1
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 (127 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 ...


2
Kari Appa: Contra-rotating wind turbine system. Albert W Hilburger, August 21, 2001: US06278197 (101 worldwide citation)

Wind turbine apparatus includes an upright mast with support bearings underlying and rotatably supporting a hub assembly having inner and outer coaxial shafts telescopically related but radially spaced to permit independent rotation about a generally horizontal axis. An armature winding is provided ...


3
Kari Appa: Jet assisted hybrid wind turbine system. December 10, 2002: US06492743 (77 worldwide citation)

Hybrid wind turbine apparatus includes a pair of counter rotating rotors having micro thrusters fitted at tip of each blade of the rotors. An upright mast supports bearings underlying and rotatably supporting a hub assembly having tandemly mounted dual alternators. A first set of rotor is mounted on ...


4
Frank McClintic: Methods and apparatus for advanced wind turbine design. Straub & Pokotylo, Michael P Straub, October 14, 2008: US07436086 (59 worldwide citation)

A wind turbine system includes a variable blade assembly including adjustable sails and wing shaped masts expanding the wind velocity capture envelope. The blade assembly turns a hydraulic pump, which pressurizes fluid and stores the pressurized fluid in a chamber in the support tower. Pressurized f ...


5
Thomas Zambrano, Tyler MacCready, Stel N Walker: Wind turbine system. AeroVironment, Sheppard Mullin Richter & Hampton, August 1, 2006: US07084520 (56 worldwide citation)

Wind turbine system, and related method, is provided that exploits an aerodynamically enhanced wind zone of a structure by aligning a wind turbine generator, and preferably a plurality thereof, along a wall thereof. Each generator includes a structural support, a wind turbine rotor and a generator s ...


6
Haiqing Weng, Robert A Seymour, John D D Atre, Allen M Ritter, Xiaoming Yuan, Renchang Dai, Robert W Delmerico: Method, apparatus and computer program product for injecting current. General Electric Company, Cantor Colburn, September 9, 2008: US07423412 (49 worldwide citation)

Method and apparatus that provide a response to the negative sequence current demands during a disturbance of the grid system connected to power-generating equipment, such as a wind turbine system, provide for tracking components in the grid signal, orienting at least a portion of the signal, and in ...


7
Shashikanth Suryanarayanan, Aaron Avagliano, Corneliu Barbu: Vibration damping system and method for variable speed wind turbines. General Electric Company, Fletcher Yoder, December 18, 2007: US07309930 (49 worldwide citation)

A vibration damping technique for a wind turbine system is described. The wind turbine system includes a vibration damper, which provides a variable signal to control torque produced by a generator of the wind turbine system. The variable signal is based on generator speed and has a first local peak ...


8
Dillyn M Elder: Wind turbine system. Santangelo Law Offices P C, February 20, 2001: US06191496 (46 worldwide citation)

The present invention relates to a wind turbine used to convert wind energy into mechanical energy, more specifically, a long axis type of vertical-axis turbine allowing large columns of air to be harnessed. These devices differ from horizontal-axis (propeller) type windmills which typically rotate ...


9
John Douglas D Atre, Anthony Michael Klodowski, Allen Michael Ritter, David Smith, Robert Gregory Wagoner, Luis Jose Garces, Henning Luetze: System and method for power control in wind turbines. General Electric Company, James E McGinness Esq, Armstrong Teasdale, July 3, 2007: US07239036 (45 worldwide citation)

A system and method for power control in wind turbines are provided. The method includes switching a plurality of switching devices in a power conversion component of the wind turbine system in a normal switching mode to provide power flow through the power conversion component. The method further i ...


10
Otto J M Smith: Wind turbine system. Flehr Hohbach Test Albritton & Herbert, May 18, 1982: US04330714 (42 worldwide citation)

A wind turbine system utilizes a bicycle wheel type turbine having airfoils mounted on various spoke pairs. The vertical yaw axis lies in the horizontal projection of the airfoils to offer better control of the system; for example, automatic stowage in the case of excessive wind is provided since th ...



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