城轨牵引电机温度实时辨识方法研究  

Research on temperature real-time detection method of metro traction motor

作　　者：赵雷廷 刘衎 张自强 许文中 Zhao Leiting;Liu Kan;Zhang Ziqiang

机构地区：[1]中国铁道科学研究院集团有限公司,北京100094 [2]天津一号线轨道交通运营有限公司,天津300350

出　　处：《现代城市轨道交通》2022年第6期32-40,共9页Modern Urban Transit

基　　金：中国铁道科学研究院集团有限公司院基金项目(2020YJ126)。

摘　　要：面向城轨牵引系统中无速度传感器、无温度传感器的异步电机,为实现对其温度监测及过温预警、保护的功能,提出一种与电机控制策略相结合的多模式电机温度实时辨识方法。当牵引变流器处于激活状态时,根据矢量相角跟随器输出的补偿频率或者转矩电流分量调节器输出的补偿频率实时修正电机转子电阻阻值,从而利用阻值与温度之间的关系间接辨识电机温度;当牵引变流器处于封锁状态时,根据异步电机等效热模型完成对电机温度的直接调节。最终通过半实物仿真平台及车辆运行实验证明该温度辨识方法的有效性。Considering the speed-sensorless and temperature-sensorless asynchronous motor control of metro traction system,propose a multimodal motor temperature detection method combined with motor control strategy to achieve temperature monitoring,overheat prewarning and protecting functions.During the active state,the traction system implements rotor resistance corrections according to the compensation frequency derived from the vector phase tracker or torque current vector regulator,therefore the relationship between resistance and temperature is used to detect the motor temperature indirectly;while in the locked state,the traction systems achieve the direct temperature adjustment based on equivalent thermal model of asynchronous motor.Furthermore,the efficacy of the described temperature detection method is proved by a hardware-in-the-loop simulation platform and vehicle operation tests.

关 键 词：城市轨道交通 异步电机 温度辨识 矢量相角跟随器 转矩电流分量调节器 

分 类 号：TM343.2[电气工程—电机]