Title:
POWER CONVERTER AND AIR CONDITIONER USING SAME
Document Type and Number:
WIPO Patent Application WO/2020/183542
Kind Code:
A1
Abstract:
This power converter comprises: a rectifier that rectifies AC voltage supplied from an AC power supply; a smoothing capacitor that smooths the voltage rectified by the rectifier; an inverter section that has a plurality of switching elements and converts DC voltage smoothed by the smoothing capacitor to AC voltage; a load current detector that detects the load current supplied from the inverter section to a load; and a control unit that has a failure detection unit that extracts a feature quantity from the load current of a set period, the feature quantity being the physical quantity obtained from the load current, and the failure detection unit detecting failure of the switching element on the basis of the extracted feature quantity.
Inventors:
YUASA KENTA (JP)
KAMIKURA MAMORU (JP)
MORIMOTO JUNJI (JP)
KAMIKURA MAMORU (JP)
MORIMOTO JUNJI (JP)
Application Number:
PCT/JP2019/009464
Publication Date:
September 17, 2020
Filing Date:
March 08, 2019
Export Citation:
Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02P27/06
Domestic Patent References:
| WO2017109848A1 | 2017-06-29 |
Foreign References:
| JP2002189064A | 2002-07-05 | |||
| JP2005094873A | 2005-04-07 | |||
| JP2012105498A | 2012-05-31 | |||
| JPH08331750A | 1996-12-13 |
Attorney, Agent or Firm:
KISA PATENT & TRADEMARK FIRM (JP)
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