ELECTRIC MOTOR DRIVING DEVICE, AND AIR CONDITIONER

Title:

ELECTRIC MOTOR DRIVING DEVICE, AND AIR CONDITIONER

Document Type and Number:

WIPO Patent Application WO/2024/084679

Kind Code:

A1

Abstract:

An electric motor driving device (100) comprises a three-phase diode bridge (10) that rectifies and converts a three-phase AC voltage into a DC voltage, an electrolytic capacitor (3) that smooths the DC voltage, a DC reactor (30) provided between the three-phase diode bridge (10) and the electrolytic capacitor (3), an inverter (20) that converts the DC voltage smoothed by the electrolytic capacitor (3) into an AC voltage and outputs the AC voltage to a motor (2), a voltage detection unit (40) that detects the DC voltage output by the three-phase diode bridge (10), and an inverter control unit (50) that detects an imbalance state of the three-phase AC voltage on the basis of a DC voltage value, which is a value of the DC voltage detected by the voltage detection unit (40), and controls the inverter (20) on the basis of the result of detecting the imbalance state.

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Inventors:

TAKIGAWA YOHEI (JP)
SHIBATA FUMIAKI (JP)
IKURUMI KAZUSHI (JP)
ONISHI TAKAMASA (JP)

Application Number:

PCT/JP2022/039250

Publication Date:

April 25, 2024

Filing Date:

October 21, 2022

Export Citation:

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Assignee:

MITSUBISHI ELECTRIC CORP (JP)

International Classes:

H02P6/12

Foreign References:

JP2012213264A	2012-11-01
JP2012231673A	2012-11-22