Ground faults in motor drives often caused by winding insulation failure, moisture ingress, or wiring damage can lead to device failure and safety hazards. This paper explores a method of current sensing in the high-side of an integrated half-bridge motor driver to provide direct and immediate detection of phase-to-ground faults. Experimental results from a Motor Phase-to-Ground Short Test results are presented, validating its fault detection capabilities and implications for simplified system design.
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