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  2. Small wind turbine - Wikipedia

    en.wikipedia.org/wiki/Small_wind_turbine

    In the United States, residential wind turbines with outputs of 2–10 kW typically cost between US$12,000 and US$55,000 installed (US$6 per watt), although there are incentives and rebates available in 19 states that can reduce the purchase price for homeowners by up to 50 percent, to $3 per watt. [25]

  3. Wind turbine - Wikipedia

    en.wikipedia.org/wiki/Wind_turbine

    Small wind turbines may be as small as a fifty-watt generator for boat or caravan use. Hybrid solar- and wind-powered units are increasingly being used for traffic signage, particularly in rural locations, since they avoid the need to lay long cables from the nearest mains connection point. [ 93 ]

  4. Tip-speed ratio - Wikipedia

    en.wikipedia.org/wiki/Tip-speed_ratio

    The power coefficient, , expresses what fraction of the power in the wind is being extracted by the wind turbine. It is generally assumed to be a function of both tip-speed ratio and pitch angle. Below is a plot of the variation of the power coefficient with variations in the tip-speed ratio when the pitch is held constant:

  5. Vertical-axis wind turbine - Wikipedia

    en.wikipedia.org/wiki/Vertical-axis_wind_turbine

    The world's tallest vertical-axis wind turbine, in Cap-Chat, Quebec Vortexis schematic Vertical axis wind turbine offshore. A vertical-axis wind turbine (VAWT) is a type of wind turbine where the main rotor shaft is set transverse to the wind while the main components are located at the base of the turbine. This arrangement allows the generator ...

  6. Doubly fed electric machine - Wikipedia

    en.wikipedia.org/wiki/Doubly_fed_electric_machine

    This is useful for large variable speed wind turbines, because wind speed can change suddenly. When a gust of wind hits a wind turbine, the blades try to speed up, but a synchronous generator is locked to the speed of the power grid and cannot speed up. So large forces are developed in the hub, gearbox, and generator as the power grid pushes back.

  7. List of wind turbine manufacturers - Wikipedia

    en.wikipedia.org/wiki/List_of_wind_turbine...

    Hitachi (Japan) – acquired the wind turbine business of Fuji Heavy Industries in 2012 [2] Japan Steel Works (Japan) Machine Sazi Arak (Iran) Mingyang Wind Power (China) Mitsubishi Heavy Industries (Japan) Končar (Croatia) Mapna (Iran) Siemens Gamesa Renewable Energy (Germany/Spain) STX Windpower (South Korea / The Netherlands) TECO (Taiwan ...

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