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US 6,924,565 B2Granted
Continuous reactive power support for wind turbine generators
AssigneeGeneral Electric Company
InventorsThomas A. Wilkins, Nagwa M. Elkachouty, Reigh A. Walling, James P. Lyons, Robert W. Delmerico, Sumit Bose, Nicholas Wright Miller
Life of this patent
Estimating the term…
Abstract
Real and reactive power control for wind turbine generator systems. The technique described herein provides the potential to utilize the total capacity of a wind turbine generator system (e.g., a wind farm) to provide dynamic VAR (reactive power support). The VAR support provided by individual wind turbine generators in a system can be dynamically varied to suit application parameters.
Claims40
A network of variable speed wind turbine generator systems comprising:
- a plurality of generators to generate real power and reactive power, wherein one or more of the generators includes a variable frequency converter excitation system to control real power and reactive power flow, and further wherein the variable frequency converter excitation systems are capable of contributing reactive power independently of the generators;
- and
- a system controller coupled with the plurality of generators to control real and reactive power generated by individual generators in the plurality of generators based on thermal capability and/or voltage limits of the individual generators to cause the plurality of generators to provide commanded real and reactive power.
A method comprising:
- determining power to be provided to a predetermined location;
- providing commands to individual wind turbine generators in a multi-turbine system, wherein one or more of the generators includes a variable frequency converter excitation system to control real power and reactive power flow, and further wherein the variable frequency converter excitation systems are capable of contributing reactive power independently of the generators, the commands to control real and reactive power generated by individual generators in the plurality of generators based on thermal capability and/or voltage limits of the individual generators to cause the plurality of generators to provide commanded real and reactive power;
- and
- providing power from the wind turbine generators in response to the commands.
1 more element
An apparatus comprising:
- means for determining power to be provided to a predetermined location;
- means for providing commands to individual wind turbine generators in a multi-turbine system, wherein one or more of the generators includes a variable frequency converter excitation system to control real power and reactive power flow, and further wherein the variable frequency converter excitation systems are capable of contributing reactive power independently of the generators, the commands to control real and reactive power generated by individual generators in the plurality of generators based on thermal capability and/or voltage limits of the individual generators to cause the plurality of generators to provide commanded real and reactive power;
- and
- means for providing power from the wind turbine generators in response to the commands.
1 more element
Dependencies are inferred from the claim text.