H-BRIDGE INVERTER MODULE AND MULTI LEVEL INVERTER USING H-BRIDGE INVERTER MODULE

摘要

An H-bridge inverter module according to an aspect of the present invention, capable of supplying a control power to the H-bridge inverter module without applying a high voltage, includes a power conversion part which includes power devices and converts AC power into DC power according to the switching operation of the power devices; a gate driver which drives the power devices included in the power conversion part; a DC-DC convertor which supplies the output voltage of a first level as the control power to the gate driver; a capacitor bank which applies an input voltage for turning on the DC-DC convertor to the DC-DC convertor; a sub-power source which supplies the output voltage of the first level as the control power to the gate driver before the DC-DC convertor is turned on; and a control part which connects one of the DC-DC convertor and the sub-power source to the gate driver and supplies the control power to the gate driver.