Thrust Ripple Minimization of Permanent Magnet Linear Synchronous Motor by Optimizing Permanent Magnet Shape and Installing Notch

摘要

In this paper, the techniques to reduce thrustripple are presented in the moving magnet type PMLSM. Through optimizing of PM shape and installing notch, thrust is decreased about 0.8 percent. But, the distortion ratio of thrust is decreased from 1.04 percent to 0.43 percent. Also, the thrust ripple ratio at load angle of 90 deg is decreased from 3.8 percent to 0.72 percent.