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Patent Searching and Data


Title:
CONVERTER
Document Type and Number:
WIPO Patent Application WO/2019/239469
Kind Code:
A1
Abstract:
A converter (1-1) comprises: a power module (22) having AC terminals (11, 12, 13) that are connected to an AC power supply (3), a DC terminal (14), a DC terminal (15), and a plurality of switching elements; a base drive circuit (27); and a control power supply unit (29). The converter (1-1) also comprises a voltage phase detection unit (24) that, on the basis of the signals flowing to the emitters of the plurality of switching elements connected to the DC terminal (14) or the signals flowing to a ground that serves as a reference potential for the control power supply unit (29), detects the voltage phase of the AC voltage and generates and outputs a phase detection signal that indicates the detected voltage phase. The converter (1-1) also comprises a base drive signal generation unit (26) that generates a drive signal for controlling the on-off operation of the plurality of switching elements on the basis of the phase detection signal.

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Inventors:
HAYASHI YOSHITOMO (JP)
KOZUKA SATORU (JP)
Application Number:
JP2018/022280
Publication Date:
December 19, 2019
Filing Date:
June 11, 2018
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02M7/12
Foreign References:
JP2008061322A2008-03-13
JP2008301579A2008-12-11
Attorney, Agent or Firm:
TAKAMURA, Jun (Sakai International Patent Office, Toranomon Mitsui Building 8-1, Kasumigaseki 3-chome, Chiyoda-k, Tokyo 13, 〒1000013, JP)
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