This paper describes the practical design and operating principles of the pulsewidth modulated (PWM) inverter. The use of this power circuit in a variable voltage, variable frequency ac motor drive is emphasized. A comparison with the conventional adjustable voltage input inverter is made with respect to input-output characteristics as well as the effect of the unit on the input supply. This paper demonstrates the ability to design and produce a practical system using state of the arts components.
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Penkowski et al. (1972) studied this question.
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