近日,重庆邮电大学(Chongqing University of Posts and Telecommunications)李敏团队以《基于改进型滑模变结构的永磁同步电机的无位置传感器矢量控制》为题在《电机与控制应用》上发表最新研究论文,第一作者和通信作者均为李敏。
本文作者提出一种基于改进型滑模变结构的永磁同步电机的无位置传感器矢量控制方法,来削弱传统滑模观测器所引起的抖振现象,从而改善系统的动态、稳态性能。所设计的改进型滑模变结构无位置传感器矢量控制系统的结构框图如图1所示。
本文主要贡献有三点。第一,为削弱传统滑模控制所引起的抖振,提出一种基于改进型滑模变结构的永磁同步电机的无位置传感器矢量控制方法,设计了改进型滑模观测器ISMO和改进型滑模控制器ISMC,来提升系统的动态、稳态性能。第二,采用可变边界层厚度的双曲正切函数作为滑动模态,根据误差大小,通过模糊逻辑控制对双曲正切函数的形状系数自动调整,来控制边界层厚度变化,实现更平滑的滑模面切换,来削弱系统抖振。第三,对所设计的ISMO和ISMC,运用李雅普洛夫第二定理进行稳定性分析和推导,理论推导证实了所设计的控制系统的稳定性。
作者对传统的滑模观测器等三种控制方法进行对比,仿真结果表明改进型滑模变结构控制系统运行良好。
图2 四种控制方法在运行速度为2000 r/min的仿真结果
本文所设计的变结构滑模控制系统为永磁同步电机在实际应用中提供了参考方案,有助于推动永磁电机实现更精确、更稳定的控制。
Sensorless Vector Control of PMSM Based on Improved Sliding Mode with Variable Structure
In this paper, a sensorless vector control method based on improved sliding mode with variable structure for the permanent magnet synchronous motor is proposed to reduce the buffeting phenomenon caused by traditional sliding mode observer and to improve the dynamic and static performance. The structure block diagram of sensorless vector control system based on the improved sliding mode with variable structure is shown as Figure 1.
Fig.1 Block diagram of the sensorless vector control system based on improved sliding mode with variable structure
Fig.2 Simulation results of four control methods at running speed of 2000 r/min
支持基金:
国家自然科学基金项目(92267106);
论文链接:
http://www.motor-abc.cn/djykzyy/article/abstract/20240203
推荐引用格式:
LI Min, LI Linlin, ZHOU Junpeng. Sensorless Vector Control of PMSM Based on Improved Sliding Mode with Variable Structure[J]. Electric Machines & Control Application, 2024, 51(2): 22-33.
李敏,女,教授,硕士生导师,重庆邮电大学。长期从事电机控制与应用、无人机、无线传感器网络等领域的教学和科研工作,主讲《电机学》、《电力电子技术》等课程。科研工作聚焦于车载电机控制及应用、无人机通信、无线传感器网络等方向。主持国家自然科学基金项目1项、主研国家级项目3项,主持省部级项目3项;发表SCI/EI收录的论文30余篇,申请发明专利20余项,其中授权11项。limin@cqupt.edu.cn
Min Li, female, professor, master supervisor at Chongqing University of Posts and Telecommunications. She has been engaged in teaching and scientific research in the fields of motor control and application, unmanned aerial vehicle, wireless sensor network and so on for a long time, and mainly teaches courses such as "Electric machinery" and "Power Electronic". Her research work is mainly in the direction of vehicle motor and its applications, UAV communication, wireless sensor network, etc. She has undertaken 3 National Natural Science Foundation projects, 1 National Key Research and Development Plan project, and more than 3 Natural Science Foundation projects of Chongqing. She has published more than 30 papers included in SCI/EI, and applied for more than 20 invention patents , of which 11 are authorized. limin@cqupt.edu.cn
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