The Analysis Of Fault Of Long Stator Linear Synchronous Motor

High-speed magnetic levitation rail system is a non-contact operation of the railway system, no wheels, rails, but the use of electromagnetic theory to achieve the suspension of the train, guide and driver. The greatest advantage of high-speed magnetic levitation train is fast, comfortable, safe, maintenance is simple, as a new generation of 21st century land-based rapid transit maglev train, its importance has become increasingly apparent.In the first, the dissertation summarizes the magnetic suspension train simply. Setting off from the characteristic of the magnetic suspension train, it introduces the magnetic suspension technology as well as some relevance knowledge of liner synchronous motor. At the same time, building the mathematic model of the liner synchronous motor with which it simulates the steady state process;Under load condition, research the electromagnetic force along with exciting current, air gap high and the armature electric current changing relations; in stable movement discuss the electromagnetic force long with tator distance changing ; when the motor skids the electromagnetic force along with the inner power factor angle changing; and when maintenance air gap, the exciting current along with the inner power factor angle changing situation;Finally, analysis of short circuit magnetic levitation train, combined with Mtalab short-circuit process simulation software; each side of the stator three-phase short-circuit case and the case of two-phase short circuit, short circuit current with time relations, as well as short-circuit current of the traction and the impact of suspension.