Fast calculation of harmonic torque pulsations in a VSI/induction motor drive

The authors present a frequency-domain model for the accurate and efficient prediction of harmonic torque pulsations in three-phase VSI/induction motor drives, which enables rapid consideration to be given to their potentially harmful effects in producing uneven shaft rotation. A detailed analysis i...

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Bibliographic Details
Published in:IEEE transactions on industrial electronics (1982) 1993-12, Vol.40 (6), p.561-569
Main Authors: Abdulrahman, S.M., Kettleborough, J.G., Smith, I.R.
Format: Article
Language:English
Subjects:
Applied sciences
Electrical engineering. Electrical power engineering
Electrical machines
Exact sciences and technology
Frequency domain analysis
Harmonic analysis
Induction motor drives
Performance analysis
Predictive models
Pulse width modulation
Regulation and control
Shafts
Space vector pulse width modulation
Time domain analysis
Torque
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Summary:The authors present a frequency-domain model for the accurate and efficient prediction of harmonic torque pulsations in three-phase VSI/induction motor drives, which enables rapid consideration to be given to their potentially harmful effects in producing uneven shaft rotation. A detailed analysis is provided for both quasi-square wave (QSW) and optimal pulse-width modulated (PWM) modes of switching operation, with the latter technique designed to improve the low-speed drive performance by eliminating low-order harmonic components. A comparison is made with practical results obtained from an experimental 0.56 kW drive and from a comprehensive time-domain model using a numerical solution of the machine equations. It is shown that accurate prediction of the actual performance is provided.< >
ISSN:0278-0046
1557-9948
DOI:10.1109/41.245893