大容量推进电机电枢定子建模方法及固有振动特性分析  

Modeling method and natural vibration features analysis of armature stator of large capacity propulsion motor

作　　者：廖琳 向阳[1,2] 周勇 潘鹏程 LIAO Lin;XIANG Yang;ZHOU Yong;PAN Pengcheng(School of Marine and Energy Power Engineering,Wuhan University of Technology,Wuhan 430063,China;Key Laboratory of Transportation Power System in Ship Power System,Wuhan 430063,China;Wuhan Institute of Marine Electric Propulsion,Wuhan 430064,China)

机构地区：[1]武汉理工大学船海与能源动力工程学院,湖北武汉430063 [2]船舶动力系统运用技术交通行业重点实验室,湖北武汉430063 [3]武汉船用电力推进装置研究所,湖北武汉430064

出　　处：《电机与控制学报》2023年第11期173-182,共10页Electric Machines and Control

基　　金：船舶综合电力技术重点实验室基金(6142217190202)。

摘　　要：为避免推进电机在工作时发生共振,需要对推进电机的定子进行模态分析。首先用不同方法对推进电机缩比定子绕组端部建模进行模态仿真计算,以确定合理的简化方法。对推进电机缩比定子与全尺寸定子进行模态分析,二者之间有一定的相似性,并采用机电类比解析法求解了定子和定子-绕组模型的固有频率,与有限元解具有较高的一致性,还分析了定子径向模态对各种参数的敏感性,最后通过对缩比定子进行锤击法模态测试,验证定子有限元分析模型的建立方法和计算方法的有效性。结果表明:推进电机缩比定子绕组采用附加质量法建模更为合理,且缩比定子与全尺寸定子振型存在相似性。此外,采用解析法可以准确有效地得到定子的固有频率;定子径向模态对材料的密度和弹性模量的敏感性较强。In order to avoid resonance of propulsion motor,modal analysis of stator is needed.First of all,different methods were used to carry out modal simulation calculation for the end modeling of the scaled stator winding of the propulsion motor,to determine a reasonable simplified method.The modal a-nalysis of scaled stator and full-size stator of propulsion motor was carried out,showing certain similarity between them.The natural frequencies of stator and stator winding model were solved by electromechani-cal analogy analysis method,which is in good agreement with the finite element solution,and the sensi-tivity of stator radial mode to various parameters was analyzed.Finally,through the modal test of the scaled stator by hammering method,the validity of the stator finite element analysis model and calculation method was verified.The results show that the additional mass method is more reasonable for the model-ing of the scaled stator winding of the propulsion motor,and the vibration modes of the scaled stator and the full-scale stator are similar.In addition,the natural frequency of the stator can be obtained accurately and effectively by using the analytical method;And the radial mode of stator is sensitive to material densi-ty and elastic modulus.

关 键 词：大容量推进电机 电枢定子 建模方法 固有频率 解析法 敏感性分析 

分 类 号：TM351[电气工程—电机]