Back to results
US 6,137,187 AGranted
Variable speed wind turbine generator
AssigneeZond Energy Systems, Inc.
InventorsAmir S. Mikhail, Craig L. Christenson, Kevin L. Cousineau, William L. Erdman, William E. Holley
Life of this patent
Estimating the term…
Abstract
A variable speed system for use in systems, such as, for example, wind turbines, is described. The system comprises a wound rotor induction generator, a torque controller and a proportional, integral derivative (PID) pitch controller. The torque controller controls generator torque using field oriented control, and the PID controller performs pitch regulation based on generator rotor speed.
Claims33
A variable speed wind turbine system comprising:
- a wound rotor induction generator;
- a torque controller coupled to the generator to control generator torque using field oriented control;
- and
- a pitch controller coupled to the generator to perform pitch regulation based on generator rotor speed and operating independently of the torque controller.
1 more element
A variable speed system comprising:
- a wound rotor induction generation means for generating power;
- a torque controlling means for controlling generator torque using field oriented control;
- and
- a pitch controlling means for performing pitch regulation based on generator rotor speed and operating independently of the torque controller.
1 more element
A variable speed wind turbine system comprising::
- a wound rotor induction generator;
- a torque controller coupled to the generator to control generator torque using field oriented control;
- and
- a proportional, integral derivative (PID) pitch controller coupled to the generator to perform pitch regulation based on generator rotor speed.
1 more element
Dependencies are inferred from the claim text.