基于负载估计的永磁同步电机复合自抗扰调速设计  

Design of composite ADRC based on load estimation for PMSM speed regulation

作　　者：李培康 陆浩 李娟 李生权 LI Peikang;LU Hao;LI Juan;LI Shengquan(College of Electrical,Energy and Power Engineering,Yangzhou University,Yangzhou 225127,China)

机构地区：[1]扬州大学电气与能源动力工程学院,扬州225127

出　　处：《南京信息工程大学学报》2024年第4期537-543,共7页Journal of Nanjing University of Information Science & Technology

基　　金：国家自然科学基金(61903322);新能源电力系统国家重点实验室资助项目(LAPS19003);江苏省“六大人才高峰”项目(KTHY2018038)

摘　　要：针对永磁同步电机(PMSM)调速系统中,存在的建模误差和负载突变等内外扰动影响转速稳定的问题,提出一种基于负载估计的复合自抗扰调速策略.首先,在速度环采用自抗扰控制器替代PI控制器,以改善系统转速与超调之间的矛盾.其次,设计一个负载转矩观测器,通过转速和电流信号直接对负载转矩进行实时的估计和补偿,来解决扩张状态观测器(ESO)对负载突变响应较慢的问题.最后,基于Matlab/Simulink环境搭建了复合自抗扰调速系统的半实物实验平台,并与传统PI控制和线性自抗扰控制进行对比验证.仿真和实验结果表明,所提出的基于负载估计的复合自抗扰控制策略相较于传统控制方法在负载突变时转速变化量减少了30%以上,具有较优越的抗干扰能力和调速性能.To address the internal and external disturbances in Permanent Magnet Synchronous Motor(PMSM)such as modeling errors and sudden load variation,a load estimation-based composite Active Disturbance Rejection Control(ADRC)approach is proposed for PMSM speed regulation.ADRC is adopted to replace the PI controller in the speed loop to improve the performance of control system and solve the contradiction between system rapidity and overshooting.A load torque observer is designed to correct the slow response of ESO to sudden load variation by directly estimating and compensating the load torque in real time via speed and current signals.Additionally,a semi-physical experimental platform of composite ADRC for speed regulation is constructed in Matlab/Simulink environment,and the proposed composite ADRC is compared with traditional PI control and linear ADRC.The results illustrate that the proposed approach outperforms conventional controller by reducing the speed variation by more than 30%under abrupt load variation,and has superior disturbance rejection ability and speed regulation performance.

关 键 词：永磁同步电机 速度环控制 自抗扰控制 负载转矩观测器 

分 类 号：TM351[电气工程—电机] TP273[自动化与计算机技术—检测技术与自动化装置]