Minimization of Torque Ripple in PWM AC Drives

A pulsewidth modulation (PWM) technique is proposed for minimizing the RMS torque ripple in inverter-fed induction motor drives subject to a given average switching frequency of the inverter. The proposed PWM technique is a combination of optimal continuous modulation and discontinuous modulation. T...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 2009-02, Vol.56 (2), p.553-558
Main Authors: Basu, K., Prasad, J., Narayanan, G.
Format: Article
Language:English
Subjects:
Harmonic analysis
harmonic distortion
induction motor drive
Induction motor drives
Mathematical analysis
Modulation
Motor drives
Motors
Optimization
Pulse duration modulation
Pulse inverters
Pulse width modulation
Pulse width modulation inverters
pulsewidth modulation (PWM)
pulsewidth-modulated inverter
Ripples
Space vector pulse width modulation
Switching frequency
Torque
torque pulsation
Vectors (mathematics)
Voltage
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Summary:A pulsewidth modulation (PWM) technique is proposed for minimizing the RMS torque ripple in inverter-fed induction motor drives subject to a given average switching frequency of the inverter. The proposed PWM technique is a combination of optimal continuous modulation and discontinuous modulation. The proposed technique is evaluated both theoretically as well as experimentally and is compared with well-known PWM techniques. It is shown that the proposed method reduces the RMS torque ripple by about 30% at the rated speed of the motor drive, compared to conventional space vector PWM.
ISSN:0278-0046
1557-9948
DOI:10.1109/TIE.2008.2004391