Title:
POWER CONVERSION DEVICE, MOTOR-DRIVING DEVICE, AND REFRIGERATION CYCLE DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/091186
Kind Code:
A1
Abstract:
A power conversion device (1) equipped with a rectifier (130) for rectifying first AC power which is supplied from a commercial power source (110), a capacitor (210) connected to the output end of the rectifier (130), an inverter (310) which is connected to both ends of the capacitor (210), converts power outputted from the rectifier (130) and from the capacitor (210) into a second AC power, and outputs the same to a load which has a motor (314), and a control unit (400) for controlling the operation of the inverter (310) so as to output, from the inverter (310) to the load, the second AC power, which includes pulses which correspond to the pulses of power flowing from the rectifier (130) to the capacitor (210), and minimizing the current flowing to the capacitor (210), wherein the capacitor (210) is not provided with a discharge circuit or an overvoltage protection circuit.
Inventors:
TAKAHARA TAKAAKI (JP)
ARISAWA KOICHI (JP)
UEMURA KEISUKE (JP)
MATSUO HARUKA (JP)
MATSUZAKI KOYO (JP)
ARISAWA KOICHI (JP)
UEMURA KEISUKE (JP)
MATSUO HARUKA (JP)
MATSUZAKI KOYO (JP)
Application Number:
PCT/JP2020/040133
Publication Date:
May 05, 2022
Filing Date:
October 26, 2020
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M7/48
Foreign References:
| JP2019161757A | 2019-09-19 | |||
| JP2002051589A | 2002-02-15 | |||
| JP2011205729A | 2011-10-13 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
Download PDF: