GENERATOR MOTOR DRIVING DEVICE AND METHOD FOR DISCHARGING CAPACITOR OF GENERATOR MOTOR DRIVING DEVICE

摘要

A generator motor driving device for quickly discharging a capacitor during maintenance and a method for discharging a capacitor of a generator motor driving device. Power is supplied from a capacitor to a generator motor driven by an engine to drive the generator motor the load of which is the operating engine. Until the capacitor voltage lowers to a first voltage, rated constant current control of the generator motor is made. Rated constant voltage control of a step-up transformer is made. After the capacitor voltage lowers to the first voltage and until the capacitor voltage lowers to a second voltage lower than the first one, rated constant current control of the generator motor is made, and voltage control of the step-up transformer is made to maintain the ratio of the step-up transformer output voltage outputted to a driver to the capacitor voltage.