表面-内置混合式永磁同步电机性能与转子参数影响

发布时间：2018-08-20 15:09

【摘要】：为研究表面-内置混合式永磁同步电机表面磁极和内置磁极的作用,采用有限元方法建立该电机仿真模型,通过对其空载特性和负载特性的分析可知该电机的空载特性受表面磁极影响较大,而其负载特性受内置磁极影响较大。进一步以表面-内置混合式永磁同步电机的转矩性能为参考指标,对转子表面磁极、内置磁极以及隔磁桥三部分的参数进行分析。结果表明改变表面磁极参数对改善气隙磁场,减小转矩波动有着较好的效果,而改变内置磁极参数对转矩波动影响较小,但对转矩幅值影响较大。此外受表面磁极的影响,内置磁极两端隔磁桥1处的漏磁随其宽度变化较小,因此可适当放宽隔磁桥1处的宽度,以改善电机转子机械强度,提高电机整体性能。
[Abstract]:In order to study the effect of the surface pole and the built-in pole on the surface of the hybrid permanent magnet synchronous motor (PMSM), the simulation model of the motor is established by using the finite element method (FEM). Through the analysis of its no-load and load characteristics, it can be seen that the no-load characteristic of the motor is greatly affected by the surface magnetic pole, while the load characteristic is greatly affected by the built-in pole. Taking the torque performance of the surface-built-in hybrid permanent magnet synchronous motor as the reference index, the parameters of the rotor surface magnetic pole, the built-in magnetic pole and the magnetic barrier bridge are analyzed. The results show that changing the surface magnetic pole parameters has a better effect on improving the air gap magnetic field and reducing the torque ripple, while changing the built-in magnetic pole parameter has little effect on the torque ripple, but has a great effect on the torque amplitude. In addition, due to the influence of the surface magnetic pole, the magnetic flux leakage at the magnetic barrier bridge 1 at the two ends of the built-in magnetic pole changes little with its width. Therefore, the width of the magnetic barrier bridge 1 can be relaxed appropriately to improve the mechanical strength of the motor rotor and improve the overall performance of the motor.
【作者单位】：河海大学能源与电气学院;江苏省电力公司电力科学研究院国家电网公司电能计量重点实验室;
【基金】：江苏省自然科学基金(BK20160866) 国家自然科学基金(51177039)
【分类号】：TM341

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