作者: Mitsuru Tsukima , Hidetoshi Kitanaka
DOI:
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摘要: The disclosed drive control device of an alternating-current motor is provided with: inverter (INV) that has a plurality switching elements are subjected to on/off control, and converts direct-current voltage arbitrary frequency, driving the (6); open contactor (MMK) connected between aforementioned opening/closing-action pre-detection unit (55), detects opening/closing action prior contact/separation main contact, outputs signal; (10A) performs (MMK), also (70) controls on basis signal.