一种模拟实测过程的齿槽转矩数值计算方法  

Numerical method for calculating cogging torque by simulation of actual measurement

作　　者：韩力[1] 辛懋[1] 谢红[1] 李辉[1] 魏华[1] 

机构地区：[1]重庆大学电气工程学院输配电装备及系统安全与新技术国家重点实验室,重庆400044

出　　处：《电机与控制学报》2007年第6期589-593,599,共6页Electric Machines and Control

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.

关 键 词：永磁电机 齿槽转矩 电磁场 有限元法 模拟 

分 类 号：TN351[电子电信—物理电子学] TM153[电气工程—电工理论与新技术]