Analysis of Temperature Field Aggregate Parameters in Traction Permanent Magnet Synchronous Motors Using Thermal Network Method
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 de-magnetization 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 ex-ample,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 reflect-ing the overall heat transfer of the motor.This structure enables the rapid calculation of temperature distribu-tion under different operating conditions,providing valuable insights for the thermal design of the motor.
permanent magnet synchronous traction motorbuilt in V-shapelumped parameter thermal network methodtemperature field
万方数据
维普
