DocumentCode
1856793
Title
Harmonic imbalance in asynchronous PWM schemes
Author
Dunford, W.G. ; van Wyk, J.D.
Author_Institution
Dept. of Electr. Eng., British Columbia Univ., Vancouver, BC, Canada
fYear
1991
fDate
24-27 Jun 1991
Firstpage
397
Lastpage
401
Abstract
The harmonic content, both integral and non-integral, of an asynchronous three-phase PWM scheme is analyzed. The effects of both quantization and blanking time are included. It has been shown that in a three-phase inverter with asynchronous modulation the nonintegral harmonic line currents produced form unbalanced sets. The percentage imbalance for a particular order is a function of the harmonic order only. For practical frequency ratios, the absolute amplitude of the current imbalance is small due to the small amplitude of the nonintegral components
Keywords
harmonics; invertors; pulse width modulation; 3-phase invertor; asynchronous 3-phase PWM; blanking time; harmonic imbalance; nonintegral harmonic line currents; quantization time; Artificial intelligence; Blanking; Bridge circuits; Frequency; Harmonic analysis; Pulse modulation; Pulse width modulation; Pulse width modulation inverters; Quantization; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Power Electronics Specialists Conference, 1991. PESC '91 Record., 22nd Annual IEEE
Conference_Location
Cambridge, MA
Print_ISBN
0-7803-0090-4
Type
conf
DOI
10.1109/PESC.1991.162705
Filename
162705
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