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Analysis of Two-Phase PWM Technique In Inverter AC Drives
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| Author(s) |
S. Halasz; A. Zaharov |
| Abstract |
This paper deals with that kind of two-phase PWMs which inquires the lowest motor harmonic losses.
The different modulation strategies are investigated and two different PWM schemes are suggested.
The accurate and the approached analytical equations of motor voltage harmonics of two modulation
schemes are given and it is shown that these equations provide a good precision of calculations. It is
shown that both PWM schemes produce the same values of harmonic losses, torque ripples and speed
oscillations but with different harmonic content. For the same inverter commutation frequency these
two-phase PWMs produce lower motor harmonic losses than the three-phase ones in the high
fundamental voltage region but the torque and speed ripples of two-phase PWMs are higher than for
three-space vector modulation almost in the whole control region. |
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| Filename: | EPE1999 - PP00610 - Halasz.pdf |
| Filesize: | 333.9 KB |
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| Type |
Members Only |
| Date |
Last modified 2004-03-25 by System |
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