牵引用永磁同步电机温度场集总参数热网络法分析  

Analysis of Temperature Field Aggregate Parameters in Traction Permanent Magnet Synchronous Motors Using Thermal Network Method

作　　者：李克 谢立军 刘钦生 Li Ke;Xie Lijun;Liu Qinsheng(CRRC QINGDAO SIFANG CO.,LTD.,Qingdao,China)

机构地区：[1]中车青岛四方机车车辆股份有限公司,山东青岛

出　　处：《科学技术创新》2024年第6期9-12,共4页Scientific and Technological Innovation

摘　　要：永磁同步牵引电机具有效率高、体积小、功率密度高等优点,在城际铁路运输领域应用越来越多,具有广阔的发展前景。但随着永磁同步牵引电机的单机容量日益增大,其内部损耗也随之不断增加,损耗的增加使得电机的温升不断增加。在高温环境下,永磁体有可能产生退磁等一系列问题,影响牵引电机的稳定安全运行。本文以一台永磁同步牵引电机为例,对电机转子内置转子等较复杂部件进行合理等效,其次使用集总参数热网络法,建立能够反映电机整体热量传递的热网络结构,该结构可快速计算电机不同工况下的温度分布情况,对电机的热设计有一定的帮助。The permanent magnet synchronous traction motor,characterized by high efficiency,compact size,and high power density,is increasingly being employed in the field of intercity railway transportation,exhibiting vast prospects for development.However,with the continuous increase in the individual capacity of permanent magnet synchronous traction motors,internal losses also escalate,resulting in a continuous rise in motor temperature.The elevated temperature,particularly in high-temperature environments,may lead to demagnetization and other related issues in the permanent magnet,consequently affecting the stable and secure operation of the traction motor.In this study,taking a permanent magnet synchronous traction motor as an example,complex components such as the embedded rotor are reasonably equivalent.Subsequently,employing the aggregate parameter thermal network method,we establish a thermal network structure capable of reflecting the overall heat transfer of the motor.This structure enables the rapid calculation of temperature distribution under different operating conditions,providing valuable insights for the thermal design of the motor.

关 键 词：永磁同步牵引电机 内置V型 集总参数热网络法 温度场 

分 类 号：TM341[电气工程—电机]