System for detection of a ground fault in a high resistance ground network
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United States of America Patent
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Apr 4, 2017
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Apr 14, 2014
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Oct 9, 2010
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Abstract
A method is provided for detection of a ground fault in a high resistance network in a voltage source power conversion circuit comprising a power converter that converts incoming AC power to DC power applied to a DC bus and an inverter that converts DC power from the DC bus to output AC power. The method includes detecting a midpoint-to-ground voltage between a low side of the DC bus and a ground potential and detecting the presence of a ground fault in a high resistance network based upon the detected midpoint-to-ground voltage.
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