Abstract: Aiming at the problem of limited output power of the traditional wireless power transfer system（WPT） driven by a single inverter, a high-power WPT system driven by parallel modular multi-inverters（PMMIs） is proposed in this paper. The structure of PMMIs topology and the circulation between the inverter modules are analyzed. In order to solve the inverter parallel circulating current problem, a phase synchronization control method based on a master-slave strategy is proposed. The phase difference between the slave inverter output voltage and the primary current is synchronized with that between the master inverter output voltage and the primary current. A prototype of a WPT driven by three PMMIs has been developed. The experimental results show that at 500 V DC input, the power obtained at the load resistance is about 20 kW, the transmission efficiency reaches 94%, and the output voltage phase of each inverter is achieved which proves the validity of the proposed phase synchronization control method.