Electromagnetic Fields and Forces in a Linear Induction Motor during Direct Current Braking
Linear induction motors (LIM) find great application in many power transmission systems. Besides the motor operation the performance of the LIM during braking is also very important. The characteristics of LIM have been studied in recent years 1,2,3, but considerably less attention has been paid to the direct current braking (DC braking) performance of LIM. This paper presents the results of the analysis of LIM during DC braking with regard to the influence of the longitudinal end-effect. The relationships describing electromagnetic fields in the individual zones of the motor and forces acting on the secondary have been determined. The influence of the longitudinal end-effect on DC braking characteristics has been discussed.
Unable to display preview. Download preview PDF.
- 1.I. Boldea and S.A. Nasar, Quasi 1-dimensional theory of linear induction motors with half-filled primary endslots, Proc. of IEEE, V.122, No.1, (1975).Google Scholar
- 2.S. Yamamura, Theory of linear induction motors, University Tokyo Press, Tokyo (1978).Google Scholar
- 3.M. Poloujadoff, The theory of linear induction machinery, Clarendon Press, Oxford (1980).Google Scholar
- 4.K. Pieńkowski, Dynamic braking performance of double-sided linear induction motors. Modelling, Simulation and Control, A, AMSE, V.13, No.2, (1987).Google Scholar
- 5.A. Singh, Theory of eddy-current brakes with thick rotating disc, Proc, of IEE, V.124, No.4, (1977).Google Scholar