感应电动机混合坐标变换数学模型及应用研究  

Induction Motor Hybrid Coordinate Transformation Model and Its Application

作　　者：梁艳萍[1] 万银龙 王晨光[1] LIANG Yan-ping;WAN Yin-long;WANG Chen-guang(School of Electrical and Electronic Engineering,Harbin University of Science and Technology,Harbin 150080,China)

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150080

出　　处：《哈尔滨理工大学学报》2018年第5期46-53,共8页Journal of Harbin University of Science and Technology

基　　金：黑龙江省自然科学基金(E2015061)

摘　　要：针对感应电动机的电磁转矩表达式中转子电流与气隙磁通的强耦合问题,采用αβ0变换和MT0变换的混合坐标变换法,使得感应电动机的电磁转矩表达式解耦。推导了混合坐标变换,并给出了感应电动机混合坐标变换数学模型。在混合坐标系和ABC坐标系下分别建立了感应电动机的仿真模型,通过对比仿真结果,验证了感应电动机混合坐标变换数学模型的正确性。在混合坐标变换的应用中,以磁链开环、转速闭环的间接矢量控制仿真系统为例,仿真结果表明感应电动机的定子电流经过混合坐标变换解耦为产生磁场的定子电流分量和产生转矩的定子电流分量,验证了混合坐标变换的有效性。For the strong coupling problem between the rotor current and the air gap flux in the expression of the electromagnetic torque expression of the induction motor,the hybrid coordinate transformation is adopted by theαβ0 transformation and the MT0 transformation,and the electromagnetic torque expression of the induction motor is decoupled.The hybrid coordinate transformation is deduced,and the mathematical model of hybrid coordinate transformation of induction motor is given.The simulation model of the induction motor is respectively established under the hybrid coordinate system and the ABC coordinate system.The mathematical model of the hybrid coordinate transformation in the induction motor is verified by comparing the simulation results.In the application of the hybrid coordinate transformation,the indirect vector control simulation system based on flux linkage open-loop and speed closed loop is taken as an example.The simulation results show that the stator current of the induction motor is decoupled into the stator current component generating the magnetic field and the stator current component generating torque by the hybrid coordinate transformation,so the validity of the hybrid coordinate transformation is verified.

关 键 词：电磁转矩 混合坐标变换 解耦 

分 类 号：TM351[电气工程—电机]