Longitudinal Dynamic End Effect of Single-Sided Linear Induction Motor for Medium–Low Speed Maglev

The Short Primary Single-sided Linear Induction Motor (SLIM) applied in medium–low maglev vehicle has end effect that will cause a significant reduction of train thrust. This paper analyzes the relationship between the Longitudinal Dynamic End Effect (LDEE) and the speed of SLIM. It is concluded that LDEE increases with the motor speed. The LDEE at motor’s exit area is called tailing effect. We take advantage of the tailing effect between adjacent SLIMs to make the air-gap magnetic field of these motors continuous by adjusting their intervals and excitation phase difference. The several SLIM on the same side of the vehicle is equivalent to a “whole motor” with overall one entry area and one exit area. This method can reduce the resistance of the whole vehicle running at high speed, which can provide a new solution for the design of high-speed SLIM applied in Maglev.