定子铁心焊槽对永磁电动机齿槽转矩的影响

摘要

在永磁电动机中经常采用磁极偏移的方式来削弱齿槽转矩,而焊槽的存在却影响了方法的效果.针对一台6极36槽电机,利用有限元方法,分析了焊槽对齿槽转矩的影响,并提出了减小这种影响的方法,有待在实际应用中进一步验证.%For PM motors, magnet shifting is an effective and commonly applied design technique for cogging torque minimization, however, its effect is influenced by the welding slots. Basing on a 6-pole/36-slot PM motor,the welding slots' influence on cogging torque was analyzed by finite element method,and then some measures to minimize this influence were given.