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2. Wind turbine - Wikipedia

   en.wikipedia.org/wiki/Wind_turbine

   Permanent magnets for wind turbine generators contain rare-earth metals such as neodymium (Nd), praseodymium (Pr), terbium (Tb), and dysprosium (Dy). Systems that use magnetic direct drive turbines require greater amounts of rare-earth metals. Therefore, an increase in wind turbine manufacture would increase the demand for these resources.

3. Wind turbine design - Wikipedia

   en.wikipedia.org/wiki/Wind_turbine_design

   An example of a wind turbine, this 3 bladed turbine is the classic design of modern wind turbines Wind turbine components : 1-Foundation, 2-Connection to the electric grid, 3-Tower, 4-Access ladder, 5-Wind orientation control (Yaw control), 6-Nacelle, 7-Generator, 8-Anemometer, 9-Electric or Mechanical Brake, 10-Gearbox, 11-Rotor blade, 12-Blade pitch control, 13-Rotor hub

4. Wind power - Wikipedia

   en.wikipedia.org/wiki/Wind_power

   Wind turbine design is the process of defining the form and specifications of a wind turbine to extract energy from the wind. [181] A wind turbine installation consists of the necessary systems needed to capture the wind's energy, point the turbine into the wind, convert mechanical rotation into electrical power , and other systems to start ...

5. 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.

6. 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 ...

7. Windstar turbine - Wikipedia

   en.wikipedia.org/wiki/Windstar_turbine

   Windstar turbines were invented by Robert Nason Thomas and developed by Wind Harvest International, Inc., formerly the Wind Harvest Company, based in Point Reyes, California. Windstar turbines are operated as Linear Array Vortex Turbine Systems (LAVTS). Each rotor unit has a dual braking system of pneumatic disc brakes and blade pitch. All ...