南京理工大学学报（自然科学版）2023，Vol.47Issue(6)：731-739,9.DOI:10.14177/j.cnki.32-1397n.2023.47.06.001
基于补偿饱和电感的开关磁阻电机位置估计方法
Position estimation method of switched reluctance motor based on compensation saturation inductance
摘要
Abstract
In order to solve the problem that the full-period inductance intersection of switched reluctance motor(SRM)is offset due to magnetic circuit saturation,a position sensorless control strategy for SRM is presented based on compensation saturation inductance.Firstly,the full-period inductance of SRM is obtained by pulse injection;secondly,the offset angle of phase inductance intersection under different load conditions is measured off-line,and the cosine sum function is used to fit the relationship between load torque and offset angle;finally,the offset angle to be compensated is calculated by detecting the current load torque value in real time.When the motor enters the inductance saturation working state,the estimation accuracy of rotor position angle is improved by fitting the position intersection of compensation phase inductance.A four phase 8/6-pole SRM is used as a prototype for simulation and experimental analysis.This method does not add new hardware,and the rotor position angle information updates 8 times within one electrical angle cycle,eliminating accumulated errors.关键词
补偿饱和电感/开关磁阻电机/无位置传感器控制/全周期电感/负载转矩Key words
compensation saturation inductance/switched reluctance motor/position sensorless control/full-period inductance/load torque分类
信息技术与安全科学引用本文复制引用
李闯,颜建虎,张鉴捷,季国东,应展烽..基于补偿饱和电感的开关磁阻电机位置估计方法[J].南京理工大学学报（自然科学版）,2023,47(6):731-739,9.基金项目
国家自然科学基金(51607091) （51607091）
