异步牵引电机无速度传感器矢量控制的研究  

Research on Speed Sensorless Vector Control of Asynchronous Traction Motor

作　　者：唐聪 宋君健 孙佳伟 姜涛 TANG Cong;SONG Jun-jian;SUN Jia-wei;JIANG Tao(CRRC Dalian R ＆ D Co.,Ltd.,Dalian 116052,China)

机构地区：[1]中车大连电力牵引研发中心有限公司,辽宁大连116052

出　　处：《电力电子技术》2018年第11期40-42,59,共4页Power Electronics

摘　　要：三相异步牵引电机无速度传感器矢量控制既能保证矢量控制的效果,又能减少由速度传感器对系统稳定性带来的影响,是提高系统可靠性、减小系统体积、降低系统成本的有效途径。以三相异步电机数学模型为基础,详细分析转子反电势与电机同步转速之间的关系。在应用转子反电势得到电机转速估算模型的基础上,增加自适应调节器实现转速的准确估算,利用根轨迹法讨论系统的稳定性。仿真和实验结果表明,自适应反电势法能够准确地估算电机的转速,构建的无速度传感器控制系统具有良好的稳态和动态性能。Speed senseless vector control of three-phase asynchronous traction motor can guarantee the effect of vector control, and reduce the influence of speed sensor on system stability.It is an effective way to improve system reliability,reduce system volume and reduce system cost.Based on the mathematical model of three-phase induction motor, the relationship between rotor back electromotive force and motor synchronous speed is analyzed in detail.On the basis of motor back speed estimation model with rotor hack electromotive force, an adaptive regulator is proposed to esti- mate the speed accurately.Use root locus method to analysis the stability of the system.Simulation and test results show that the adaptive back electromotive force method can accurately estimate the speed of the motor, and the speed sensorless control system has good steady-state and dynamic performance.

关 键 词：无速度传感器 矢量控制 反电势 自适应 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]