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 (127 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
Tassilo Pflanz: Maritime power plant system with processes for producing, storing and consuming regenerative energy. Robert W Becker & Associates, August 8, 2000: US06100600 (110 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 ...


4
Christopher W Gabrys: Wind turbine. J Michael Neary, May 9, 2006: US07042109 (109 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 ...


5
William J Mouton Jr, David F Thompson: Airship power turbine. Rollin D Morse, September 4, 1979: US04166596 (109 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
John C McCombs: Machine for converting wind energy to electrical energy. April 9, 1996: US05506453 (108 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 ...


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 (103 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
James Patrick Lyons, Albert Andreas Maria Esser, Paul Scott Bixel: Method and system for wind turbine braking. General Electric Company, Ann M Agosti, Marvin Snyder, May 25, 1999: US05907192 (100 worldwide citation)

Stored rotational energy in an operating variable speed wind turbine is used to pitch blades and brake the wind turbine in the event of utility power grid failure. In one embodiment, a generator IGBT converter and the main power utility grid IGBT converter supply control and pitch servo power during ...