Fuzzy feed forward system based on T-S model applied for constant power control in wind power system

Constant power control technology is one of the key technologies in wind power control. PI control is the most widely used technology in constant power control system. Hysteresis of PI control will cause a large overshoot of the output power that will make interference to the power grid. Feedforward control system can reduce the system lag. The fuzzy controller based on T-S model can overcome the influence caused by non-linear and uncertain mathematical model of the system. The fuzzy controller makes the feedforward controller easy to realize. Introducing neural network training method into Fuzzy control will greatly simplify the design of fuzzy controller. Based on Neural Adaptive - Fuzzy technology, a feed forward system is proposed in this paper, which is able to timely adjust pitch angle according to changes of wind speed. At last, the control strategy is simulated by MATLAB. The simulation results show that the method greatly improves the performance of system dynamic response, thus ensuring a constant power output.