基于新型双滑模结构的永磁同步电机控制策略  

Control Strategy for Permanent Magnet Synchronous Motors Based on a NewDual Sliding Mode Structure

作　　者：陈先福 梁泉 黄新宇 李炜鑫 蔡年杰 CHEN Xianfu;LIANG Quan;HUANG Xinyu;LI Weixin;CAI Nianjie(School of Electronic,Electrical and Physics,Fujian University of Technology,Fuzhou 350118,China;School of Computer Science and Mathematics,Fujian University of Technology,Fuzhou 350118,China)

机构地区：[1]福建理工大学电子电气与物理学院,福州350118 [2]福建理工大学计算机科学与数学学院,福州350118

出　　处：《微电机》2024年第2期41-49,共9页Micromotors

基　　金：福建省科技计划引导项目(2020H0021)

摘　　要：针对传统永磁同步电机无感矢量控制系统中存在转速超调、强抖振以及鲁棒性差等问题,在位置环提出了一种以边界层可变的分段函数作为切换函数的新型全阶滑模观测器(NFSMO)并引入模糊控制模块实现对新切换函数边界层的自适应调节,使系统的高频抖振问题得到有效削弱以及提高了转子位置的观测精度;在速度环提出了一种新型趋近律与改进型扩展状态观测器(IESO)相组合的新型速度滑模抗扰动控制器(NSMDC),结合最大转矩电流比(MTPA)拟合模块能够有效降低扰动误差对系统造成的影响,提高系统的稳态性能。仿真结果表明:与传统方法相比,新型双滑模控制方法不仅能够有效改善系统的滑模抖振,且具有更优的抗干扰性和稳定性。Aiming at the problems of speed overshoot,strong chattering and poor robustness in the traditional sensorless vector control system of permanent magnet synchronous motor,a new full-order sliding mode observer(NFSMO)with a variable boundary layer segmentation function as the switching function was proposed in the position loop and a fuzzy control module was introduced to achieve adaptive adjustment of the boundary layer of the new switching function,so that the high frequency jitter problem of the system can be effectively weakened and the rotor position observation accuracy was improved.Secondly,a new convergence law combined with an improved extended state observer(IESO)was proposed in the speed loop as a new speed sliding mode anti-disturbance controller(NSMDC),which combined the maximum torque-to-current ratio(MTPA)fitting module to effectively reduce the influence of disturbance errors on the system and improve the steady state performance.Simulation results show that the new dual-sliding-mode control method is not only effective in improving the sliding-mode jitter of the system,but also has better immunity and stability than the conventional method.

关 键 词：永磁同步电机 全阶滑模观测器 滑模抗扰动控制器 最大转矩电流比 双滑模控制 

分 类 号：TM351[电气工程—电机] TN341[电子电信—物理电子学] TP273[自动化与计算机技术—检测技术与自动化装置]