Optimal control of wind power hybrid energy storage system

Using energy storage system is an effective measure to compensate wind power fluctuation. Wind power was decomposed into low frequency, sub-high frequency and high frequency. Hybrid storage energy system was used to compensate sub-high frequency and high frequency section. Besides, fuzzy sliding control strategy of hybrid energy storage system was set. Fuzzy controller can eliminate chattering of sliding controller. At last, wind power hybrid energy storage system simulation model was built on MATLAB/SIMULINK. According to step response of control system under disturbance, fuzzy sliding controller is verified to have high immunity performance. What's more, the effectiveness of the hybrid energy storage system controller is verified by the fluctuation range and the state of charge(SOC)of energy storage system.