Sensorless Control of Permanent Magnet Synchronous Motor Based on New Sliding Mode Observer with Single Resistor Current Reconstruction  

作　　者：Qingguo Sun Xiaolei Zhu Feng Niu 

机构地区：[1]IEEE [2]Hebei University of Technology

出　　处：《CES Transactions on Electrical Machines and Systems》2022年第4期378-383,共6页中国电工技术学会电机与系统学报（英文）

摘　　要：To solve the chattering problem caused by discontinuous switching function in traditional sliding mode observer,a piecewise square root switching function with continuously varying characteristics is designed,and its stability is analyzed by using Lyapunov stability criterion.Secondly,according to the relationship among bus current,switching state and phase current,a single bus resistance sampling current reconstruction scheme without current sensors is adopted,which effectively reduces the cost of motor system.Finally,the feasibility and effectiveness of the proposed scheme are verified by simulation.

关 键 词：Permanent magnet synchronous motor New sliding mode observer Phase-locked loop Single resistor Current reconstruction 

分 类 号：TM341[电气工程—电机] TP273[自动化与计算机技术—检测技术与自动化装置]