摘要
为提高低速运行下的永磁同步电机无位置传感器控制系统的带宽和动态响应性能,在传统高频方波电压注入方法上进行改进,用简单的算术运算提取高频电流分量和基波分量,避免了滤波器的使用;采用矢量交叉乘法解耦位置误差信息,解决了反正切函数求取转子信息对噪声敏感的问题;通过引入三阶的扩张状态位置观测器并改进,进一步提高了系统的观测性能和鲁棒性。基于Simulink搭建仿真模型,结果表明转速环带宽可提高至70 Hz且速度跟随性得到了有效提高,最后在AVL台架搭建实验平台进行了实际验证。
In order to improve the bandwidth and dynamic response performance of sensorless control system of permanent magnet synchronous motor under low-speed operation,the traditional high-frequency square wave voltage injection method is improved.The high-frequency current component and fundamental wave component are extracted by simple arithmetic operation,which avoids the use of filter;The position error information is decoupled by vector cross multiplication method,which solves the problem that the rotor information obtained by arctangent function is sensitive to noise;A third-order extended state position observer is introduced to further improve the robustness of the system.The simulation model is built based on Simulink.The results show that the bandwidth of speed loop can be increased to 70 Hz and the speed following performance has been effectively improved.Finally,the experimental platform is built on AVL bench for practical verification.
作者
王淑旺
李晶晶
王涛
WANG Shu-wang;LI Jing-jing;WANG Tao(School of Mechanical Engineering,Hefei University of Technology,Hefei 230009,China)
出处
《组合机床与自动化加工技术》
北大核心
2022年第9期55-58,共4页
Modular Machine Tool & Automatic Manufacturing Technique
基金
安徽省科技重大专项(201903a05020011)。
关键词
永磁同步电机
高频方波注入
无传感器控制
无滤波器
扩张状态观测器
permanent magnet synchronous motor
high frequency square wave injection
sensorless control
no filter
extended state observer
