THREE-DIMENSIONAL AIR GAP MAGNETIC DENSITY AND ELECTRONIC FORCE ANALYSIS OF NOVEL BILATERAL LINEAR SYNCHRONOUS MOTOR, 42-47.

Yan Jiang, and Wei An

Keywords

High-speed maglev, magnetic density, 3-D force characteristics, damping characteristics

Abstract

The novel bilateral linear synchronous motor (LSM) is proposed, for high speed maglev train propulsion, suspension and guidance. The bilateral LSM could reduce the large three-dimensional (3-D) force fluctuations of maglev train. Firstly, the topological structure and running principle of the bilateral LSM is introduced. Secondly, the analytical expressions for 3-D magnetic density and 3-D forces of the bilateral LSM are obtained. Finally, the magnetic density and 3-D electromagnetic force characteristics of the bilateral LSM are investigated by finite element analysis. The relevant conclusions are obtained, that the novel bilateral LSM can reduce the 3-D harmonic content in the air gap magnetic density, and effectively reduce the 3-D electromagnetic force fluctuation value when used in an electric type maglev system, ensuring high-speed, stable, safe and reliable operation of the system.

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