11
Donald A Kelly: Combined high density solar panels and vertical wind turbines. October 10, 1978: US04119863 (67 worldwide citation)

The combined high density solar panels and vertical wind turbines consist of multiple solar panels with closely spaced solar cells on both sides which are supported by an open framework and vertical posts.


12
Amir S Mikhail, Craig L Christenson, Kevin L Cousineau, William L Erdman, William E Holley: Variable speed wind turbine generator. General Electric Company, Blakely Sokoloff Taylor & Zafman, August 22, 2006: US07095131 (65 worldwide citation)

A variable speed system for use in systems, such as, for example, wind turbines, is described. The system comprises a wound rotor induction generator, a torque controller and a proportional, integral derivative (PID) pitch controller. The torque controller controls generator torque using field orien ...


13
Shawn P Lawlor: Wind turbine rotor blade. Advanced Wind Turbines, December 12, 1995: US05474425 (65 worldwide citation)

Horizontal axis, free yaw, self-regulated wind turbines which have strong, lightweight, fatigue resistant, fixed pitch, wood/GRE blades and exhibit superior performance a range of wind speeds. The blades are designed by employing defined inboard, midspan, and outboard airfoil profiles and interpolat ...


14
Ben M Enis, Paul Lieberman: Method and apparatus for using wind turbines to generate and supply uninterrupted power to locations remote from the power grid. J John Shimazaki, August 9, 2005: US06927503 (58 worldwide citation)

The present invention relates to a wind energy generating and storing system comprising methods and apparatuses for providing energy dedicated for immediate use and energy storage, to provide electrical power on an uninterrupted and continous basis, to locations remote from an electrical power grid. ...


15
William L Erdman, Terry M Lettenmaier: Wind farm electrical system. Global EnergyConcepts, William Erdman, John Vanden Bosche, July 4, 2006: US07071579 (57 worldwide citation)

An approach to wind farm design using variable speed wind turbines with low pulse number electrical output. The output of multiple wind turbines are aggregated to create a high pulse number electrical output at a point of common coupling with a utility grid network. Power quality at each individual ...


16
Amir S Mikhail, Craig L Christenson, Kevin L Cousineau, William L Erdman, William E Holley: Variable speed wind turbine generator. General Electric Company, Blakely Sokoloff Taylor & Zafman, January 25, 2005: US06847128 (55 worldwide citation)

A variable speed system for use in systems, such as, for example, wind turbines, is described. The system comprises a wound rotor induction generator, a torque controller and a proportional integral derivative (PID) pitch controller. The torque controller controls generator torque using field orient ...


17
Paul Harvey Hartman: Wind turbine and energy distribution system. February 12, 2008: US07329099 (55 worldwide citation)

A new design of vertical axis wind turbine is disclosed based on a dome structure using dome struts as blades that work in concert to produce rotational motion. The stability and low cost of the new design allows the turbine to function in low wind speed regimes as well as high speed winds that woul ...


18
Lloyd I Biscomb: Multiple wind turbine tethered airfoil wind energy conversion system. Cushman Darby & Cushman, August 25, 1981: US04285481 (54 worldwide citation)

A plurality of wind turbines are supported aloft on the same tethered airfoil which is provided with devices for orienting the wind turbines into the wind. Various ways and devices are described for converting the wind energy into electrical power and for connecting and providing the plural outputs ...


19
Kazuichi Seki, Yoshio Shimizu, Yoshio Kato: Vertical axis wind turbine. Gakko Hojin Tokai University, Koda and Androlia, January 27, 1981: US04247253 (54 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 rotational speed control systems. This vertical axis wind turbine is formed by having blades of a pr ...


20
Lothar L Pohl: Wind-turbines. May 29, 1979: US04156580 (53 worldwide citation)

The invention relates to an energy conversion system for converting kinetic energy possessed by the wind into mechanical energy, using a particular compact design for vertical axis rotors in combination with a specially adapted tower structure.



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