采用改进复矢量的PMSM电流解耦控制  

Current decoupling control of PMSM based on improved complex vector

作　　者：洪俊杰[1] 何衍东 黄健钊 李立毅[2] HONG Junjie;HE Yandong;HUANG Jianzhao;LI Liyi(School of Automation,Guangdong University of Technology,Guangzhou 510006,China;School of Electrical Engineering and Automation,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]广东工业大学自动化学院,广东广州510006 [2]哈尔滨工业大学电气与自动化工程学院,黑龙江哈尔滨150001

出　　处：《电机与控制学报》2023年第6期106-115,共10页Electric Machines and Control

基　　金：国家自然科学基金(51407035)。

摘　　要：电压前馈的永磁同步电动机解耦控制系统在电机参数变化时存在解耦性能不佳问题,为此引入一种基于复矢量的电流解耦控制,复矢量控制通过引入随速度变化的虚轴零点与被控对象的极点进行抵消,使系统近似等效为一阶惯性环节,从而提高解耦效果,同时使用扰动观测器对电机参数变化和电流耦合引起的电压误差进行观测补偿,降低dq轴电流耦合增益,改善复矢量控制器参数与电机参数失配时的解耦性能,提升系统的鲁棒性以及动态性能。通过与传统解耦控制策略的仿真对比,采用该策略能够有效提高dq轴电流动态跟踪性能,减少电流波动,验证了该策略对dq轴电流解耦的有效性。The voltage feed-forward decoupling control is sensitive to the parameter change of PMSM so that its decoupling performance is not ideal when the motor parameters change,so a kind of current decoupling control based on complex vector is proposed.The complex vector control introduces a virtual axis zero point that varies with speed to cancel out the poles of the controlled object,making the system approximately equivalent to a first-order inertial link,thereby improving the decoupling effect.At the same time,in order to improve the decoupling performance when the parameters of complex vector controller and motor parameters mismatch,the disturbance observer was used to observe and compensate the voltage error caused by the variation of motor parameters and current coupling,which can reduce the dq axis current coupling gain,and enhance the robustness and dynamic performance of the system.Compared with the traditional decoupling control strategy,the decoupling strategy can effectively improve the dynamic tracking performance of dq axis current and reduce current fluctuations,its effectiveness on dq axis current is verified.

关 键 词：永磁同步电机 弱磁运行 电流解耦控制 复矢量 扰动观测器 参数鲁棒性 

分 类 号：TM341[电气工程—电机]