Modeling of long-stator linear synchronous motors based on winding function

BAO Guang-qing, LIANG Tong-chuan

(College of Electrical and Information Engineering, Lanzhou University of Technology, Lanzhou 730050, China)

Abstract: Aiming at the diffculties of establishing the precise direct synchronous motor mathematical formula, the method of basing on the calculation of the winding function method of long stator linear synchronous motor winding inductance , deducing the formula for the induction parameters of direct motors, and founding the direct synchronous motor model, was proposed. Additionaly, by using the Simulink, the induction parameters the matrix differential equations of direct synchronous motor can be set up with the induction parameters, then the waves of three phase current, magnetic current and magnetic force could be obtained. Finally, a pair polar finite element model resting on the structure of long stator direct synchronous motor can be launched. Giving the three phase current to the stator, direct magnetic current to rotor windings, and proper divisions, the electrical magnetic force can be acquired which will be compared with the result from analytical method.The results indicate that the electrical magnetic pushing force from two methodologies consistent, furthermore the correctness of the method for the direct motor mathematical models depending on the approach of winding function is proved which gives the reference to the future mathematical models of direct motor.