基于宽频带同步基频提取滤波器的永磁同步电机转子位置与转速估计  

Rotor Position and Speed Estimation of Permanent Magnet Synchronous Motor Based on Wideband Synchronous FundamentalFrequency Extraction Filter

作　　者：章春娟 王慧贞[1] 刘伟峰 傅子锐 Zhang Chunjuan;Wang Huizhen;Liu Weifeng;Fu Zirui(College of Automation Engineering Nanjing University of Aeronautics and Astronautics,Nanjing 211106 China;Shanghai Electro-Mechanical Engineering Institute,Shanghai 201109 China)

机构地区：[1]南京航空航天大学自动化学院,南京211106 [2]上海机电工程研究所,上海201109

出　　处：《电工技术学报》2022年第4期882-891,共10页Transactions of China Electrotechnical Society

摘　　要：由于滑模观测器的固有抖振及控制算法延迟、死区效应等非理想因素的影响,估计反电动势信号包含的谐波难以完全消除,已成为影响系统控制精度的主要因素。为了提升表贴式永磁同步电机的转子位置与转速观测精度,该文提出一种宽频带同步基频提取滤波器,提取估计反电动势基波。在此基础上,提出宽频带同步基频提取滤波器(WSFEF)与锁频环结合的信号处理方法,锁频环(FLL)的应用实现了WSFEF跟踪频率的自适应。构造基于WSFEF-FLL-锁相环(PLL)的位置与转速估计方法,将其应用到滑模控制中,增强了对谐波的抑制能力,提高了转子位置和转速估计的动态性能。仿真和实验验证了所提方法的可行性和有效性。The non-ideal factors,such as the inherent chattering of sliding mode observer(SMO),the delay of control algorithm,and the dead-time effect,and so on,will produce harmonic errors of position estimation,which become the main factors affecting the accuracy of rotor position estimation.To improve the performance of the surface permanent magnet synchronous motor(SPMSM),a wideband synchronous fundamental-frequency extraction filter is proposed to extract the fundamental wave signal of the estimated back EMF.Then,a novel signal processing method combing wideband synchronous fundamental frequency extraction filter-frequency locked loop(WSFEF-FLL)is applied,and the application of FLL ensures the tracking frequency of the WSFEF adaptive.Using the WSFEFFLL-PLL in the SMO based position estimator,the harmonics of the back EMF can be effectively eliminated,which improves the accuracy and dynamic performance of rotor position estimation.Simulation and experiment verify the feasibility and effectiveness of the proposed method.

关 键 词：高速表贴式永磁同步电机 位置与转速估计 宽频带同步基频提取滤波器 锁频环 滑模观测器 

分 类 号：TM341[电气工程—电机]