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Title:
POWER SUPPLY DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/038830
Kind Code:
A1
Abstract:
This power supply device is provided with: a semiconductor switch (1) to be turned on when a commercial AC power supply (5) is healthy; a first current detector (CT1) including a transformer (10) and detecting AC input current (I1); a second current detector (CT2) including a Hall element (20) and detecting AC output current (I2); and a failure detector (30) which, if detection values from the first and second current detectors (CT1, CT2) do not match each other when the commercial AC power supply (5) is healthy, determines that one of a pair of thyristors (1a, 1b) included in the semiconductor switch (1) has misfired.

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Inventors:
NAKANO TOSHIHIDE (JP)
HINAGATA KAZUHIRO (JP)
Application Number:
PCT/JP2017/029940
Publication Date:
February 28, 2019
Filing Date:
August 22, 2017
Export Citation:
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Assignee:
TOSHIBA MITSUBISHI ELEC IND (JP)
International Classes:
H02H7/20; H02H3/05; H02J9/06
Foreign References:
JPH10126980A1998-05-15
JPH05260645A1993-10-08
JPH0956087A1997-02-25
JP2013024682A2013-02-04
JP2003309925A2003-10-31
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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