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Wind turbine structure
Jan 14, 2017

Engine room, engine room containing the key equipment of wind power generator, including gear box, generator. Maintenance personnel can through wind turbine tower into the cabin. Left side is the wind turbine rotor, the rotor blade and shaft.

Rotor blade: catch the wind, and will transmit to the rotor axis of wind. Modern 600 kw wind turbines, each rotor blade measurement is about 20 meters in length, and the design was very like the wings of the plane.

Axis: the rotor axis of adhere to the low speed shaft of wind turbines.

Low speed shaft: the low speed of a wind turbine shaft axis of the rotor and gear box together. On the modern 600 kw wind turbine, the rotor speed is quite slow, about 19 to 30 revolutions per minute. Shaft in a duct used in hydraulic system, to inspire the operation of the aerodynamic brake.

Gear box, gear box on the left is low speed shaft, its high-speed shaft rotational speed can be increased to 50 times that of the low speed shaft.

High speed shaft and mechanical brake: high speed shaft at 1500 revolutions per minute, and drive the generator. It is equipped with emergency mechanical brake for aerodynamic brake failure, or the wind turbines are maintenance.

Generator, often referred to as induction motor or induction generator. In modern wind turbines, the maximum power output is usually 500 to 1500 kw.

Yaw device: with the help of a motor rotating machinery, in order to make the rotor on the wind. Yaw gear by the electronic controller operation, electronic controller can be an indicator to feel the wind. The wind turbine yaw shown in the figure. Usually, in the wind to change its direction, wind generators will deflect a few degrees in one time.

Electronic controller: contains a computer constantly monitor the state of wind turbines, and yaw control device. In order to prevent any failure (i.e. gear box or generator overheating), the controller can automatically stop the rotation of the wind power generator, and modem by telephone to call wind turbine operator.

Hydraulic system: used to reset the wind turbine aerodynamic brake.

Cooling element: contains a fan for cooling generator. In addition, it contains an oil cooling element, used for cooling oil gear box. Some wind turbine generator with water.

Tower: wind turbine tower with cabin and rotor. Generally high tower has the advantage, because the higher off the ground, the greater the wind speed. Modern 600 mw wind turbine tower for 40 to 60 meters high. It can be for tubular tower, also can be a grid of tower. Tubular tower for maintenance personnel is more safe, because they can through internal ladder to reach the top of the tower. Lattice tower, the advantage is that it is cheaper.

Anemometer and usefulness: used for measuring wind speed and direction

Stern rudder: found in small wind turbines on the horizontal axis wind (usually in 10 kw and below). Located at the rear of rotors, is connected to a solid of revolution. Major role for regulating fan, fan is on the wind. 2 it is in the wind the wind under the condition of the wind turbine handpiece deviates from the direction of the wind, to reduce the speed, protect the fan.