摘要
针对无刷直流电机无位置传感器换相位置检测存在较大误差的问题,提出了一种基于线电压差分法的无刷直流电机(brushless DC motors,BLDCM)换相误差补偿新方法。利用线电压差值作为反馈量,通过PI调节器确定补偿角度β,因此确定最终的延时角度,利用基于(90°-α)的换相信号补偿策略,最终达到精确换相的目的。仿真验证了该方法可以对转子位置误差进行实时、有效地补偿,提高了电机的性能。
Aiming at the problem of large error in position sensorless commutation position detection of brushless DC motor,a compensation strategy based on(90°-α)commutation signal is proposed.Using the line voltage detection method as the feedback amount,the compensation angleβis determined by the PI regulator,so the final delay angle is determined,and finally the purpose of accurate commutation is achieved.The simulation verifies that the method can compensate the rotor position error in real time and effectively,and improve the performance of the motor.
作者
郭浩
周腊吾
王辉
李飞龙
杨彬佑
GUO Hao;ZHOU Lawu;WANG Hui;LI Feilong;YANG Binyou(School of Electrical and Information Engineering,Changsha University of Science and Technology,Changsha 410114,China;Changde Power Supply Branch of State Grid,Changde 415001,China)
出处
《大电机技术》
2020年第6期10-14,共5页
Large Electric Machine and Hydraulic Turbine
基金
国家自然科学基金(51277013)。
关键词
无刷直流电机
无位置传感器
位置检测
线电压检测
brushless DC motor
no position sensor
position detection
line voltage detection
