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| Independent variable pitch control based on speed feedback for reducing wind turbine fatigue load |
| College of Electronic and Information Engineering, Tongji University, Shanghai 201800, China |
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Abstract According to the aerodynamic principles, the blade stress situation during the rotation process was analyzed. In order to reduce the fatigue load by wind turbine, a new PID wind turbine individual pitch control method was proposed with speed feedback as compensation angle for each blade. The simulation results show that the new method can keep output power stable and decrease blade vibration speed effectively, and the difference of vibration displacement is reduced to lead to the great reduction of fatigue load by wind turbine. The reliability and the life of wind turbine are improved by the proposed method.
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Received: 17 March 2015
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2016, Vol. 37 
