Simulation In Maxwell 2D And Experiment Research On The Linear Induction Motor Of Magnetic Levitation Train

As the tractive drive of Low-Speed magnetic levitation train, Linear induction motor(LIM)affects running performance of the train. In order to improving performance, this paper doesresearch on the characteristic of LIM by finite element method(FEM).FEM as a new numerical calculating method has been adopted in more and more scientificresearch and engineering project,and has been attached more importance for its convenient andadvantages of saving great cost for doing experiments in products designing and testing .Thesoftware Maxwell 2D/3D coming from Ansoft Corp. is one outstanding software in this field.This paper simulates LIM by Maxwell 2D/3D,and it's structure perameter and runningperformance is focused on.This paper mainly reasearch: modeling method of LIM in FEM by Maxwell 2D;Effects onperformance by secondary materials;Effects on performance by slit and frequency of primarycurrent;Relation between airgap and thrust and normal force;Modeling method of LIM in FEMby Maxwell 3D.The design and application of LIM in magnetic levitation train are suggested: the LIMshould be designed with complex secondary and different materials should be selected the rightdepth; appropriate slit, frequency and airgap should be choosed when LIM is running onmagnetic levitation train with different moving status to ensure its efficiency and economizingon energy.In order to test the real LIM, a LIM experiment system is constructed which consists ofLIM mechanical structure, control part and data acquisition part. The test motor is single-sideshort primary core disc type, the core of control part is DSP, and data acquisition part is thecombination of current sensor and force sensor.And the SVPWM algorithm is developed forVVVF control method. The results of the experiments validate the FEM method and conclusionabove.