摘要
为了设计一款9槽6极低齿槽转矩的表面式永磁交流同步电动机,首先应用有限元软件分析了电机的磁钢偏心距、极弧系数和定子铁心槽口宽度等参数对齿槽转矩和反电势的影响,分析表明优化设计以上参数可有效削弱永磁交流同步电动机的齿槽转矩。然后分析出齿槽转矩波形的主要谐波分量,选择合适的磁极错移角进一步削弱齿槽转矩。最后通过对样机进行测试,表明该电机齿槽转矩得到了有效削弱。
In order to design a 9 slots and 6 poles surface-mounted permanence-magnet synchronous motor with low cogging torque, influence on the cogging torque and back electromotive force by such parameters as degree of permanent magnet eccentricity, magnet arc co efficiency and width of stator slot opening were analyzed by means of the finite element method. The analysis showed that the optimization of above-mentioned parameters was able to reduce the cogging torque of the permanence-magnet AC synchronous motor significantly. Then, the main harmonic component was found after analyzing the rectangular wave of cogging torque and right skewing angle was selected to reduce the cogging torque further. Through testing the prototype, it proved that the cogging torque was depressed a great deal.
出处
《电机技术》
2013年第1期12-15,共4页
Electrical Machinery Technology
关键词
永磁同步电动机
齿槽转矩
有限元
磁极错移
Permanent magnet synchronous motor Cogging torque Finite element Step skewing
