Semiconductor circuit breaker and circuit breaking device
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United States of America Patent
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Dec 19, 2023
Grant Date -
Aug 26, 2021
app pub date -
Jul 25, 2018
filing date -
Jul 25, 2018
priority date (Note) -
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Abstract
The semiconductor circuit breaker includes a semiconductor switch unit connected to an AC circuit, and a phase control unit that controls conduction and non-conduction of the semiconductor switch unit by the control signal. The phase control unit includes an accident detection unit to detect an accident based on a current detected from the AC circuit, a zero point detection unit to detect a current zero point based on the current detected from the AC circuit, and a control signal output unit to output the control signal for setting the semiconductor switch unit to be non-conductive when the accident detection unit detects the accident or when the zero point detection unit detects the current zero point in response to a command to cut off the current.
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