is provided a method of distributing renewable energy, the method comprising the steps of: providing a renewable energy distribution system according to the first aspect; generating DC electrical power with the renewable energy generating equipment; converting the DC electrical power into AC power suitable for supply to an electrical grid with the grid-he inverter; and selectively connecting the grid-tie inverter to only one of a first distribution board of first premises, or a second distribution board of second premises, with the switch.
The above and other characteristics, features and advantages of the present invention will become apparent from the following detailed description, taken in conjunction with the accompanying drawings, which illustrate, by way of example, the principles of the invention. This description is given for the sake of example only, without limiting the scope of the invention. The reference figures quoted below refer to the attached drawings.
Figure I shows a system for distributing renewable energy.
The present invention will be described with respect to certiin drawings but the invention is not limited thereto but only by the claims. The drawings described are only schematic and are non-limiting. Each drawing may not include all of the features of the invention and therefore should not necessarily be considered to be an embodiment of the invention. In the drawings, the size of some of the elements may he exaggerated and not drawn to scale for illustrative purposes. The dimensions and the relative dimensions do not correspond to actual reductions to practice of the invention.
Furthermore, the terms first, second, third and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a sequence, either temporally, spatially, in ranking or in any other manner. It is to be understood that the terrns so used arc interchangeable under appropriate circumstances and that operation is capable in other sequences than described or illustrated herein. Likewise, method steps described or claimed in a particular sequence may be understood to operate in a different sequence.
Moreover, the tams top, bottom, over, under and the like in the description and the claims are used for descriptive purposes and not necessarily for describing relative positions. It is to be understood that the tams so used are interchangeable under appropriate circumstances and that operation is capable in other orientations than described or illustrated herein.
It is to be noticed that the term "comprising", used in the claims, should not be interpreted as being restricted to the means listed thereafter; it does not exclude other elements or steps. It is thus to be interpreted as specifying the presence of the stated features, integers, steps or components as referred to, but does not preclude the presence or addition of one or more other features, integers, steps or components, or groups thereof Thus, the scope of the expression "a device comprising means A and B" should not he limited to devices consisting only of components A and B. It means that with respect to the present invention, the only relevant components of the device are A and B. Similarly, it is to be noticed that the term "connected", used in the description, should not be interpreted as being restricted to direct connections only. Thus, the scope of the expression "a device A connected to a device B" should not be limited to devices or systems wherein an output of device A is directly connected to an input of device B. It means that there exist a path between an output of A and an input of B which may be a path including other devices or means. "Connected" may mean that two or more elements are either in direct physical or electrical contact, or that two or more elements are not in direct contact with each other but yet still co-operate or interactwith each other.
For instance, wireless connectivity is contemplated.
Reference throughout this specification to "an embodiment" or "an aspect" means that a particular feature, structure or characteristic described in connection with the embodiment or aspect is included in at least one embodiment or aspect of the present 1 5 invention. Thus, appearances of the phrases "in one embodiment", "in an embodiment", or "in an aspect" in various places throughout this specification are not necessarily all referring to the same embodiment or aspect, but may refer to different embodiments or aspects. Furthermore, the particular features, structures or characteristics of any one embodiment or aspect of the invention may be combined in any suitable manner with any other particular feature, structure or characteristic of another embodiment or aspect of the invention, as would be apparent to one of ordinary skill in the art from this disclosure, in one or more embodiments or aspects.
Similarly, it should be appreciated that in the description various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. This method of disclosure, however, is not to be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Moreover, the description of any individual drawing or aspect should not necessarily be considered to be an embodiment of the invention. Rather, as the following claims reflect, inventive aspects lie in fewer than all features of a single foregoing disclosed emboditnent. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Furthermore, while some embodiments described herein include some features included in other embodiments, combinations of features of different embodiments are meant to be within the scope of the invention, and form yet further embodiments, as will be understood by those skilled in the art For example, in the following claims, any of the claimed embodiments can be used in any combination.
In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the invention may be practised without these specific details. In other instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this
description.
In the discussion of the invention. unless stated to the contrary, the disclosure of alternative values for the upper or lower limit of the permitted range of a parameter, coupled with an indication that one of said values is more highly preferred than the other, is to be construed as an implied statement that each intermediate value of said parameter, lying between the more preferred and the less preferred of said alternatives, is itself preferred to said less preferred value and also to each value lying between said less preferred value and said intermediate value.
ThC LISC of the term "at least one" may TI1Call only uric in certain circumstances.
The use of the term "any" may mean "all" and/or "each" in certain circumstances.
The principles of the invention will now be described by a detailed description of at least one drawing relating to exemplary features. it is clear that other arrangemen can be configured according to the knowledge of persons skilled in the art without departing from the underlying concept or technical teaching, the invention being limited only by the terms of the appended claims.
Figure 1 shows a system for distributing renewable energy. First premises 1, second premises 2 and third premises 3 are shown electrically connected to an electrical grid 10 A wind turbine 20 is provided between the first premises 1 and the second premises 2, and is connected to a grid-tie converter 22 for converting DC electricity produced by the wind turbine into AC electricity compatible with grid 10 electricity.
A pair of sub-switches 24, 26 are respectively connected to distribution lines of the first premises 1 and the second premises 2. the sub-switches are in communication with one another to allow them to cooperate to selectively connect the grid-tie converter 22 to either the distribution line of the first premises 1 or the distribution line of the second premises 2.
Optionally, selection of which preinises to connect to is established by means of monitoring consumption at each premises.
A solar panel 30 is provided between the second premises 2 and the third premises 3, and is connect to a second grid-tie converter 32 for converting DC electricity produced by the solar panel into AC electricity compatible with grid 10 electricity.
A single switch 34 is provided to selectively connect the second grid-tie converter 32 to either the distribution line of the second premises 2 or the distribution line of the third premises 3.
Optionally, the switch 34 may communicate with the pair of sub-switches 24.26 to ensure that too much electricity is not supplied to the second premises 2 at the same time.

