一种新型磁链滑模观测器的IPMSM无位置传感器最大转矩控制  

Maximum Torque Control of Sensorless IPMSM Based on Flux Linkage Sliding Mode Observer

作　　者：张健 ZHANG Jian(Jiangsu College of Safety Technology,Department of Electrical Engineering,Xuzhou Jiangsu 221011,China)

机构地区：[1]江苏安全技术职业学院电气工程系,江苏徐州221011

出　　处：《装备制造技术》2018年第10期88-94,共7页Equipment Manufacturing Technology

摘　　要：针对传统内置式永磁电机最大转矩电流比控制中存在的磁路饱和、电感误差较大的问题,在分析传统磁链模型的基础上,设计了一种新型的磁链滑模观测器。通过对内置式永磁同步电动机在d-q坐标系上的电压方程进行变换,定义新型磁链模型,并依据新磁链矢量所在轴建立新的旋转直角坐标系。为了实现内置式永磁同步电机最大转矩电流比的控制,在新建的坐标系上借助相位角分析,完成了新定义磁链的控制方程和磁链滑模观测器设计。仿真与实验结果表明:所提出的方法可以获得精度较高的定子磁链观值,对电机电感的变化具有较强的鲁棒抑制能力,可以非常近似地估计最大转矩(MTC)。Aiming at the problems of magnetic saturation and inductance error in the traditional maximum torquecurrent ratio control of built-in permanent magnet motor,a new type of flux linkage sliding mode observer is designed based on the analysis of the traditional flux linkage model.By transforming the voltage equation of the built-in permanent magnet synchronous motor in d-q coordinate system,a new flux model is defined,and a new rotating rectangular coordinate system is established according to the axis of the new flux vector.In order to control the maximum torque-current ratio of the built-in permanent magnet synchronous motor(PMSM),the control equations of the newly defined flux linkage and the design of the flux linkage sliding mode observer are completed in the new coordinate system by means of phase angle analysis.The simulation and experimental results show that the proposed method can obtain high precision stator flux observational values,and has strong robustness to the change of inductance,and can estimate the maximum torque(MTC)very approximately.

关 键 词：内置式永磁电机 无位置传感器 磁链滑模观测器 最大转矩控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]