Parameters of parallel three-phase inverters are inevitably different, which causes circulation current among inverters. Circulation current will increase energy loss, distortion of output voltage and current waveform, etc. In order to solve these problems, this paper proposes a control strategy that depresses circulation current by controlling zero sequence duty ratio. In SVPWM-based algorithm of traditional zero-sequence circulation control strategy, it only regulates the operating time once in a carrier cycle, resulting in poor circulation suppressing results. To solve the problem and on the basis of establishing zero-sequence circulated mathematical model, this paper proposes to carry out zero vector operating time twice in a carrier cycle to improve zero-sequence circulation suppressing real-timely, and realize the control scheme of shunt inverter load power adaptive sharing based on the instantaneous power feedback output by each inverter. The method can not only suppress circulation current, realize load sharing, but also can significantly improve output voltage and current waveform of three-phase inverters. The validity of the proposed method is verified by simulation and the semi-physical simulation experiment platform. This work is supported by National Natural Science Foundation of China (No. 61374050).