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US 7,952,232 B2Granted
Wind turbine energy storage and frequency control
AssigneeGeneral Electric Company
InventorsRajni Kant Burra, Robert William Delmerico, Ralph Teichmann, Abhitap Jain, Mark Shu
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Abstract
Commands are generated for controlling a state of charge of an energy storage device coupled between an energy source and an auxiliary load. Commands are also generated for providing from the energy storage device to the auxiliary load and for using power from the energy storage device for controlling a DC link voltage, energy source torque, grid side power flow, or combinations thereof. Commands may also be generated to provide frequency compatible power to auxiliary loads of the energy source.
Claims12
An energy storage system comprising:
- (a) an uninterruptible power supply (UPS) system comprising:
- (i) an energy storage device;
- (ii) a bi-directional converter coupled across a source DC link of a power conversion system of an energy source;
- (iii) a UPS inverter coupled to an auxiliary load of the energy source;
- and
- (iv) a UPS DC link coupling the bi-directional converter and the UPS inverter, wherein the energy storage device is coupled to the UPS DC link;
- and
- (b) a control system configured for generating commands for controlling a state of charge of the energy storage device and providing power from the energy storage device to the auxiliary load.
5 more elements
A method comprising:
- coupling a bi-directional converter across a source DC link of a power conversion system of an energy source;
- coupling a UPS inverter to an auxiliary load;
- coupling a UPS DC link between the bi-directional converter, the UPS inverter, and an energy storage device;
- and
- providing power from the energy storage device to the auxiliary load.
2 more elements
Dependencies are inferred from the claim text.