In view of the poor power sharing of parallel inverters using traditional droop control and the bus voltage and frequency deviation problem in the low-voltage microgrid, the circulating current and power output characteristics of parallel inverters are analyzed, and a control strategy for parallel inverters based controllable equivalent output impedance is proposed. The strategy makes the inverter has a precise controllable equivalent output impedance and has the basic characteristic of the virtual synchronous generator, and the frequency and phase of the equivalent voltage source are capable of self-synchronization function, then it achieves power sharing indirectly without using power ring and has the ability to inhibit the circulating current. It eliminates the bus voltage and frequency deviation problem by designing the secondary voltage regulation control. The simulation results verify the feasibility and effectiveness of the proposed control strategy. This work is supported by Natural Science Foundation of Shanghai (No. 16ZR1413000) and Shanghai Engineering Research Center of Green Energy Grid-connected Technology (No. 13DZ2251900).