Modular AC output battery load levelling system
First Claim
1. An electrical load levelling system, comprising:
- a plurality of modules, each having an AC power input and an AC power output;
electrical energy storage means associated with each said module, said energy storage means having a DC power input and a DC power output;
power conversion means associated with each said module for converting output DC power from said energy storage means to AC power for output from said module, and input AC power to said module to DC power for input to said energy storage means;
power transfer means associated with each said module for inputting and outputting said AC power to and from said module; and
control means for controlling the supply of AC power to said system and the output of AC power from said system;
so that said system is adapted to receive electrical energy during periods of off-peak electrical demand, store said electrical energy until demand exists for said stored electrical energy and said demand is detected by said control means, and output electrical energy in response to said demand.
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Accused Products
Abstract
An electric load levelling system includes a plurality of individual modules for storing and supplying AC electrical power. Each module is preferably contained within a separate enclosure and includes a plurality of individual electrochemical storage cells for storing DC electrical energy. Each enclosure includes a power conversion mechanism for converting input AC power for storage in the enclosed DC cells, and output DC power from the cells to AC for supply to an input/output line. The system is capable of storing electrical energy during periods of off-peak demand, and outputting such stored energy during periods of peak demand. The individual modules function as an "AC battery" having an AC input and output, and are adapted for mass production and ease of interchangeability.
72 Citations
23 Claims
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1. An electrical load levelling system, comprising:
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a plurality of modules, each having an AC power input and an AC power output; electrical energy storage means associated with each said module, said energy storage means having a DC power input and a DC power output; power conversion means associated with each said module for converting output DC power from said energy storage means to AC power for output from said module, and input AC power to said module to DC power for input to said energy storage means; power transfer means associated with each said module for inputting and outputting said AC power to and from said module; and control means for controlling the supply of AC power to said system and the output of AC power from said system; so that said system is adapted to receive electrical energy during periods of off-peak electrical demand, store said electrical energy until demand exists for said stored electrical energy and said demand is detected by said control means, and output electrical energy in response to said demand. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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- 19. In a battery load levelling system for connection to an AC power source, said load levelling system including one or more battery cells each being adapted to selectively receive, and selectively discharge DC electrical power, the improvement comprising an enclosure for housing one or more of said battery cells, each said enclosure including power conversion means housed therein for converting input AC power from said AC power source to DC power for storage in said one or more battery cells, and for converting DC power from said one or more battery cells to output AC power.
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22. A battery load levelling system, comprising:
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a plurality of energy storage modules adapted to selectively receive and selectively discharge electrical power, said modules being adapted to receive AC power and to output AC power; rack means for supporting said plurality of energy storage modules; a plurality of power transfer conduits for supplying power to said modules and discharging power from said modules; conduit support means associated with said rack means for supporting said power transfer conduits; a receptacle mounted to said rack means adjacent each said energy storage module, each said receptacle being interconnected with one of said power transfer conduits; and cord means associated with each said module for inputting and outputting AC power to and from said module, said cord means being connectable and disconnectable to and from one of said receptacles; wherein said modules may be individually removed from said system by disconnection of said cord means without disruption to said system. - View Dependent Claims (23)
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Specification