摘要
为了精确计算与有效削弱齿槽转矩,采用数值仿真技术,提出通过模拟齿槽转矩的标准测量过程来计算永磁电机齿槽转矩的方法,其模型考虑了齿槽效应、铁心饱和以及运动、时变电磁场的影响。计算结果和实验结果吻合,表明该方法是正确、有效的。利用该方法对具有不同极槽数配合的9台永磁直流电动机进行了齿槽转矩的有限元计算,并验证了使极数和槽数的最小公倍数达到最大的极槽配合方案可有效削弱齿槽转矩。
For accurate calculation and effective reduction of cogging torques, a new method of the numerical simulation is proposed based on the standard measurement principle of the cogging torque. The model considers the influences of slot opening, core saturation, moving and time - varying electromagnetic filed. The agreement of the calculation results with the measured data shows that this method is correct and effective. The cogging torques of 9 permanent magnet DC motors （PMDCMs） with different matching numbers of poles and slots are calculated by the finite element method. The results explain and Verify that the cogging torque could be reduced obviously when the least common multiple of the numbers of poles and slots reaches the maximum value.
出处
《电机与控制学报》
EI
CSCD
北大核心
2007年第6期589-593,599,共6页
Electric Machines and Control
关键词
永磁电机
齿槽转矩
电磁场
有限元法
模拟
permanent magnet motor
cogging torque
electromagnetic filed
finite element method
simulation
