The use of parallel three-phase converters has become more popular due to their simplicity, low cost, and expandability. However, the pulse width modulation (PWM) switching of parallel three-phase converters causes circulating current. The circulating current is mainly affected by the zero vectors. This paper proposes a multicarrier PWM for parallel three-phase converters. The multicarrier PWM can synthesize the desired output voltage without using zero vectors. Through the double loop control to realize circulation inhibition, outer ring in the zero sequence component circulation is realized by using no beat; the inner ring uses the carrier to eliminate the effect of zero vector more time, which can get very good restrain circulation. Furthermore, the structures and parameters of current controller are very important for the system’s stability and the output current’s quality in the grid-connected inverter application. The PR controller is used in the current loop which is in the αβ stationary reference frame. This method eliminates the complex coordinate transformation while making the simple calculation. And the method does not need to add additional hardware, which can suppress the circulation current well and have the advantages of quick dynamic response. Finally, simulation and experiment results are presented to prove the validity of the theoretical analysis.