基于参数辨识的水下推进永磁同步电机无位置传感器控制  

Sensorless Control of Underwater Propulsion PMSM Based on Parameter Identification

作　　者：陈尧伟 曾庆军[1] 戴晓强[1] 吴伟 李宏宇 姚震球 CHEN Yao-wei;ZENG Qing-jun;DAI Xiao-qiang;WU Wei;LI Hong-yu;YAO Zhen-qiu(Electronic and Information College,Jiangsu University of Science and Technology,Zhenjiang 212003,China;Ma-rine Equipment Research Institute,Jiangsu University of Science and Technology,Zhenjiang 212003,China)

机构地区：[1]江苏科技大学电子信息学院,江苏镇江212003 [2]江苏科技大学海洋装备研究院,江苏镇江212003

出　　处：《水下无人系统学报》2021年第4期442-450,共9页Journal of Unmanned Undersea Systems

基　　金：国家自然科学基金项目(11574120);江苏省产业前瞻与共性关键技术项目(BE2018103).

摘　　要：针对水下推进器在运行过程中,永磁同步电机的定子电阻、电感等参数会受到温度、电流变化而导致的无位置控制算法估算转子位置和速度出现较大误差的问题,提出了一种基于参数辨识的龙伯格观测器水下推进器无位置传感器控制方法。该方法在双闭环矢量控制的基础上,采用带遗忘因子的递推最小二乘法作为参数辨识算法,通过在线辨识得到电机定子电阻和电感参数,将其取代龙伯格观测器模型中的初始电阻和电感参数,龙伯格观测器估算得到的反电动势作为锁相环的输入,最终,由锁相环输出得到转子的位置和速度。仿真结果表明,基于参数辨识的龙伯格观测器在受到参数变化干扰后,能快速准确地辨识出转子位置和速度信息,降低了无位置控制系统对电机参数的敏感性。In the operation of an underwater propeller,parameters of the permanent magnet synchronous motor(PMSM),such as stator resistance and inductance,are changed based on the temperature and current,resulting in a large error of the rotor position and speed,which are estimated by a sensorless control algorithm.In this paper,a sensorless control method is proposed to control an underwater propeller based on the Luenberger observer combined with parameter identification.In this method,based on a double closed-loop vector control strategy,recurrence least square(RLS)combined with a forgetting factor is adopted as an online parameter identification algorithm to evaluate the stator resistance and motor inductance.The initial resistance and inductance parameters in the Luenberger observer model are thereafter replaced using the same algorithm.The back electromotive force estimated through the Luenberger observer is used as the input of the phase-locked loop.Finally,the position and speed of the rotor are obtained from the output of the phase-locked loop.The simulation results show that the rotor position and speed can be rapidly and accurately identified by Luenberger observer when this parameter identification technique,which reduces the sensitivity of motor parameters on sensorless control system,is used.

关 键 词：水下推进器 永磁同步电机 龙伯格观测器 参数辨识 递推最小二乘法 敏感性 

分 类 号：TM351[电气工程—电机] TJ630.32[兵器科学与技术—武器系统与运用工程]