PROJECT TITLE :

Analysis of Torques in Single-Side Linear Induction Motor With Transverse Asymmetry for Linear Metro

ABSTRACT:

Due to the magnetic distortion and nonuniform force density of the only-aspect linear induction motor (SLIM) caused by the lateral movement, edge, and finish effects, three types of torques, i.e., the side, traditional, and horizontal torques, are created. This paper investigates these special torques of the SLIM for metro and the variations of those torques when the first is displaced sideways from a symmetrical position. It's of prime importance to take longitudinal end effects, edge effects, overhang of the first windings, and lateral displacement into consideration when the air-gap flux density distributions and special torques are calculated via a three-D analytical technique. The air-gap flux density distributions along longitudinal and transverse directions, also because the force density and torques with the different lateral displacements, are comprehensively investigated when the motor works within the motoring operation. The analytical results are experimentally validated by measurements on a reciprocal power-fed take a look at rig. It shows that the horizontal and side torques, which increase the instability of the suspension system and also the antirolling bar of bogie, increase nearly linearly with the rise of the lateral displacement. Traditional torque decreases with the increasing lateral displacement.