Letas Heinz Hermann, Limbeck Volker, Scheibe Klaus, Lehmann Eberhard, Wilmes Thomas, Venker Michael: Lightning protection system for wind turbines. Repower Systems, Stemmann Technik, August 31, 2005: EP1568883-A2 (22 worldwide citation)

The wind energy generator has a propeller (2) driven generator in a housing (4) that is mounted on a pillar (5). The system is protected against lightning strikes (1) by a conductor system (10,11,12) coupled to ground (7). The system uses a slip ring and brush to connect between rotary and stationar ...

Gaudencio A Labrador: Rein-deer kite and its control systems. July 25, 1995: US05435259 (22 worldwide citation)

What has been created is a new device that is used to take benefits from the energy of the high altitude winds for purposes of doing work and to produce usable and storable energy such as electricity, compressed air, etc., without using fuel. This device maybe in the form of an ordinary glider kite ...

Zancai Lucio: (De) Flügel für windturbinen mit vertikaler drehachse, (En) Blade for wind turbines with a vertical rotational axis. Ropatec, Zancai Lucio, OBEROSLER Ludwig, November 27, 2008: WO/2008/141813 (22 worldwide citation)

(EN) The invention relates to a blade for wind turbines with a vertical rotational axis, said blade being supported by a single arm (2), which projects radially from a hub (1) that is mounted to rotate (R) around the vertical axis (A). Said blade has a substantially elliptical linear (3) or hastate ...

Allan P Henderson: Method of forming a perimeter weighted foundation for wind turbines and the like. Jacobson Holman PLLC, January 2, 2007: US07155875 (21 worldwide citation)

A perimeter weighted foundation has a central pier pedestal and an enlarged base spaced outwardly and extending below the pedestal. The enlarged base includes an outer concentric perimeter wall section with a radially extending, disk-shaped spread section interconnecting the bottom of the pedestal s ...

Emilian Mieczyslaw Moroz: Multi-piece wind turbine rotor blades and wind turbines incorporating same. General Electric Company, Armstrong Teasdale, June 3, 2008: US07381029 (21 worldwide citation)

A multisection blade for a wind turbine includes a hub extender having a pitch bearing at one end, a skirt or fairing having a hole therethrough and configured to mount over the hub extender, and an outboard section configured to couple to the pitch bearing.

Shashikanth Suryanarayanan, Aaron Avagliano, Corneliu Barbu: Vibration damping method for variable speed wind turbines. General Electric Company, Fletcher Yoder, September 9, 2008: US07423352 (21 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 ...

Kazuichi Seki, Yoshio Shimizu, Yoshio Kato: Vertical axis wind turbine. Gakko Hojin Tokai University, Koda and Androlia, January 27, 1981: US04247252 (20 worldwide citation)

Wind turbines are largely divided into vertical axis wind turbines and propeller (horizontal axis) wind turbines. The present invention discloses a vertical axis high speed wind turbine provided with a starting and braking control system. This vertical axis wind turbine is formed by having blades of ...

Gregorio Rivas, Iker Garmendia, Josu Elorriaga, Jesus Mayor, Javier Perez Barbachano, David Sole, Jorge Acedo: Reactive power control for operating a wind farm. Ingeteam Energy, Sughrue Mion PLLC, May 12, 2009: US07531911 (19 worldwide citation)

A system and method of reactive power regulation in a wind farm having a plurality of wind turbines that provides optimum control of the reactive power compensation in the wind farm and is able to keep a reactive power reserve in order to support eventual grid contingencies.

Lorenzo Battisti: Anti-icing system for wind turbines. Cesari and McKenna, Patricia A Sheehan, December 29, 2009: US07637715 (19 worldwide citation)

A de-icing and anti-icing arrangement for a Wind Energy Converting System (WECS), a WECS comprising a de-icing and anti-icing arrangement and a method for preventing and eliminating ice accretion on the rotor blades of a WECS are provided. The WECS comprises a tower, a rotor having a plurality of bl ...

Peter Flamang, Marcel De Wilde, Roger Bogaert: Drive assembly for wind turbines. Hansen Transmissions International, Young & Thompson, March 14, 2006: US07011598 (19 worldwide citation)

A drive assembly for a wind turbine includes a rotor hub, a supporting structure, a planetary gear transmission unit having sun, planet and ring gears and a planet carrier. The ring gear is non-rotatably secured to the supporting structure. A main bearing rotatably supports the rotor hub and planet ...

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