THE SWITCHING IGBT DRIVING CONTROL CIRCUIT FOR SUPPLING EQUAL SHARING VOLTAGE TO POWER ELEMENTS AND APPARATUS USING THE SAME

摘要

PURPOSE: A bulk power source switching element drive control circuit and a direct current load device using the same are provided to eliminate an unstable element of a system due to oscillation of a snubber circuit by possessively controlling a switching element and eliminating the snubber circuit. CONSTITUTION: A power supply unit(110) comprises a first partial pressure unit and a second partial pressure unit at both ends of a high voltage direct current power supply. A switching unit(120) comprises a first switching element, a first diode, a second diode. A speed changing unit(130) comprises a secondary coil inducing necessary low voltage from a primary coil. A load power supply unit(140) comprises a rectification bridge circuit which is serially connected with the secondary coil. An inverter(160) is connected with the load power supply unit in order to supply AC voltage to an AC load device(300).