Power converter, short-circuit detecting device thereof and short-circuit detecting method thereof
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United States of America Patent
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Feb 6, 2018
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Apr 16, 2015
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Jun 11, 2014
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Abstract
A short-circuit detecting device includes a coil and a processing circuit. The coil is configured to detect a variation of magnetic flux intensity generated by a current variation of a current flowing through a power semiconductor switch and to generate an induced electromotive force based on the variation of magnetic flux intensity. When the current variation rate of said current is greater than a predetermined value, the processing circuit is configured to generate a short-circuit signal based on the induced electromotive force so as to turn off the power semiconductor switch based on the short-circuit signal.
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