The power loss of the PWM voltage-fed inverter

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The power loss of the valve devices in pulsewidth-modulated (PWM) inverters operated with relatively high carrier frequency is discussed. The devices covered are bipolar transistors, MOSFETs, and antiparalleled diodes. On-state loss and switching loss are treated separately, on the basis of the control method and the circuit conditions. The resultant allowable load current is discussed from the viewpoint of switching frequency. >

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