基于数字孪生技术的牵引电机低转矩脉动虚拟控制方法研究  

Research on Virtual Control Method for Low Torque Ripple of Traction Motor Based on Digital Twins Technology

作　　者：杨坤[1] 刘磊[1] 赵夫超[1] YANG Kun;LIU Lei;ZHAO Fuchao(Anqing Vocational&Technical College,Anqing Anhui 246003,China)

机构地区：[1]安庆职业技术学院,安徽安庆246003

出　　处：《长春工程学院学报（自然科学版）》2023年第3期62-67,共6页Journal of Changchun Institute of Technology：Natural Sciences Edition

基　　金：安徽省教育厅2022年度高等学校省级质量工程项目(2022jxzyk029);安徽省教育厅2020年校企双元合作开发项目(tzpy034)。

摘　　要：针对牵引电机存在的高转矩脉动问题,研究了基于数字孪生技术的牵引电机低转矩脉动虚拟控制方法:设备层获取物理实体牵引电机运行数据后,经通信接口将数据传输至数据层存储;软件层调用数据层中的数据,采用Unity 3D软件完成牵引电机由物理实体到虚拟的数字孪生,构建牵引电机虚拟机三维模型,并通过显示层虚拟仿真平台展示虚拟模型及相关数据,操控者从虚拟仿真平台观察、分析虚拟模型及相关数据后,利用连续型定子磁链轨迹的控制方法,在牵引电机转速增加的情况下,通过连续转换定子磁链轨迹来降低牵引电机的转矩脉动,完成牵引电机的低转矩脉动虚拟控制。试验结果表明:构建的牵引电机虚拟机模型与物理机实体结构相同,仿真度较高,可利用以虚控实,降低牵引电机的转矩脉动,消除转矩失控的情况,保障牵引电机的安全运行。Aiming at the problem of high torque ripple in traction motors,a virtual control method for low torque ripple in traction motors based on digital twins technology is studied.The device layer obtains phys-ical entity traction motor operation data,and then transmits the data to the data layer for storage through a communication interface.The software layer calls the data in the data layer and uses Unity 3D software to complete the digital twinning of the traction motor from physical entity to virtual entity.A three-dimen-sional model of the traction motor virtual machine is constructed,and the virtual model and related data are displayed through the display layer virtual simulation platform.After observing and analyzing the virtual model and related data from the virtual simulation platform,the operator uses a continuous stator flux traj-ectory control method to control the traction motor speed as it increases.By continuously converting the stator flux trajectory to reduce the torque ripple of the traction motor,low torque ripple virtual control of the traction motor is achieved.The experimental results show that the virtual machine model of the trac-tion motor constructed has the same physical structure as the physical machine,and has a high degree of simulation.It can be used to reduce torque ripple of the traction motor,eliminate torque loss,and ensure the safe operation of the traction motor through virtual control.

关 键 词：数字孪生技术 牵引电机 低转矩脉动 虚拟控制方法 虚拟机模型 定子磁链轨迹 

分 类 号：TM351[电气工程—电机]