Yan Jiang, and Wei An
High-speed maglev, magnetic density, 3-D force characteristics, damping characteristics
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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