Maglev Trains Long Stator Linear Synchronous Motor Electromagnetic Characteristics

Further study on Long Stator Linear Synchronous Motor used in the EMS maglev vehicle is presented in this thesis. The paper summarizes the main kinds of maglev vehicle currently and compares the characteristic between them. The EMS maglev vehicle is be studied on emphasis, especially structure and theory of the Long Stator Linear Synchronous Motor and it's draught and control system.Firstly, the levitating and propulsive electromagnetic fields of EMS maglev vehicle is studied by using the Finite element method. The tide of thrust and levitation force varying along under the different running condition is highlighted, and the tide of the thrust and levitation force varying along the some factors, such as excitation current, armature current, power angle and air-gap height. The undulation of the thrust and levitation force due to the influence of the discontinuous of the stator grooves and the material and the corresponding resolvent are also be studied. The parameter can be worked out by used the Finite element method and energy perturbation.Then the simulation model of Long Stator Linear Synchronous Motor is established on the basis of the mathematics model, using the parameter gotten through the formula and the Finite element method respectively, the two kind of tide of thrust and levitation force varying along excitation current, armature current, power angle and air-gap height can be studied, then they are compared with the analytic results studied by the Finite element method and simulation model ?...