基于基波PWM激励的双三相永磁同步电机低速和零速无位置传感器控制  

Position Sensorless Control for Dual Three-Phase Permanent Magnet Synchronous Motor Using Fundamental PWM Excitation Under Low-and Zero-Speed

作　　者：陈浩[1] 高强[1] 朱昊越 CHEN Hao;GAO Qiang;ZHU Haoyue(Department of Electrical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学电气工程系,上海200240

出　　处：《电机与控制应用》2020年第11期1-9,共9页Electric machines & control application

基　　金：国家自然科学基金项目(51477101)。

摘　　要：现有的针对双三相永磁同步电机(PMSM)的无位置传感器算法主要是依靠提取反电动势来估计转速和转子位置,在低速和零速的运行条件下将会失效。研究了一种基于基波脉宽调制(PWM)激励的双三相PMSM无位置传感器算法,在低速和零速运行条件下仍能准确跟踪转子位置。该方法利用双三相电机的数学模型和双三相电机的饱和凸极效应,提取包含在一个PWM周期电流变化率中的转子位置信息,从而实现无传感器控制。通过在仿真环境建立仿真模型验证了该算法的正确性。最后在双三相PMSM试验平台上验证了各种工况下算法的可靠性。Most traditional position sensorless control algorithms for dual three-phase permanent magnet synchronous motors(PMSMs)rely on extracting the back electromotive force(EMF)to estimate rotational speed and rotor position.These algorithms will fail under low-and zero-speed operating conditions.In order to solve this problem,a sensorless algorithm for a dual three-phase PMSM based on fundamental pulse width modulation(PWM)excitation is proposed.The rotor position,even under low-and zero-speed conditions,can be accurately tracked.This method uses the mathematical model of the dual three-phase PMSM and its saturation saliency effect to extract rotor position information contained in the current variation rate during one PWM period,so as to achieve position sensorless control.The correctness of the algorithm is verified in simulation.Finally,the reliability of the algorithm under various operating conditions is verified on a dual three-phase PMSM experimental platform.

关 键 词：双三相永磁同步电机 无位置传感器 饱和凸极效应 低速 

分 类 号：TM351[电气工程—电机]