NDLI: Harmonic loss comparison of modulating function type PWM techniques for VSI-fed induction motors

Content Provider	IEEE Xplore Digital Library
Author	Sharma, K.K. Tripathi, A.N.
Copyright Year	1996
Description	Author affiliation: Dept. of Electr. Eng., Regional Eng. Coll., Kurukshetra, India (Sharma, K.K.)
Abstract	High frequency operation of modern power semiconductor devices have permitted higher number of switchings per cycle. PWM techniques based on minimization of some undesirable effect of harmonics (harmonic elimination, loss minimization, minimization of speed and torque ripples, etc.) are now restricted to limited applications. Modulating function (MF) type techniques (for which fundamental output voltage is proportional to modulation index) do not need such large tables, and therefore, they are suitable for widespread applications. Search of best modulating signal amongst several competing alternatives has led to the selection of seven of the best known MF techniques for comparison. For all these techniques, four loss factors (adopted from literature) are plotted against fundamental frequency/over constant volts per hertz range. Three of these loss factors are used to extract useful information about total harmonic losses through the method of loss equivalents. On the basis of this information, the different techniques are expressed in the increasing order of their harmonic losses for certain important frequencies. The fourth loss factor indicates the maximum peak current in the switching devices, and therefore, is used for the comparison on this basis. Studies for the seven and ten switchings per quarter cycle show the superiority of two of the techniques over the others. For deciding the better of the two techniques, the comparison need to be extended to higher number of switchings per cycle.
Starting Page	293
Ending Page	299
File Size	738744
Page Count	7
File Format	PDF
ISBN	0780327950
DOI	10.1109/PEDES.1996.539555
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1996-01-08
Publisher Place	India
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Pulse width modulation Induction motors Voltage Frequency Pulse width modulation inverters Torque Harmonic analysis Power engineering and energy Educational institutions Power semiconductor devices
Content Type	Text
Resource Type	Article

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