面向电机模拟器的永磁同步电机模型研究  

Research on permanent magnet synchronous motor model for electric machine emulator

作　　者：徐保荣 王家慧 梁秀 李琪 王大方[2] XU Bao-rong;WANG Jia-hui;LIANG Xiu;LI Qi;WANG Da-fang(Troops 32184,Beijing 100072,China;Department of Automobile Engineering,Harbin Institute of Technology,Weihai 264209,China)

机构地区：[1]32184部队,北京100072 [2]哈尔滨工业大学(威海)汽车工程学院,山东威海264209

出　　处：《电机与控制学报》2021年第10期78-88,共11页Electric Machines and Control

基　　金：国家自然科学基金(52072098);军内科研项目(LJ2017121);威海市产业技术研究院专项扶持资金(202001PTXM05)。

摘　　要：为提高电机模拟器对实际电机的模拟精度,针对磁饱和、交叉耦合效应和转子磁场谐波3个电机磁特性以及损耗、温升两个电机热特性因素分析永磁同步电机电磁参数变化规律,建立了能够同时体现永磁同步电机磁特性和热特性的变参数磁热耦合电机模型,对比了定参数建模电机模拟器、变参数建模电机模拟器与实际永磁同步电机三者的输出端口特性。根据仿真结果,所用定离散周期的电机离散模型具备良好的模拟精度,电机模拟器电流跟踪算法能够对电机模型输出指令电流进行快速跟踪。实验结果表明,基于所设计变参数建模的电机模拟器相较于实际电机端口特性模拟精度高,且准确性高于基于定参数建模的电机模拟器。变参数建模是高精度电机模拟器发展的正确方向。For the purpose of better simulating the output of actual motor,electromagnetic effects,including magnetic saturation,cross-coupling effects and rotor magnetic field harmonic effects,and thermal effects,including motor losses and temperature rise effects,are analyzed to explore the variation law of e-lectromagnetic parameters of permanent magnet synchronous motor.A variable parameter model that simultaneously reflects the magnetic characteristics and thermal characteristics of permanent magnet synchronous motors was established.The output port characteristics of the fixed parameter model motor emulator,variable parameter model motor emulator and actual permanent magnet synchronous motor were compared.According to the simulation results,the discretization numerical algorithm and resolution step size of the motor model used have good resolution accuracy.The motor model solution results can be effectively tracked by the emulator current closed-loop control strategy.The experimental results show that the emulator based on variable parameter model has a good simulation accuracy for the actual motor port characteristics,and the accuracy is higher than that of the emulator based on the fixed parameter model.It is a good choice for the development of high precision electric machine emulator.

关 键 词：永磁同步电机 电机模拟器 定参数建模 变参数建模 电机控制器 模拟精度 磁热耦合 

分 类 号：TM341[电气工程—电机]