SEMICONDUCTOR CIRCUIT BREAKER AND CIRCUIT BREAKING DEVICE
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Applicant
Mitsubishi Electric Corporation
Representative
Ole Trinks
Application number
EP18927476A1
Kind
A1
Document number
3829016
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SEMICONDUCTOR CIRCUIT BREAKER AND CIRCUIT BREAKING DEVICE

3829016 - EP18927476A1 - EPO

Application Jul 25, 2018 - Publication Jun 02, 2021

Katsuhiko HORINOUCHI Tsuguhiro TAKUNO Tomoko TAKASUKA Satoshi ISHIKURA Hiroto YUKI

Abstract

Provided are a semiconductor circuit breaker and a circuit breaking device that suppress generation of a surge voltage when a current is cut off using a semiconductor switch controlled to be conductive or non-conductive by a control signal. The semiconductor circuit breaker includes 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. The phase control unit (20) includes an accident detection unit (21) to detect an accident based on a current detected from the AC circuit, a zero point detection unit (22) to detect a current zero point based on the current detected from the AC circuit, and a control signal output unit (23) to output the control signal for setting the semiconductor switch unit (10) to be non-conductive when the accident detection unit (21) detects the accident or when the zero point detection unit (22) detects the current zero point in response to a command to cut off the current.

Description

Claims

Patent References

Patent Publication Date Title
JPS50032461A N/A N/A
JP2013172603A N/A N/A
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