INVERTER CIRCUIT AND CONTROL METHOD THEREFOR, AND INVERTER CIRCUIT CONTROL DEVICE

摘要

An inverter circuit and a control method therefor, and an inverter circuit control device. The control method comprises: controlling the connection of a first switch of a first switch group and a fourth switch of a fourth switch group, dividing a current output by the positive electrode of a DC power supply into two paths after the current passes through the first switch and a first inductor, and the two paths of current converging and returning to the negative electrode of the DC power supply through the fourth switch after one path of current passes through a parallel branch and the other path of current passes through a capacitor; and controlling the disconnection of the first switch and the connection of a second diode of a second switch group, and controlling the connection of a second switch of the second switch group so that the second switch is connected at a low voltage. The present invention enables a switch to be connected at a low voltage and/or disconnected at a low current, so that the switch is a soft switch, thereby reducing switch loss and increasing the efficiency of inverter circuits.