Threephase polebypole model of a linear induction machine
Abstract
This paper develops a stationaryreferenceframe coupled circuit model for a 4pole linear induction machine (LIM), a model similar in nature to the abcphase model used to predict conventional roundrotor machine behavior. A comparison between model predictions and highspeed doublesided LIM data shows that good predictions can be made using equivalentcircuit parameters calculated from machine dimensions. It is shown that the application of the (d, q) transformation slightly degrades the predictions for the machine studied, at the same time halving the computational time. The model derived requires a mathematical lengthening of the machine's primary. It is shown that results are improved when the actual length of the primary is used to calculate coupling coefficients for the model. Since the basic abcphase 4pole machine model is represented by a matrix differential equation of order 15, programming and solution time are relatively short as compared to some other methods.
 Publication:

IEE Proceedings B: Electric Power Applications
 Pub Date:
 March 1980
 Bibcode:
 1980IPEPA.127...68N
 Keywords:

 Computer Aided Design;
 Coupling Circuits;
 Induction Motors;
 Magnetic Poles;
 Rail Transportation;
 Rapid Transit Systems;
 Conformal Mapping;
 Equivalent Circuits;
 Mathematical Models;
 Performance Prediction;
 Run Time (Computers);
 Structural Design;
 Urban Transportation;
 Electronics and Electrical Engineering