POWER TRANSFORMER FOR HYBRID INDUSTRIAL VEHICLE

摘要

PURPOSE: A power transformer of a hybrid industrial vehicle is provided to secure a space for mounting a charging circuit by installing a switch unit which sets a connection relation between a battery, an ultra capacitor, and a DC-DC converter. CONSTITUTION: A DC-DC converter(43) changes the voltage level of a battery(10). A DC link(44) receives voltages outputted from the DC-DC converter and an ultra capacitor(20) and outputs the voltages to an inverter(30). A switch unit(42) connects the battery to the output terminal of the DC-DC converter and connects the ultra capacitor to the input terminal of the DC-DC converter in an initial charging operation of a hybrid industrial vehicle.