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.
作者
夏洪兵
高辉
顾灿松
赵鹏
尹红彬
Xia Hongbing;Gao Hui;Gu Cansong;Zhao Peng;Yin Hongbin(China Automotive Technology & Research Center Co.,Ltd.,Tianjin 300000;CATARC (Tianjin) Automotive Engineering Research Institute Co.,Ltd.,Tianjin 300000;Tianjin University of Science & Technology,Tianjin 300000)
出处
《汽车技术》
CSCD
北大核心
2019年第5期38-42,共5页
Automobile Technology
关键词
电磁力
模态仿真
模态耦合
振动响应
辐射噪声
Electromagnetic force
Modal simulation
Modal coupling
Vibration response
Radiation noise
