A Non-Sinusoidal Reference Wave for Pwm Ac Drives
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Abstract:
In this paper we propose a suitable reference wave for Pulse Width Modulation (PWM) AC Drives. Staircase reference waves whose levels are calculated to eliminate certain harmonics are studied and a certain staircase reference waveform with L levels is constructed. When L is made very large in limit, this staircase waveform approaches a continuous one which is called Quasine (Quasi + Sine). This approach compared to the classical harmonic elimination method has the advantage that the magnitude of non-triplen harmonics is reduced. A computer program by TURBO PASCAL 6 was developed to enable us to have a comparison between the harmonic contents of output voltage for various reference waveforms.
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Journal title
volume 6 issue 1
pages 25- 36
publication date 1993-02-01
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