基于相电感非饱和区定位的开关磁阻电机无位置传感器控制方法  

Sensorless Control Method for Switched Reluctance Motors Based on Locations of Phase Inductance Characteristic Points

作　　者：匡斯建 张小平 刘苹[1,2] 张光辉 张铸 Kuang Sijian;Zhang Xiaoping;Liu Ping;Zhang Guanghui;Zhang Zhu(National-Local Joint Engineering Laboratory of Marine Mineral Resources Exploration Equipment and Safety Technology Hunan University of Science and Technology,Xiangtan 411201 China;College of Information and Electrical Engineering Hunan University of Science and Technology,Xiangtan 411201 China)

机构地区：[1]湖南科技大学海洋矿产资源探采装备与安全技术国家地方联合工程实验室,湘潭411201 [2]湖南科技大学信息与电气工程学院,湘潭411201

出　　处：《电工技术学报》2020年第20期4296-4305,共10页Transactions of China Electrotechnical Society

基　　金：长株潭国家自主创新示范区专项(2017XK2303);湘潭市科技专项(CXY-ZD20172001)资助项目。

摘　　要：开关磁阻电机在磁路饱和情况下,其导通相电感会随导通相电流的变化而变化,针对传统相电感法转子位置估算精度受磁路饱和影响大的问题,提出一种基于相电感非饱和区定位的开关磁阻电机无位置传感器控制方法。建立开关磁阻电机的相电感函数,阐述确定相电感非饱和区的方法,提出相电感非饱和区定位点的基本概念并分析其相关特点,研究根据两相邻定位点来估算电机转子位置角度的具体实现方法。最后通过仿真与实验验证了上述方法的可行性。A method for estimating the rotor position angle of a switched reluctance motor is proposed,using two adjacent phase inductance characteristic points.When a switched reluctance motor(SRM)appears magnetic saturation,its conduction phase inductances change with the changing conduction phase currents.The accuracy of estimating rotor position using the traditional phase inductance method is susceptible to the influence of magnetic saturation.Therefore,this paper proposes a sensorless position control method for SRM based on the locations of characteristic phase inductance points.The function is established for the phase inductance of an SRM versus its position.The method for determining the non-saturated section of the phase inductance curve is explained.The concept of the characteristic inductance points is presented,and the realization method of estimating the rotor angle of the motor is analyzed.Finally,the feasibility of the proposed method is verified by simulation and experiment.

关 键 词：开关磁阻电机 电感非饱和区 定位点 位置估算 

分 类 号：TM352[电气工程—电机]