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MPPT of Multi-signal Feedforward Doubly-fed Asynchronous Wind Turbine

In this paper, a novel method of Maximum Power Point Tracking(MPPT) for wind turbines based on multi-signal feed forward is proposed. By introducing the additional speed obtained by multi-signal feedforward, the optimal speed is superimposed to the traditional method as the new reference speed of the hybrid system, which improves the response speed and stability of the system. Moreover, Sliding Mode Control(SMC) is combined with signal feedforward. The new sliding mode control rate is used to weaken the power oscillation of the wind turbine to improve the stability of the system. Finally, the simulation results show that the proposed new structure and system are feasible and effective for the wind turbine to maintain its maximum power point.