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US 7,166,928 B2Granted
Voltage control for wind generators
AssigneeGeneral Electric Company
InventorEinar V. Larsen
Life of this patent
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Abstract
A wind turbine generator control system includes relatively fast regulation of voltage near the individual generators with relatively slower overall reactive power regulation at a substation or wind farm level. The setpoint of the relatively fast voltage regulator is adjusted by the relatively slow reactive power regulator. The fast voltage regulation can be at the generator terminals or at a synthesized remote point.
Claims5
A method comprising:
- receiving a reactive power command for a wind turbine generator;
- limiting the reactive power command to a predetermined reactive power range to generate a limited reactive power signal;
- generating a reactive power error signal based on a measured reactive power and the limited reactive power signal;
- generating a voltage command based on the reactive power error signal, wherein the voltage command is limited to a predetermined voltage range;
- generating a voltage error signal based on a measured voltage and the voltage command;
- and
- generating a current command based on the generated voltage error signal, wherein the current command is limited to a predetermined current range, and a contemporaneous power output.
4 more elements
Dependencies are inferred from the claim text.