无轴承同步磁阻电机最小二乘法转子位移自检测策略  

Self-sensing Strategy of Rotor Displacement Based on Least Square Method for Bearingless Synchronous Reluctance Motor

作　　者：张汉年[1] 张涛 ZHANG Hannian;ZHANG Tao(School of Electronic Information, Nanjing College of Information Technology,Nanjing 210023,China;Faculty of Automation,Huaiyin Institute of Technology,Huaian Jiangsu 223003,China)

机构地区：[1]南京信息职业技术学院电子信息学院,南京210023 [2]淮阴工学院自动化学院,江苏淮安223003

出　　处：《微电机》2020年第12期94-99,共6页Micromotors

基　　金：江苏省高校“青蓝工程”资助项目(2019);江苏省“六大人才高峰”资助项目(2016-GDZB-009)。

摘　　要：位移传感器是无轴承同步磁阻电机悬浮运行时转子位置闭环可控的关键部件,但装配多个位移传感器阻碍了无轴承同步磁阻电机的低成本实用化和结构简单化,由此提出最小二乘法转子位移自检测(无传感器)策略。基于电机悬浮绕组和转矩绕组的磁链、电压和电流状态方程,重构最小二乘法转子位移检测模型,通过采样两套绕组电压和电流,应用最小二乘递推算法对转子位移进行在线辨识。仿真实验表明,该方法能准确实现无传感器工况下转子位移自检测,检测系统有较强的负载扰动适应性。The displacement sensor is the key part to realize the closed loop control of rotor suspension operation for bearingless synchronous reluctance motor,but the assembly of multiple displacement sensors hinders the low-cost practicality and structure simplification of the motor,so the least square method of rotor displacement self-sensing(sensorless)strategy was proposed.Based on the flux linkage,voltage and current state equations of motor suspension winding and torque winding,building the least square model of rotor displacement detection,by sampling the voltage and current of the motor windings,the recursive least square method was used to identify the rotor displacement online.Simulation experiments show that this method can accurately realize the rotor position self-sensing without sensors,the system has strong load disturbance adaptability.

关 键 词：无轴承电机 递推最小二乘法 位移自检测 

分 类 号：TP272[自动化与计算机技术—检测技术与自动化装置]