DocumentCode :
974381
Title :
Analysis of the naturally commutated, convertor-fed induction motor drive system using a flux vector method
Author :
Chikwanda, H.S. ; Bolton, H.R.
Author_Institution :
Syst. Dev. Dept., GEC Alsthom Traction Ltd., Manchester, UK
Volume :
140
Issue :
6
fYear :
1993
fDate :
11/1/1993 12:00:00 AM
Firstpage :
401
Lastpage :
415
Abstract :
The paper presents a prediction method for the naturally commutated induction machine drive. Analytical models of the major components of the drive scheme suitable for time-stepping simulation are developed. The adoption of a reference frame for the motor that rotates with the net flux vector enables a full account to be made for the magnetic nonlinearity in the motor´s main flux path. Field-oriented d,q (FODQ) equivalent circuits for the induction machine are deduced. Both the capacitor bank and inverter models are expressed in this FODQ frame to produce compatible two-axis equivalent circuits, switching functions being evolved to represent the inverter tristate switch variables. Models for the DC link inductor and the rectifier, the latter also using switching function concepts, complete the drive system model. The system model is validated through comparison between calculated and test results obtained from an experimental rig
Keywords :
commutation; digital simulation; electric drives; electric machine analysis computing; equivalent circuits; induction motors; invertors; machine theory; power convertors; rectifiers; switching circuits; DC link inductor; capacitor bank; digital simulation; field-oriented d,q equivalent circuits; induction motor drive; inverter; magnetic nonlinearity; main flux path; models; natural commutation; net flux vector; power convertors; rectifier; switching functions; time-stepping simulation; tristate switch variables;
fLanguage :
English
Journal_Title :
Electric Power Applications, IEE Proceedings B
Publisher :
iet
ISSN :
0143-7038
Type :
jour
Filename :
245747
Link To Document :
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