Wind turbine controller method is the mainly control system for preserve and adjust the typical operation for the wind generator. Both will need to take consideration of the wind energy and generator characteristic plus the users? demand and ability to pay, finial to achieve the effects of practical use, dependable and economical.
Commonly, the procedure of wind turbine controller program can be divided as three states, standby state, working state, stopped state.
Standby state. When the wind speed is less than 3m/s, also the power of generator is lower than 10HZ; the wind turbine could not commence given that this condition is out of the setting. At this condition, the wind turbine is rotating automatically, so whatever the wind orientation is, the wind turbine controller won't operate.
Working state. When the wind turbine controller is in the working condition, it's going to real time control the generator information, for example the output voltage, winding speed and temperature to assure stability and operation security under the rated output power. The control approach is often separated as three types. Automatically control, the wind turbine controller automatically orders blade to adjust the optimum position of face the oncoming wind to achieve extra energy. Yaw control, if the wind is too strong, controller directs blade a yew angle to maintain the blade safe. Brake control, if the wind speed reach the upper limit level, then the controller give a stop order directly to avoid the incidents.
Stopped state. If any one of below condition occurred, the wind turbine controller will stop the turbine. For example, detect the wind indicator broken and generator is under overvoltage. Yaw controller has challenge. Electricity net power down. Occured alerting.
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