Liang Deliang1,Lu Junyong1,Feng Xiangyang2
(1.School of Electrical Engineering,Xi'an Jiaotong University,Xi'an 710049,China; 2.Tianjing Nulear Industrial Graduate School of Physics & Chemistry,Tianjing 300180, China)
Abstract:Based on the principle of linear permanent magnet brushless DC motor (LPMBDCM),the simulation model of LPMBDCM was constructed by using the simulation block of Sª²Function in the MATLAB/SIMULINK£®Accounting for the asymmetry of flux chain and back electromotive force caused by end effect,the 2D finite element method(FEM) combined with time stepping and energy perturbation was used to calculate back electromotive force and inductance parameter properly£®The dynamic performance of LPMBDCM are simulated,and the phase current,thrust and velocity curves are presented£®The simulation result gives a very good agreement with the result based on ANSOFT£®The validity of the model was verified and a new way was provided£®
Keywords:linear permanent magnet brushless DC motor;mathematic model;finite element method;simulation