基于一种新型磁链模型开关磁阻电机无位置传感器技术  

Sensorless technology of switched reluctance motor based on a flux model

作　　者：张磊 刘闯[3] 韩守义[3] ZHANG Lei1,2, LIU Chuang3, HAN Shou- yi3(1. School of Electrical and Power Engineering,China University of Mining and Technology,Xuzhou 221116, China;2. School of Electronic Engineering,Nanjing Xiaozhuang University,Nanjing 211171, China;3. College of Automation Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016, Chin)

机构地区：[1]中国矿业大学电气与动力工程学院,江苏徐州221116 [2]南京晓庄学院电子工程学院,江苏南京211171 [3]南京航空航天大学自动化学院,江苏南京210016

出　　处：《电机与控制学报》2018年第7期27-34,共8页Electric Machines and Control

基　　金：国家自然科学基金(51377076);江苏省自然科学基金(BK20151574)

摘　　要：提出一种基于新型指数函数磁链模型的单特征点开关磁阻电机无位置传感器技术。为了使磁链模型能更好地反映开关磁阻电机的饱和性,通过在传统的指数函数磁链模型上进行了改进,增加一个反正切函数修正项,并通过实验样机的实测磁链值,对几种磁链模型进行了拟合对比分析,验证该磁链模型在磁链饱和区具有较高的拟合精度。基于新型指数函数磁链模型,提出一种单特征点位置估计方法,该方法通过实时动态磁链与单特征点位置磁链比较得到该特征点位置的检索脉冲信号,再利用此检索脉冲信号估算出转子速度和位置角。该方法不需要增加额外的硬件,也不需要磁链查表,最后通过实验,验证了所提方法的可行性和正确性。A single feature position estimation method of switched reluctance motor based on an exponential function flux model is presented.In order to make the flux model reflect the saturation of switched reluctance motor,the correction term of arctan function was added to the traditional exponential function flux model,utilizing measured flux Linkage values of experimental prototype,the several flux linkage models were implemented fitting and comparative analysis.It verifies that the exponential function flux model has high fitting precision in flux saturation area.According to the exponential function flux model,the position estimation method was proposed based on the single feature point,and the index pulses of the single feature point position were obtained by comparing the dynamic flux with the feature point position flux.The speed and position angle of the rotor can be estimated based on the single feature point position index pulses.The proposed method is simple,and does not require additional hardware and lookup flux table.Thus the sensorless technology is easy to be implemented.The experimental results verify the validity and correctness of the scheme.

关 键 词：开关磁阻电机 无位置传感器 特征点位置 磁链模型 磁链比较 

分 类 号：TM351[电气工程—电机]