一种基于线电压差积分的无位置传感器无刷直流电机换相误差检测和校正方法  

Line Voltage Difference Integral Method of Commutation Error Adjustment for Sensorless Brushless DC Motor

作　　者：姚绪梁[1] 林浩 鲁光旭 王景芳 赵继成[1] Yao Xuliang;Lin Hao;Lu Guangxu;Wang Jingfang;Zhao Jicheng(College of Automation Harbin Engineering University,Harbin 150001 China)

机构地区：[1]哈尔滨工程大学自动化学院

出　　处：《电工技术学报》2019年第22期4651-4660,共10页Transactions of China Electrotechnical Society

基　　金：高技术船舶科研计划项目“高性能电动甲板吊机研制”资助

摘　　要：针对无位置传感器无刷直流电机运行时存在换相误差的问题,分析了换相误差角度和线电压差积分值的数学关系,考虑了续流过程对线电压差积分值的影响,在此基础上提出一种基于线电压差积分的无位置传感器无刷直流电机换相误差校正方法。与传统换相补偿方法相比,该方法不需要重新构造电机的虚拟中性点,积分边界容易确定,补偿算法简单。实验结果表明了理论的正确性及所提出的补偿方法的有效性。Regarding the problem that the sensorless brushless DC motor is inaccurate in commutation operation, this paper analyzes the mathematical relationship between the commutation error angle and the integral value of the line voltage difference. The influence of the freewheeling process on the integral value of the line voltage difference is considered. Based on the line voltage difference integral, a sensorless commutation error correction method for brushless DC motor is proposed. Compared with the traditional commutation compensation method, this method does not need to reconstruct the virtual neutral point of the motor, the integral boundary is easy to determine, and the compensation algorithm is simple. The experimental results show the correctness of the theory and the effectiveness of the proposed compensation method.

关 键 词：无刷直流电机 无位置传感器控制 换相误差补偿 线电压差积分 

分 类 号：TM351[电气工程—电机]