Abstract: Open-end winding transformer (OWT) dual-inverter topology has the advantages of multi-level output, high DC voltage utilization, high modulation freedom and easy fault tolerance. It has been widely studied in photovoltaic grid-tied system. When the topology has a common DC bus, there will be the problem of zero sequence current, and the traditional zero sequence current suppression strategy based on 120° decoupled modulation will cause the active power of the two inverters to be unevenly distributed. As a result, it will affect the system performance. Aiming at the above problems, a zero sequence current suppression strategy based on a novel zero sequence voltage elimination space vector modulation strategy was proposed. The proposed modulation strategy only selects the voltage vectors which generates no zero sequence voltage, and the voltage vectors were properly configured to make the output voltage vectors of the two inverters equal in amplitude and 180° out of phase with each other, in addition, the zero vectors' dwell time of the two inverters can be dynamically adjusted to suppress the influence of non-linear factors such as dead time and switches voltage drop. The proposed strategy can effectively suppress the zero sequence current of the system while ensuring that the two inverters are always in power sharing state. At last, the feasibility and effectiveness of the proposed strategy were verified by experiments.