Control of power, loads and/or stability of a horizontal axis wind turbine by use of variable blade geometry control
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- DANMARKS TEKNISKE UNIV
- Publication Date
- 2006-05-31
- Estimated Expiration
- Not applicable · inactive patent
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Abstract
Description
technical field
[0001] Preferred embodiments of the present invention relate to a design concept according to which, by using active geometry control (e.g. smart materials or embedded mechanical actuators), or using passive geometry control (e.g. by blade loads and and / or deformation-induced changes), or a combination of these two methods, enables rapid changes in blade geometry to control wind turbine power, loads, and / or stability. In particular the invention relates to a wind turbine blade, a wind turbine and a method of controlling a wind turbine. Background technique
[0002] Almost all large wind turbines manufactured today are equipped with tilt bearings at the blade root, so that the pitch angle (pitch) of the entire blade can be easily changed by activating the tilt mechanism. The change in blade pitch acts as a brake to stop the rotor and can also be used to control power and load differently. On current stall-controlled wind turbines, the pitch of the blades can...