考虑映射误差的电机电磁噪声数值仿真
|
摘要
由于定子等效和电磁力映射准确性对电机多物理场耦合结果影响较大,采用定子结构与电磁力网格节点分布一致的方法建立了定子等效模型,并计算电机电磁辐射噪声。通过麦克斯韦应力张量法计算定子表面电磁力的空间和频率特性,将电磁力与电机模态耦合得出电机表面振动响应,最后通过有限元法计算电机辐射噪声并与测试结果进行对比。对比结果表明,考虑电磁力映射误差的定子等效模型可以提高模型标定精度。
The stator equivalence and the accuracy of electromagnetic force mapping have a great influence on the multi-physical coupling of the motor. The stator equivalent model is established by using the stator structure identical to electromagnetic force mesh node, and the electromagnetic radiation noise of motor is calculated. Firstly, Maxwell stress tensor method was used to calculate the frequency and spatial characteristics of the electromagnetic force on the surface of the stator. Secondly, the electromagnetic force is coupled with the motor modal to calculate the vibration response of the motor surface. Finally, the radiation noise of the motor is calculated by the finite element method and compared with the test results. The comparison results show that the stator equivalent model considering the mapping error of electromagnetic force can improve the calibration accuracy of the model.
The stator equivalence and the accuracy of electromagnetic force mapping have a great influence on the multi-physical coupling of the motor. The stator equivalent model is established by using the stator structure identical to electromagnetic force mesh node, and the electromagnetic radiation noise of motor is calculated. Firstly, Maxwell stress tensor method was used to calculate the frequency and spatial characteristics of the electromagnetic force on the surface of the stator. Secondly, the electromagnetic force is coupled with the motor modal to calculate the vibration response of the motor surface. Finally, the radiation noise of the motor is calculated by the finite element method and compared with the test results. The comparison results show that the stator equivalent model considering the mapping error of electromagnetic force can improve the calibration accuracy of the model.
引文
[1]Yang H D,Chen Y S.Influence of Radial Force Harmonics with Low Mode Number on Electromagnetic Vibration of PMSM[J].IEEE Transactions on Energy Conversion,201429(1):38-45.
[2]唐任远.现代永磁电机设计与理论[M].北京:机械工业出版社,2017:4-12.
[3]左曙光,张耀丹,阎礁,等.考虑定子各向异性的永磁同步电机振动噪声优化[J].西安交通大学学报,2017,51(5)60-68.
[4]贺礼钊,于蓬,章桐.车用永磁同步电机的结构振动分析[J].佳木斯大学学报,2012,30(4):515-518.
[5]郑江,代颖,石坚.车用永磁同步电机的电磁噪声特性[J]电工技术学报,2016(31):53-60.
[6]杨萍,代颖,黄苏荣,等.基于有限元法的车用永磁同步电机电磁噪声的评估[J].电机与控制应用,2012,39(9):33-37.
[7]Gieras J F,Wang C,Lai J C.Noise of Polyphase Electric Motors[M].Boca Raton:CRC Press,2006.
[8]沃德,斯蒂芬,波尔.模态分析理论与试验[M].白化同,郭维忠,译.北京:北京理工大学出版社,2011.
[9]王孚懋,任勇生,韩宝坤.机械振动与噪声分析基础[M]北京:国防工业出版社,2015.
[2]唐任远.现代永磁电机设计与理论[M].北京:机械工业出版社,2017:4-12.
[3]左曙光,张耀丹,阎礁,等.考虑定子各向异性的永磁同步电机振动噪声优化[J].西安交通大学学报,2017,51(5)60-68.
[4]贺礼钊,于蓬,章桐.车用永磁同步电机的结构振动分析[J].佳木斯大学学报,2012,30(4):515-518.
[5]郑江,代颖,石坚.车用永磁同步电机的电磁噪声特性[J]电工技术学报,2016(31):53-60.
[6]杨萍,代颖,黄苏荣,等.基于有限元法的车用永磁同步电机电磁噪声的评估[J].电机与控制应用,2012,39(9):33-37.
[7]Gieras J F,Wang C,Lai J C.Noise of Polyphase Electric Motors[M].Boca Raton:CRC Press,2006.
[8]沃德,斯蒂芬,波尔.模态分析理论与试验[M].白化同,郭维忠,译.北京:北京理工大学出版社,2011.
[9]王孚懋,任勇生,韩宝坤.机械振动与噪声分析基础[M]北京:国防工业出版社,2015.