Claims (10)

  1. CLAIMS1. A renewable energy distribution system, the system comprising: renewable energy generating equipment configured to generate DC electrical power; a grid-tie inverter in electrical communication with the renewable energy generating equipment, and configured to convert the DC electrical power into AC power suitable for supply to an electrical grid; and a switch disposed between the grid-tie inverter and the grid, the switch configured to selectively connect the grid-tie inverter to only one of a first distribution board of first premises, or a second distribution board of second premises.
  2. 2. The renewable energy distribution system of claim 1, further comprising: second renewable energy generating equipment configured to generate DC electrical power; a second grid-tie inverter in electrical communication with the second renewable energy generating equipment and configured to convert the DC electrical power into AC power suitable for supply to the electrical grid; and the switch disposed between the second grid-tie inverter and the grid, the switch configured to selectively connect the first and second grid-tie inverter to only one of the first distribution board of the first premises, or the second distribution board of the second premises.
  3. 3. The renewable energy distribution system of claim 1, further comprising: second renewable energy generating equipment configured to generate DC electrical power: a second grid-tie inverter in electrical communication with the second renewable energy generating equipment, and configured to convert the DC electrical power into AC power suitable for supply to the electrical grid; and a second switch disposed between the second grid-tie inverter and the grid, the second switch configured to selectively connect the second grid-tie inverter to only one of a third distribution board of third premises, or a fourth distribution board of fourth preniises.
  4. 4 The renewable energy distribution system of claim 3, wherein the third distribution board of third premises comprises the first distribution board of the first premises.S
  5. 5. The renewable energy distribution system of claim 4, wherein the fourth distribution board of fourth premises comprises the second distribution board of the second premises.
  6. 6. The renewable energy distribution system of any one of claims 3 to 5, wherein the switch and the second switch are configured to communicate with one another such that demand can be matched to consumption.
  7. 7. The renewable energy distribution system of any preceding claim, wherein the switch comprises a first sub-switch disposed between the grid-tic inverter and the first distribution board of the first premises, and a second sub-switch disposed between the grid-tie inverter and the second distribution board of the second premises, the first and second sub-switches configured to communicate with each other to selectively connect the grid-tie inverter to only one of a first distribution board of first premises, or a second distribution board of second premises.
  8. 8. The renewable energy distribution system of any preceding claim, wherein the switch comprises electrical consumption monitoring equipment configured to monitor consumption at the first and/or second premises and selectively connect the grid-fie inverter to only one of a first distribution board of first premises, or a second distribution board of second premises in response to said monitored consumption.
  9. 9 A renewable energy distribution system switch, the switch for use in a renewable energy distribution system comprising: renewable energy generating equipment configured to generate DC electrical power; and a grid-tie inverter in electrical communication with the renewable energy generating equipment, and configured to convert the DC electrical power into AC power suitable for supply to an electrical grid; the switch disposed between the grid-tie inverter and the grid, and the switch S configured to selectively connect the grid-tie inverter to only one of a first distribution board of first premises, or a second distribution board of second premises.
  10. 10. A method of distributing renewable energy, the method comprising the steps of: providing a renewable energy distribution system according to claim 1; generating DC electrical power with the renewable energy generating equipment; converting the DC electrical power into AC power suitable for supply to an electrical grid with the grid-tie inverter; and selectively connecting the grid-tic inverter to only one of a first distribution board of first premises, or a second distribution board of second premises, with the switch.
GB2203067.0A 2022-03-04 2022-03-04 A system and method of renewable energy distribution Pending GB2616418A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2203067.0A GB2616418A (en) 2022-03-04 2022-03-04 A system and method of renewable energy distribution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2203067.0A GB2616418A (en) 2022-03-04 2022-03-04 A system and method of renewable energy distribution

Publications (2)

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GB202203067D0 GB202203067D0 (en) 2022-04-20
GB2616418A true GB2616418A (en) 2023-09-13

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018188872A1 (en) * 2017-04-13 2018-10-18 Sma Solar Technology Ag System for distributing locally generated energy to multiple load units
WO2020061651A1 (en) * 2018-09-28 2020-04-02 Graham Enterprises Holdings Pty Ltd Electricity supply controller system
WO2021068023A1 (en) * 2019-10-09 2021-04-15 Allume Energy Pty Ltd Ac power sharing system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018188872A1 (en) * 2017-04-13 2018-10-18 Sma Solar Technology Ag System for distributing locally generated energy to multiple load units
WO2020061651A1 (en) * 2018-09-28 2020-04-02 Graham Enterprises Holdings Pty Ltd Electricity supply controller system
WO2021068023A1 (en) * 2019-10-09 2021-04-15 Allume Energy Pty Ltd Ac power sharing system

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