Emergency pitch drive power supply

Details Emergency pitch drive power supply Emergency pitch drive power supply

2007-05-15

2007-05-15

Schuberg, Darren (Department: 2834)

Prime-mover dynamo plants

Electric control

Fluid-current motors

C290S055000, C290S00100C, C290S00100C

Reexamination Certificate

active

11421405

ABSTRACT:
An emergency pitch drive power supply is provided, the emergency pitch drive power supply comprising an auxiliary generator for producing electric power, wherein the auxiliary generator is a permanently excited multi-pole generator adapted to generate sufficient power for a pitch drive of a wind turbine when driven with wind rotor speed, and wherein the auxiliary generator is connected to at least one pitch drive motor of the wind turbine.

REFERENCES:
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patent: 6531788 (2003-03-01), Robson
patent: 6921243 (2005-07-01), Canini et al.
patent: 6921985 (2005-07-01), Janssen et al.
patent: 6933625 (2005-08-01), Feddersen et al.

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