线电压差法无位置传感器BLDCM续流影响的研究  

Research on Freewheeling Interference of Line Voltage Difference Method forSensorless Brushless DC Motor

作　　者：姚绪梁[1] 关琦 赵继成[1] 鲁光旭 王景芳 YAO Xuliang;GUAN Qi;ZHAO Jicheng;LU Guangxu;WANG Jingfang(College of Automation,Harbin Engineering University,Harbin 150001,Heilongjiang,China)

机构地区：[1]哈尔滨工程大学自动化学院,黑龙江哈尔滨150001

出　　处：《电气传动》2020年第4期7-12,共6页Electric Drive

摘　　要：线电压差法无位置传感器无刷直流电机续流过程会导致采样的线电压差通过滤波后发生畸变,使换相信号超前。针对这一问题,从换相期间的续流过程入手,通过分解线电压差信号,分析超前换相的产生机理,并提出了一种无位置传感器无刷直流电机续流影响的补偿策略。仿真与实验结果表明,使用补偿策略的无位置传感器无刷直流电机采样的线电压差信号消除了畸变,实现了无刷直流电机工作在最佳换相时刻换相。Line voltage difference method for sensorless brushless DC motor(BLDCM)freewheeling process will cause the sampled line voltage difference to be distorted after filtering,so that the commutation signal leads.Aiming at this problem,started with the freewheeling process during the commutation process,the generation mechanism of the leading commutation by decomposing the line voltage difference signal was analyzed,and a compensation strategy for the freewheeling effect of the sensorless BLDCM was proposed.The simulation and experimental results show that the line voltage difference signal sampled by the position sensorless BLDCM using the compensation strategy eliminates the distortion and realizes the commutation of the BLDCM at the optimal commutation time.

关 键 词：无位置传感器无刷直流电机 续流 超前补偿 

分 类 号：TM351[电气工程—电机]