Abstract
A three-phase inverting apparatus and a control method and a paralleled power conversion system thereof are provided. The control method is suitable for controlling a three-phase inverter having a plurality of switch, a first inductor, a second inductor, and a third inductor. The control method includes following steps: obtaining a dc bus voltage, a plurality of phase voltage, and a plurality of phase current; obtaining inductance of the first, the second, and the third inductors; calculating a plurality of duty ratios, by a division-summation control means, according the dc bus voltage, the phase voltages, current variation of the phase currents, the inductance, and switch period based on sinusoidal pulse width modulation (SPWM); and generating corresponding control signals based on the duty ratios so as to control the switching of the switches.