Motor control device

Abstract

The invention seeks a motor control device capable of storing its own generated energy and consuming it within its own motor. The motor control device comprises: a converter that converts AC power supplied from an AC power source into DC power and outputs the DC power to a DC link capacitor; an inverter that performs a power operation and a regeneration operation, wherein the power operation converts the DC power in the DC link capacitor into AC power to drive the motor and supplies it to the motor, and the regeneration operation converts the AC power regenerated by the motor into DC power and returns it to the DC link capacitor; and a capacitor module electrically connected to the DC link capacitor; the potential of the capacitor module is related to the potential of the DC link capacitor.

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