Fluid reaction surfaces (i.e. – impellers) – Method of operation
Reexamination Certificate
2006-10-10
2006-10-10
Look, Edward K. (Department: 3745)
Fluid reaction surfaces (i.e., impellers)
Method of operation
C416S009000, C415S004300
Reexamination Certificate
active
07118339
ABSTRACT:
A method for reducing load and providing yaw alignment in a wind turbine includes measuring displacements or moments resulting from asymmetric loads on the wind turbine. These measured displacements or moments are used to determine a pitch for each rotor blade to reduce or counter asymmetric rotor loading and a favorable yaw orientation to reduce pitch activity. Yaw alignment of the wind turbine is adjusted in accordance with the favorable yaw orientation and the pitch of each rotor blade is adjusted in accordance with the determined pitch to reduce or counter asymmetric rotor loading.
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T. Rovio, H. Viriala, L. Soderlund, J. Kriikka; “Axial and Radial Flux Generators in Small-Scale Wind Power Production”;Institute of Electromagnetics, Tampere University of Technology, Finland, Date Unknown.
Moroz Emilian Mieczyslaw
Pierce Kirk Gee
Armstrong Teasdale LLP
Edgar Richard A.
General Electric Company
Look Edward K.
McGinness, Esq. James E.
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