INJECTION MOLDING MACHINE AND POWER SOURCE REGENERATION CONVERTER

摘要

An injection molding machine including a power supply regenerative converter 10 connected between an AC power supply 20 and inverter parts 30 is provided with a electric power conversion part 11 which bidirectionally converts between an AC power and a DC power, a DC voltage detector 15 which detects a DC voltage of a capacitor 14 between the inverter parts 30 and the electric power conversion part 11, and an AC control part 16 which outputs a control signal, which is produced based on a voltage difference between the DC voltage detected by the DC voltage detector 15 and a predetermined voltage, to the electric power conversion part 11, and controls an alternating current flowing between the AC power supply 20 and the electric power conversion part 11.