Emergency pitch drive unit for a wind turbine

Details Emergency pitch drive unit for a wind turbine Emergency pitch drive unit for a wind turbine

2007-11-28

2010-06-29

Waks, Joseph (Department: 2839)

Prime-mover dynamo plants

Electric control

Fluid-current motors

C290S055000

Reexamination Certificate

active

07745948

ABSTRACT:
An emergency pitch drive unit for a wind turbine comprises: an electrical motor arranged for adjusting the pitch angle of a wind turbine rotor blade; an emergency power supply unit for supplying electrical power to the motor; and a controller configured for controlling, in the event of a power failure. The motor to adjust the pitch angle uses the electrical power from the emergency power supply unit. The emergency power supply unit comprises a fuel cell.

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