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US 8,138,621 B2Granted
Wind energy installation and method of controlling the output power from a wind energy installation
AssigneeSiemens Aktiengesellschaft
InventorHenrik Stiesdal
Life of this patent
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Abstract
A wind energy installation and a method of controlling the output power from a wind energy installation to an electrical grid with a specified nominal grid frequency are provided, in which the output power is controlled as a function of the time derivative of the grid frequency.
Claims9
A method of controlling the output power from a wind energy installation to an electrical grid with a specified nominal grid frequency, comprising:
- sensing an actual grid frequency;
- and
- controlling the output power of the wind energy installation to the electrical grid as a function of the time derivative of the actual grid frequency.
A wind energy installation connected to a utility grid for delivering output power to the utility grid, comprising:
- a wind driven generator;
- a generator electronics;
- a frequency sensor constructed and arranged to measure the grid frequency present in the utility grid and to output a frequency signal representing the grid frequency;
- and
- a control unit connected to the generator electronics for delivering a control signal and connected to the frequency sensor for receiving the frequency signal and is adapted to calculate the control signal such that the output power delivered to the grid depends on the time derivative of the grid frequency.
2 more elements
Dependencies are inferred from the claim text.