Methods and apparatus for controlling rotational speed of a...

Prime-mover dynamo plants – Electric control – Fluid-current motors

Reexamination Certificate

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C290S055000

Reexamination Certificate

active

07352075

ABSTRACT:
A method for controlling a rotational speed of a rotor having at least one rotor blade, a rotor shaft, and an electrical generator coupled thereto. The method includes controlling a torque of the rotor shaft by controlling a torque of the electrical generator, alternating between changing an angle of pitch of the at least one rotor blade and maintaining the angle of pitch of the at least one rotor blade substantially constant, and maintaining a substantially constant rotational speed of the rotor during variable wind speeds above a predetermined rated wind speed.

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