Abstract: Aiming at the island-type microgrid parallel inverter system,this article analyzes the power distribution characteristics and the circulating current problems caused by the parallel loop,and studies the mechanism of circulating current generation. Based on this,the corresponding mathematical modeling is developed,and an enhanced robust voltage droop control scheme is proposed. The scheme focuses on the improved proportional integral（PI）controller applied to active-voltage（P-E）and reactive-frequency（Q-ω）control,and optimizes system power consumption to reduce bus voltage loss. Also,eliminate the impact of impedance,set up virtual complex impedance to eliminate inductance and increase resistance,so as to achieve the purpose of suppressing the circulation current. Finally using the Matlab/Simulink simulation and the micro-energy network integrated experimental,the proposed control scheme is verified to be reasonable and effective which has theoretical guiding significance for engineering practice