A fuzzy MPPT method for PV array in power system

Based on fuzzy control algorithm, an improved fuzzy MPPT method is proposed. The online parameter tuning makes the output power of PV array tracking the maximum power point quickly and steadily by resetting duty ratio of the switching element. Single point membership function has been used to reduce calculation. The availability of the proposed controller is testified by the simulations. The proposed method can restrain the oscillation of output power value. Comparing with the calculating maximum theoretical, the value of output power is more accurate than that in traditional methods.