基于改进双滑模的永磁同步电机无位置传感器控制策略  

Position Sensorless Control Strategy of Permanent Magnet Synchronous Motor Based on Improved Double Sliding Mode

作　　者：温超[1] 邱楠 WEN Chao;QIU Nan(School of Locomotive and Vehicle Engineering,Dalian Jiaotong University,Dalian 116028,China)

机构地区：[1]大连交通大学机车车辆工程学院,大连116028

出　　处：《微特电机》2024年第6期43-48,共6页Small & Special Electrical Machines

摘　　要：针对永磁同步电机速度环传统PI控制存在动态响应差、超调量大以及传统滑模观测器观测精度低、抖振严重等问题,设计一种基于改进双滑模算法的无位置传感器控制策略。提出一种新型变指数趋近律,在此基础上结合微分积分滑模理论和新型切换函数设计滑模速度控制器代替传统PI控制器。引入扩张状态观测器补偿控制器未知扰动,实现速度环抗扰动复合滑模控制。基于Super-Twisting算法设计高阶滑模观测器并使用正交锁相环提取速度和位置信息。仿真结果表明,所设计的改进双滑模控制策略能够有效地提高系统的动态控制性能,提升观测精度,同时具有更好的抗扰动能力。In response to issues such as poor dynamic response,large overshoot,and low accuracy in traditional PI control for permanent magnet synchronous motor speed regulation without position sensors,a sensorless control strategy based on an improved double sliding mode algorithm was proposed.A novel variable exponent convergence law was introduced.On this basis,the sliding mode velocity controller was designed using the differential integral sliding mode theory and a novel switching function to replace the traditional PI controller.An extended state observer was incorporated to compensate for unknown disturbances,enabling disturbance rejection in the speed loop through composite sliding mode control.A high-order sliding mode observer was designed based on the Super-Twisting algorithm,and an orthogonal phase-locked loop was employed to extract velocity and position information.Simulation results demonstrate that the proposed improved double sliding mode control strategy effectively enhanced the dynamic control performance of the system,improved observation accuracy,and exhibited superior disturbance rejection capabilities.

关 键 词：永磁同步电机 无位置传感器控制 变指数趋近律 滑模控制器 高阶滑模观测器 

分 类 号：TM341[电气工程—电机] TM351