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Power conversion apparatus, motor drive apparatus including the same, blower including the same, compressor, air conditioner including them, refrigerator, and refrigerator
Power conversion apparatus, motor drive apparatus including the same, blower including the same, compressor, air conditioner including them, refrigerator, and refrigerator
The power conversion device includes a power-supply shunt resistor provided between a negative voltage side of a DC power supply and an inverter and phase lower-arm shunt resistors respectively provided between phase lower-arm switching elements of two arms among three arms and the power-supply shunt resistor. The power conversion device detects voltages between connection points of the phase lower-arm switching elements and the phase lower-arm shunt resistors and a negative voltage side of the DC power supply and calculates, on the basis of detection values of the voltages, phase currents flowing to a load device.
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