The Simulation Analysis Of Characteristic For The Liner Synchronous Motor

Because of the restriction between mechanical strength and the biggest adhesion caused by rod and gear, the tradition electric locomotive which depends on the rotating machine to actuate is impossible to achieve the very high speed 400km/h. The high speed maglve train can obtain the faster speed more than 400 km/h..The long stator liner synchronous machine is the core technology of the maglve train.Therefore understanding its movement characteristic,it will have the count for much significance.This article mainly completes work including several aspects: according to the finite element principle software to build the physical condition modeling of the long stator liner synchronous motor. In the idling situation of the motor, research the levitating and propulsive electromagnetic force of system changing along with the exciting current, the air gap high. And Maintening levitating force invariable, obtains the exciting current curve along with the air gap; 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; simple discussion electromagnetic force changing in the situations of stator straight and slot socket.According to basic principle of the liner synchronous motor, using the MATLAB/ SIMULINK software development platform, completes liner synchronous motor based on SVPWM the vector control system simulation model establishment; The simulation result indicated the control system has the good dynamic characteristic .Because of the liner motor has the certain difference with the rotating motor structure, for example the liner motor has edge effect and soon, therefore applying the vector control theory in the liner motor waits for the further discussion and research.