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Title:
SEMICONDUCTOR CIRCUIT BREAKER AND CIRCUIT BREAKING DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/021656
Kind Code:
A1
Abstract:
A semiconductor circuit breaker and a circuit breaking device that suppress the generation of a surge voltage when a current is cut off using a semiconductor switch that is controlled to be conductive or non-conductive by a control signal are obtained. A semiconductor switch unit 10 connected to an AC circuit and a phase control unit 20 that controls conduction and non-conduction of the semiconductor switch unit 10 by the control signal are provided. The phase control unit 20 includes an accident detection unit 21 that detects an accident on the basis of the current detected from the AC circuit, and a zero point detection unit 22 that detects a current zero point on the basis of the current detected from the AC circuit, and also includes a control signal output unit 23 that outputs a control signal for making the semiconductor switch unit 10 non-conductive when the accident detection unit 21 detects an accident or receives a command to cut off the current and the zero point detection unit 22 detects a current zero point.

Inventors:
HORINOUCHI KATSUHIKO (JP)
TAKUNO TSUGUHIRO (JP)
TAKASUKA TOMOKO (JP)
ISHIKURA SATOSHI (JP)
YUKI HIROTO (JP)
Application Number:
PCT/JP2018/027901
Publication Date:
January 30, 2020
Filing Date:
July 25, 2018
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORP (JP)
International Classes:
H02H3/08; H03K17/56; H03K17/687
Foreign References:
JPS52151819A1977-12-16
JPS61293115A1986-12-23
JP2003281978A2003-10-03
JP2003289625A2003-10-10
JPS5032461A1975-03-29
JP2013172603A2013-09-02
Other References:
See also references of EP 3829016A4
Attorney, Agent or Firm:
MURAKAMI, Kanako et al. (JP)
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