中文摘要：

设计了一种30槽32极分数槽低速大转矩永磁同步电机（FS-PMSM）,分数槽绕组采用上下左右四层绕线方法,突破了常规的单、双层绕组方法,通过有限元方法对电机电磁转矩进行分析,发现选择合适的槽电势偏移角不但可以增加一定的电磁转矩,而且可以有效减小转矩波动。在综合考虑电机转矩性能和气隙磁密正弦性的基础上,采用钕铁硼永磁与铁氧体永磁相结合的方法,对电机转子磁极结构进行优化,减少了钕铁硼永磁体的用量,降低了电机造价;对空载反电势进行谐波分析,优化后的磁极结构能减少反电势中的谐波含量。对电机进行二维动态仿真,结果表明方案设计合理,能够表现良好的性能,对此类电机设计与优化具有较高的参考价值。

英文摘要：

A fractional slot 32 poles /30 slots low speed and high torque permanent magnetic synchronous motor（ FS-PMSM） is designed,and the fractional slot windings are wound down about four layers,breaking the conventional single and double winding methods. Analyzing the electromagnetic torque by finite element method,it is found that choosing appropriate slot potential offset angle can not only increase the electromagnetic torque to a certain degree and can effectively reduce the torque ripple. Considering the motor torque performance and sinusoidal flux density of air gap,the structure of rotor poles was optimized with the method that combining Nd Fe B and ferrite permanent magnet to reduce the consumption of Nd Fe B. With two permanent magnet materials combined in the rotor,can decrease harmonic components in electromotive force. In the two-dimensional dynamic simulation of motor,the results show that the design is reasonable. It can exhibit good performance,and has a good reference value to the design and optimization of this kind of motor.