中南大学学报（英文版）
中南大學學報（英文版）
중남대학학보（영문판）
JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY(ENGLISH EDITION)
2012年
2期
357-364
,共8页
permanent magnet synchronous motor%barrier%notch%radial magnetic force%cogging torque
The design of notch and barrier was optimized in order to improve the characteristics of constant torque while minimizing the cogging torque that occurs as a result of teeth and slot structure.The barrier was installed in order to minimize the cogging torque and torque ripple by finite clement method (FEM) with a reduced barrier width toward the center of magnetic pole.The position and width of notch,which can offset cogging torque,can be calculated with energy distribution of air-gap using Fourier series.The optimized model demonstrates a 60％ decrease in the cogging torque,a 75.3％ decrease in the torque ripple and a 3％ increase in the operating torque when compared with the basic model.
