Prime-mover dynamo plants – Electric control – Fluid-current motors
Reexamination Certificate
2008-07-28
2009-08-11
Ponomarenko, Nicholas (Department: 2834)
Prime-mover dynamo plants
Electric control
Fluid-current motors
C290S052000, C290S053000, C290S054000, C290S055000, C322S029000
Reexamination Certificate
active
07573146
ABSTRACT:
Control features for a wind turbine that control the turbine over a range of wind speeds and under triggering conditions with reduced noise, cost, and reliability issues associated with other such controls. Control is accomplished via control electronics, which adjust the torque produced by the electrical output generation device (e.g., alternator) within the wind turbine. During normal operation, torque is adjusted for optimum aerodynamic performance and maximum output of power. In winds above rated power, the control circuit regulates torque to lower aerodynamic performance, as necessary to maintain desired power level output. In triggering conditions, such as during simultaneous control circuit failure and loss of some portion of the electrical output generation device in extreme winds, wind turbine control is accomplished by increasing torque (e.g., via a separate controller) from the electrical output generation device via shorting of windings, so as to cause retardation of blade rotation.
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Arent & Fox LLP
Mohandesi Iraj A
Ponomarenko Nicholas
Southwest Windpower, Inc.
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