A self-optimizing power control strategy is proposed for frequency-power(F-P)droop type distributed generators(DGs)in island microgrid. The strategy makes full use of the natural coupling characteristic of alternating current microgrid to control DGs without any communication in the microgrid. The proposed control strategy is twofold: a frequency hierarchical control and a frequency tracking control. Its main characteristics are as follows: 1)it suits the F-P droop type DGs; 2)the control strategy can be realized locally

rendering the microgrid centralized controller(MGCC)and communication network unnecessary; 3)it can make DGs share loads according to the equal increment principle(EIP). Simulation results have verified the effectiveness of the proposed control strategy. This work is supported by National Natural Science Foundation of China (No. 51177146)and National High Technology Research and Development Program of China (863 Program) (No. 2015AA050202).