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 (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 ...


2
Phyllis R Heronemus: Offshore wind turbine with multiple wind rotors and floating system. Ocean Wind Energy Systems, July 11, 2006: US07075189 (126 worldwide citation)

A wind energy conversion system optimized for offshore application. Each wind turbine includes a semi-submersible hull with ballast weight that is moveable to increase the system's stability. Each wind turbine has an array of rotors distributed on a tower to distribute weight and loads and to improv ...


3
Christopher W Gabrys: Wind turbine. J Michael Neary, May 9, 2006: US07042109 (108 worldwide citation)

A wind turbine for generating electrical power from wind energy includes a turbine rotor mounted for rotation in wind, and having multiple blades for converting energy in the wind into rotational energy. A generator is coupled with said turbine rotor such that said turbine rotor drives said generato ...


4
John C McCombs: Machine for converting wind energy to electrical energy. April 9, 1996: US05506453 (107 worldwide citation)

A machine for converting wind energy into electrical energy comprising in combination a housing; propellers at the forward and rearward ends of the housing mounted on shafts for rotation upon a common horizontal axis of rotation; post means supporting a central extent of the housing for rotation in ...


5
William J Mouton Jr, David F Thompson: Airship power turbine. Rollin D Morse, September 4, 1979: US04166596 (107 worldwide citation)

Power is mechanically transmitted from a tethered airship carrying wind turbines to electrical generators on the ground at the anchor point of the tether, by the use of endless power-transmission cables bridging between drive sheaves at the turbine wheels and driven sheaves at the generators. Tether ...


6
Tassilo Pflanz: Maritime power plant system with processes for producing, storing and consuming regenerative energy. Robert W Becker & Associates, August 8, 2000: US06100600 (106 worldwide citation)

A maritime power plant system for producing, storing and consuming regenerative energy has a support structure on which energy producing devices for producing a continuous supply of energy by at least two different methods from regenerative energy sources are provided. The regenerative energy source ...


7
James A Browning: Windmills. Browning Engineering Corporation, Whitcomb Clark & Moeser, April 27, 1976: US03952723 (105 worldwide citation)

A system for deriving useful energy from a windmill in which a liquid pump is driven by the windmill. Useful energy is obtained by either a fluid driven generator or a friction heater. The output of the pump and the speed of the windmill are controlled by a constant volume valve in the fluid circuit ...


8
Kari Appa: Contra-rotating wind turbine system. Albert W Hilburger, August 21, 2001: US06278197 (102 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 ...


9
Kermit I Harner, Joseph M Kos, John P Patrick: Wind turbine generator pitch control system. United Technologies Corporation, Donald F Bradley, July 3, 1979: US04160170 (102 worldwide citation)

Wind energy is used to drive a wind turbine, which is in turn connected to an electrical generator to produce electrical power. The pitch angle of the wind turbine blades is controlled in a closed loop manner to maintain either a constant generator speed for isolated power generating stations or whe ...


10
Dan Keith McCoin: Wind energy conversion system. WECS, August 29, 2006: US07098552 (99 worldwide citation)

A wind energy conversion system includes upper and lower wind turbines having counter-rotating blade assemblies supported for rotation about a vertical rotation axis, with each blade assembly carrying a rotor for rotation past a stator to produce an electrical output. The wind turbines are supported ...