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标题：减少齿槽转矩的无刷直流电机优化设计 |
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作者：张晓宇，王晓远 |
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| 2013年第1期 访问次数：287次 |
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摘 要：永磁无刷直流电机在各种伺服、驱动系统中应用日益广泛，然而其固有的齿槽转矩引起电机的振动和噪声，并影响到控制的精度。对于永磁无刷直流电机来说，影响齿槽转矩大小的有多种因素，本文对一台永磁无刷直流电机通过选择分数槽绕组，合适的槽极配合及优化极弧系数等方法进行优化设计，优化设计后，齿槽转矩的幅值为原方案的1%左右。结果表明，选择分数槽绕组，合理选取极弧系数和极槽配合，是抑制齿槽转矩比较有效、实用的方法。
关键词：永磁无刷直流电机；齿槽转矩；优化设计；有限元
Abstract: Permanent magnet brushless DC motor are extensively used in Various the system of servo applications at present. However, cogging torque of permanent magnet brushless DC motor may cause nosie and vibration. And affects the control precision. It has many parameters to affect the size of the cogging torque of permanent magnet brushless DC motor. In this paper , suitably selecting the fractional-slot winding , pole-slot combination and pole-arc coefficientand to design a prototype motor． The magnitude of cogging torque in prototype motor is less than 1% that of the original prototype after optimization with proposed method. The results show that the cogging torque of PMBLDCM can be reduced effectively by choosing suitably fractional-slot winding and reasonable pole-arc coefficient , slot-pole combination．
Key words: permanent magnet brushless DC motor；cogging torque；optimization design；finite element method
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