DocumentCode
924004
Title
A simple and accurate method of computing average and RMS currents in a three-phase PWM inverter
Author
Thurston, Robert C. ; Legowski, Stanislaw F.
Author_Institution
Dept. of Electr. Eng., Wyoming Univ., Laramie, WY, USA
Volume
8
Issue
2
fYear
1993
fDate
4/1/1993 12:00:00 AM
Firstpage
192
Lastpage
199
Abstract
The design of three-phase pulse-width-modulated (PWM) inverters requires values for the average and RMS currents in the inverter in order to select the right components. A computer-aided investigation of approximate inverter current waveforms indicates that the average and RMS inverter currents are simple functions of a single factor equal to the product of the power factor and the modulation index. These functions are expressed as per-unit equations that are useful not only for designing new inverters, but also for evaluating existing designs
Keywords
invertors; power engineering computing; pulse width modulation; RMS currents; approximate inverter current waveforms; average currents; computer-aided investigation; modulation index; power factor; three-phase PWM inverter; Bridge circuits; Frequency; Insulated gate bipolar transistors; Leg; MOSFETs; Power semiconductor switches; Pulse width modulation; Pulse width modulation inverters; Variable speed drives; Voltage;
fLanguage
English
Journal_Title
Power Electronics, IEEE Transactions on
Publisher
ieee
ISSN
0885-8993
Type
jour
DOI
10.1109/63.223971
Filename
223971
Link To Document