Pulsed torque control of wind turbine pitch systems

Details Pulsed torque control of wind turbine pitch systems Pulsed torque control of wind turbine pitch systems

2008-03-28

2011-10-18

Look, Edward (Department: 3745)

Fluid reaction surfaces (i.e., impellers)

Method of operation

C416S025000, C416S147000

Reexamination Certificate

active

08038395

ABSTRACT:
A wind turbine pitch control system is disclosed that provides a pulsed torque to the blade pitch actuator if continuous torque fails to adjust the blade pitch angle to a commanded pitch angle. This invention provides a cost-effective way to increase peak torque capability for existing wind turbines that have problems, under certain operating conditions, moving blades per the control command.

REFERENCES:
patent: 4426192 (1984-01-01), Chertok et al.
patent: 7015595 (2006-03-01), Feddersen et al.
patent: 7172392 (2007-02-01), Wastling et al.
patent: 7229250 (2007-06-01), McCallum et al.
patent: 7488155 (2009-02-01), Barbu et al.
patent: 2005/0201862 (2005-09-01), Wastling et al.
patent: 2007/0057516 (2007-03-01), Mever et al.
patent: 2007/0205602 (2007-09-01), Willey et al.

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