1
William L Erdman: Variable speed wind turbine with reduced power fluctuation and a static VAR mode of operation. U S Windpower, Blakely Sokoloff Taylor & Zafman, July 6, 1993: US05225712 (222 worldwide citation)

A wind turbine power converter is disclosed herein that smooths the output power from a variable speed wind turbine, to reduce or eliminate substantial power fluctuations on the output line. The power converter has an AC-to-DC converter connected to a variable speed generator that converts wind ener ...


2
Robert D Richardson, William L Erdman: Variable speed wind turbine. U S Windpower, Blakely Sokoloff Taylor & Zafman, January 21, 1992: US05083039 (206 worldwide citation)

A variable speed wind turbine is disclosed comprising a turbine rotor that drives an AC induction generator, a power converter that converts the generator output to fixed-frequency AC power, a generator controller, and an inverter controller. The generator controller uses field orientation to regula ...


3
Mark H Schultz, David J Koenig: Microprocessor based integrated generator set controller apparatus and method. Onan Corporation, Merchant Gould Smith Edell Welter & Schmidt, December 1, 1992: US05168208 (141 worldwide citation)

An electrical generator system integrated controller device utilizing PID control and capable of regulating voltage or current, and frequency simultaneously. The device utilizes a micro-controller (30.1) to monitor the engine generator set (20), then determines the appropriate signal to deliver to t ...


4
Amir S Mikhail, Kevin L Cousineau, Lawrence H Howes, William Erdman, William Holley: Variable speed distributed drive train wind turbine system. Clipper Windpower Technology, Owen L Lamb, May 9, 2006: US07042110 (129 worldwide citation)

A variable speed wind turbine employing a rotor connected to a multiplicity of synchronous generators with wound field or permanent magnet rotors. A passive rectifier and an inverter are used for power transfer back to the grid. A Turbine Control Unit (TCU) commands a required generator torque based ...


5
Eduard Muljadi: Variable speed wind turbine generator with zero-sequence filter. Midwest Research Institute, Ken Richardson, August 25, 1998: US05798632 (120 worldwide citation)

A variable speed wind turbine generator system to convert mechanical power into electrical power or energy and to recover the electrical power or energy in the form of three phase alternating current and return the power or energy to a utility or other load with single phase sinusoidal waveform at s ...


6
Amir S Mikhail, Craig L Christenson, Kevin L Cousineau, William L Erdman, William E Holley: Variable speed wind turbine generator. Zond Energy Systems, Blakely Sokoloff Taylor & Zafman, October 24, 2000: US06137187 (118 worldwide citation)

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 orien ...


7
Joseph F Melley Jr: Mobile electric power generating systems. Melley Energy Systems, Jerold A Jacover, January 30, 1979: US04136432 (112 worldwide citation)

An improved mobile electric power generating system comprising a substantially enclosed trailer for housing a power plant is disclosed. The improvements reside in removable means permitting access to the interior of the trailer enclosure for facilitating improved assembly and maintenance of the powe ...


8
William E Holley: Speed control system for a variable speed wind turbine. U S Windpower, Blakely Sokoloff Taylor & Zafman, February 22, 1994: US05289041 (108 worldwide citation)

A controller and method is disclosed for operating a variable speed turbine to track wind speed fluctuations for high efficiency in conversion of wind energy to electrical energy. The controller of the invention controls the rotor speed in accordance with a wind speed supplied by a wind observer in ...


9
Gregory I Rozman, Albert L Markunas, Paul E Nuechterlein: Starter/generator system with variable-frequency exciter control. Sundstrand Corporation, Marshall O Toole Gerstein Murray & Borum, January 14, 1997: US05594322 (103 worldwide citation)

A control for a brushless generator is operable in a starting mode of operation to convert electrical power into motive power for starting a prime mover. The control applies AC power to an exciter field winding at a first frequency at the initiation of a start sequence and thereafter decreases the f ...


10
Joel Wacknov, Everett R Geis: Distributed power system. Capstone Turbine Corporation, Sterne Kessler Goldstein & Fox P L L C, November 2, 2004: US06812586 (96 worldwide citation)

A power generation system is disclosed. In one embodiment, the power generation system includes a fuel source, a turbogenerator coupled to the fuel source, and a power controller coupled to the turbogenerator. The power controller includes an AC/DC power converter that converts AC power generated by ...



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