Patent Number: 8,872,456

Title: Motor control device

Abstract: A power supplied by an AC power supply is used as an input to a rectifying circuit, and an output of the rectifying circuit is used as an input to a smoothing capacitor having a capacitance of about 1/100 of the capacitance of conventionally used capacitance. The capacitor is provided between a positive electrode node and a negative electrode node located between bus lines of output of rectifying circuit. Diodes constituting a rectifying circuit are connected respectively with phase outputs of an inverter. The rectifying circuit is connected to the negative electrode node through a capacitor. The rectifying circuit is connected such that an electric current flows only in the direction from an output of the inverter to the capacitor. The load is connected in parallel with capacitor.

Inventors: Kameyama; Hiroyuki (Osaka, JP)

Assignee: Sharp Kabushiki Kaisha

International Classification: H02P 6/14 (20060101)

Expiration Date: 2018-10-28 0:00:00