Title:
POWER CONVERSION DEVICE AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2020/053995
Kind Code:
A1
Abstract:
This power conversion device (100) is provided with: a diode bridge (15) for converting a first AC power supplied from a power supply (1) to a DC power; a main circuit capacitor (capacitors (17A, 17B)) for smoothing the DC power; an inverter (19) for converting the DC power after being smoothed to a second AC power to supply the second AC power to a load; capacitors (10, 11) for suppressing noise components contained in the first AC power; and a path switching unit (relays (13, 14, 20) and a control unit (21)) for switching paths for charging the main circuit capacitor so that the current output from the power supply (1) flows into the main circuit capacitor via the capacitors (10, 11) from the start of the supply of the first AC power until the voltage of the main circuit capacitor becomes a predetermined voltage and the current output from the power supply (1) flows into the main circuit capacitor without going through the capacitors (10, 11) after the voltage of the main circuit capacitor has become the predetermined voltage.
Inventors:
YAMAKAWA HIDETOSHI (JP)
Application Number:
PCT/JP2018/033857
Publication Date:
March 19, 2020
Filing Date:
September 12, 2018
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M7/48; H02J3/01
Foreign References:
| JP2008136316A | 2008-06-12 | |||
| JP2000060147A | 2000-02-25 | |||
| JP2017135763A | 2017-08-03 |
Attorney, Agent or Firm:
TAKAMURA, Jun (JP)
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