考虑铁损时异步电机的一种串联等效模型  

A series equivalent model of asynchronous motor considering iron loss

作　　者：钱存元 刘宏 胡浩 Qian Cunyuan;Liu Hong;Hu Hao(Institute of Rail Transit,Tongji University,Shanghai 201804)

机构地区：[1]同济大学铁道与城市轨道交通研究院,上海201804

出　　处：《电气技术》2020年第10期1-6,14,共7页Electrical Engineering

基　　金：“十二五”国家科技支撑计划(2015BAG19B02)。

摘　　要：电机在实际运行时,铁损的存在会使转子电流和转子磁通相互干扰,继而使得输出转矩发生偏差,影响控制精度。本文通过分析现有电机铁损电阻并联等效模型和串联等效模型存在的不足,提出了一种异步电机铁损电阻串联模型,推导了该模型在两相静止坐标系下的数学模型,建立了基于S-Function函数的异步电机铁损电阻串联模型仿真系统。通过搭建多电机模型的对比仿真系统,验证了该模型能真实反映电机实际物理过程,具有无需增加计算变量、能快速响应、起动性能好等优点,为电机高效控制提供了一种接近实际电机特性的铁损电阻串联等效模型。The iron loss of induction motor makes the rotor current and rotator flux interrupt each other which causes the output torque to deviate and affects the controlling precision in the actual operation of the motor.A series model of the iron loss resistance of the asynchronous motor is proposed,considering the shortcomings of the parallel equivalent model and series equivalent model of the iron loss resistance of the existing motor.Deduce the mathematical model of asynchronous motor including series iron loss resistance in two-phase stationary frame,and with Simulink establish the simulation model of that.Compared the models with simulations,the simulation results demonstrate that the model with series iron loss resistance is closed to reality of asynchronous motor.The proposed high-efficient model provides a more accurate approximation to actual asynchronous motor with the advantages of no need to increase calculation variables,fast response,and good starting performance.

关 键 词：异步电机 铁损 串联等效模型 仿真建模 

分 类 号：TM343[电气工程—电机]