51
John L Loth: Overspeed control arrangement for vertical axis wind turbines. Schuyler Birch Swindler McKie & Beckett, August 8, 1978: US04105363 (26 worldwide citation)

This invention is an overspeed control arrangement for vertical axis wind turbines employing normally vertically positioned rotor blades, said control arrangement allows the rotor blades to tilt either forward or backwards to form a swept wing configuration, at wind turbine speeds beyond the design ...


52
Svend Erik Hansen: Vessel for transporting wind turbines, methods of moving a wind turbine, and a wind turbine for an off-shore wind farm. Logima v Svend Erik Hansen, Sughrue Mion PLLC, June 26, 2007: US07234409 (25 worldwide citation)

A wind turbine (1) has a base (5) divided into at least three ballast tanks (12). A vessel (7) has means for displacing the wind turbine between a loading space (25) and an unloading position (26). At its unloading position the vessel has winches (11) with at least three flexible lines (10) that can ...


53
Cheng Ting Hsu: Tornado type wind turbines. Iowa State University Research Foundation, Zarley McKee Thomte Voorhees & Sease, June 5, 1984: US04452562 (25 worldwide citation)

A tornado type wind turbine has a vertically disposed wind collecting tower with spaced apart inner and outer walls and a central bore. The upper end of the tower is open while the lower end of the structure is in communication with a wind intake chamber. An opening in the wind chamber is positioned ...


54
Hans L├╝tze, Stefan Rieken, Dietmar Meyer: Wind farm and method for operating same. General Electric Company, Blakely Sokoloff Taylor & Zafman, May 13, 2008: US07372173 (25 worldwide citation)

A wind farm with at least two wind turbines (1, 2, 3, 4) connected to a power grid is provided, said wind farm further comprising a control unit (5) connected to said at least two wind turbines (1, 2, 3, 4), and a sensor unit (6) connected to said power grid and said control unit (5), wherein said s ...


55
Chan Shin: Multi-unit rotor blade system integrated wind turbine. Watson Cole Grindle Watson P L L C, March 2, 1999: US05876181 (24 worldwide citation)

The described wind turbine has a set of propeller type wind force collecting rotor turbines which is comprised of an up-wind auxiliary rotor blade turbine, being disposed on the front end of the combined bevel-planet gear assembly, and a down-wind main rotor blade turbine together with attached exte ...


56
Erik Nim: Wind turbine with floating foundation. Vestas Wind Systems, Stites & Harbison PLLC, Douglas E Jackson, January 2, 2007: US07156586 (24 worldwide citation)

A floating foundation for wind turbines is disclosed, where the foundation essentially comprises at least three submerged buoyancy bodies connected to the lower end of the tower of the wind turbine at a common node member situated well above the surface of the sea. The buoyancy bodies are connected ...


57
Kermit I Harner, Frank R Niessen, Robert Sherman: Blade pitch angle control for large wind turbines. United Technologies Corporation, John Swiatocha, April 7, 1987: US04656362 (24 worldwide citation)

A blade pitch angle control system for a wind turbine includes an improved control means (95) for providing a minimum pitch angle reference signal indicative of desired blade pitch at wind velocities less than rated. The control means includes means (35 and 30) for providing signals indicative of ge ...


58
Aloys Wobben: Wind energy system with adjustment of the sound level. February 10, 2004: US06688841 (24 worldwide citation)

In a method for enabling a wind energy system to stay within noise immission limits, the rotational speed of the turbine rotor is reduced as soon as set values are reached in terms of sound level, wind speed, direction of the wind or time of the day. The second part of the inventive method consists ...


59
Luetze Hans Henning, Rieken Stefan, Meyer Dietmar: Wind farm and method for operating same. Gen Electric, October 13, 2004: EP1467463-A1 (23 worldwide citation)

A wind farm with at least two wind turbines (1, 2, 3, 4) connected to a power grid is provided, said wind farm further comprising a control unit (5) connected to said at least two wind turbines (1, 2, 3, 4), and a sensor unit (6) connected to said power grid and said control unit (5), wherein said s ...


60
Ralph A Morrill: Wind energy metering and recording systems. May 22, 1979: US04155252 (23 worldwide citation)

A system for detecting and metering wind energy and recording the total integrated energy or power levels over any desired period of time. The system emphasizes simplicity of design to achieve: a transducer sensitive to the presence of winds that embodies a means of generating a voltage which is a f ...



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