永磁同步电机低速域下改进旋转高频注入控制  

Improved rotating high frequency injection control for permanent magnet synchronous motor in low speed domain

作　　者：郭向阳 张爱军[1] Guo Xiangyang;Zhang Aijun(School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China)

机构地区：[1]南京理工大学机械工程学院,南京210094

出　　处：《国外电子测量技术》2023年第11期162-169,共8页Foreign Electronic Measurement Technology

摘　　要：旋转高频注入法常用于永磁同步电机零低速无位置传感器控制系统,但该方法在提取和处理位置信号的过程中用到较多的滤波器,这将会导致获取的位置信息产生误差。窄带宽带通滤波器既可减少滤波器的数量,同时也具有很好的通频特性,可有效地提取到准确的高频位置信息;然后基于正序分量去补偿同步轴系高通滤波器(SFF)对负序分量(含有位置信息)造成的误差;最后结合速度环一阶线性自抗扰控制,去提高该系统的抗扰能力。通过对比改进前后的仿真实验结果,验证了改进后的方法对于转子位置误差补偿有较好的效果,其观测的电机位置精度可达0.015 rad,控制系统在突加负载和转速突变时的抗扰能力也有明显提高。The rotating high-frequency injection method is commonly used in the zero low speed sensorless control system of permanent magnet synchronous motors,but this method uses more filters in the process of extracting and processing position signals,which will lead to errors in the obtained position information.The narrowband broadband pass filter designed in this article not only reduces the number of filters,but also has good passband characteristics,which can effectively extract accurate high-frequency position information.Then,based on the positive sequence component,compensate for the error caused by the synchronous frame high pass filter(SFF)on the negative sequence component(containing position information).Finally,the speed loop first-order linear Active disturbance rejection control is combined to improve the anti-interference ability of the system.By comparing the simulation experimental results before and after the improvement,it was verified that the improved method has a good effect on compensating for rotor position error.The observed motor position accuracy can reach 0.015 rad,and the anti-interference ability of the control system in sudden load and speed changes is also significantly improved.

关 键 词：旋转高频注入法 窄带宽带通滤波器 正序电流分量 自抗扰控制 

分 类 号：TM30[电气工程—电机]