Theories of linear induction motors with completely filled and half filled endslots
Abstract
The basic theories of linear induction motors (LIMs) with completely filled and halffilled primary endslots are developed. The solution of the twodimensional boundaryvalue problem is carried out using the Fouriertransform technique, based on the actual airgap mmf distribution. End effects due to the discrete nature of the windings and the finite length of the stator iron core are taken into account. The theories reveal that the stationary pulsating mmf wave which appears in the air gap of an LIM with completely filled slots, owing to the finite length of its stator iron core, has a very adverse effect on the motor performance. A new theory of compensation for this new type of motor is proposed, based on eliminating the pulsating mmf wave from the motor air gap to improve its performance. A onedimensional theory is also developed as a special case of the twodimensional theory presented. This is achieved by specifying the necessary conditions required to reduce the latter theory to the former.
 Publication:

Institution of Electrical Engineers Proceedings
 Pub Date:
 July 1978
 Bibcode:
 1978IEEP..125..657I
 Keywords:

 Induction Motors;
 Slots;
 Boundary Value Problems;
 Fourier Series;
 Performance Tests;
 Wire Winding;
 Electronics and Electrical Engineering