Method for operating a device to vary a blade setting angle,...

Details Method for operating a device to vary a blade setting angle,... Method for operating a device to vary a blade setting angle,...

2011-01-11

2011-01-11

Edgar, Richard (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Method of operation

C416S031000, C416S155000

Reexamination Certificate

active

07866946

ABSTRACT:
A method for operating a device to vary a blade setting angle on a rotor blade of a wind power plant, comprising two variable drives each per rotor blade, a bearing element acting between the rotor blade and rotor hub which has a freely rotatable bearing ring, wherein the method has the following process steps: setting the bearing ring into a permanent rotation by a first drive, and adjusting the setting angle of the rotor blade by a second drive.

REFERENCES:
patent: 2002/0047275 (2002-04-01), Wobben
patent: 2003/0075929 (2003-04-01), Weitkamp
patent: 2003/0116970 (2003-06-01), Weitkamp et al.
patent: 2004/0240997 (2004-12-01), Wobben
patent: 196 34 059 (1997-10-01), None
patent: 100 44 262 (2002-03-01), None
patent: 101 40 793 (2003-03-01), None

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