基于死区补偿的PMSM无传感器矢量控制方法  

Based on Dead-time Compensation Sensorless Vector Control Method for PMSM

作　　者：杨立永[1] 翟飞[1] 陈智刚[1] 

机构地区：[1]北方工业大学电气与控制工程学院,北京100144

出　　处：《电气传动》2015年第12期8-11,共4页Electric Drive

基　　金：国家自然科学基金(51207003)

摘　　要：针对永磁同步电机控制系统提出了一种基于死区补偿的无速度传感器控制方法。为获得出色的无传感器低速控制性能,对考虑死区因素的电压源型逆变器输出电压进行了数学建模,随后基于建立的数学模型对逆变器的输出电压进行补偿。最后采用算法简单且鲁棒性好的反电动势法估算永磁电机的转子位置和转速,以达到无传感器控制的目的。该方法消除了转子相位畸变现象,扩大了系统运行范围。实验结果证明了这种控制算法的可行性。Proposed a novel control method about considering the dead-time compensation of the sensorless for thecontrol system of permanent magnet synchronous motor（PMSM）. To derive excellent sensorless control performances inlow speed,a mathematical model for the output voltage of the voltage source type inverter considering the dead zonefactor was established. Then,compensated the output voltage of the inverter using the established mathematical model.Finally,the back EMF method was adopted to estimate rotor position and speed,which has simple algorithm and goodrobustness,achieved the purpose of sensorless-control. This method eliminates the rotor phase distortion phenomenon,expanding the system operating range. Experimental results demonstrate the feasibility of the control algorithm.

关 键 词：永磁同步电机 无传感器 反电动势法 死区补偿 

分 类 号：TM351[电气工程—电机]