电工技术学报  2021, Vol. 36 Issue (20): 4339-4349    DOI: 10.19595/j.cnki.1000-6753.tces.200588
电力电子 |
全数字自适应滤波器不同离散结构的性能对比分析
刘亚静, 段超
北京交通大学电气工程学院 北京 100044
Performance Comparison and Analysis of All-Digital Adaptive Filter with Different Discrete Methods
Liu Yajing, Duan Chao
School of Electrical Engineering Beijing Jiaotong University Beijing 100044 China
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摘要 基于二阶广义积分器(SOGI)的自适应滤波器(AF)在电网电量测量、电机位置、速度检测与估计等场合广泛应用。在数字化实现过程中,反馈滞后一拍的存在和所采用离散方法的不同会使系统的性能出现不同程度的退化。该文在综合考虑上述因素的前提下,用稳定性、频率偏移特性、幅值增益特性及正交特性作为衡量系统性能退化的定量指标,分别进行了理论对比分析,并给出了上述4个指标随载波比的变化规律,从而为自适应滤波器数字实现时的离散方法的选取提供理论指导依据。最后通过仿真和实验验证了理论对比分析的正确性。
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刘亚静
段超
关键词 滞后一拍自适应滤波器频率偏移幅值增益正交性二阶广义积分器滞后一拍频率偏移幅值增益正交性    
Abstract:The Adaptive filter (AF) based on second-order generalized integrator (SOGI) is widely applied in power grid measurement, motor position/speed detection and estimation occasions. In the process of digital realization, the existence of unit delay and different discrete methods will degrade the performance of the system. Under the premise of considering the aforementioned factors, the stability, frequency offset, amplitude gain and orthogonality were used as quantitative indicators to evaluate the performance degradation of the digital AF. And then, the performance variation with carrier ratio was given to provide the theoretical basis for digital implementation of the adaptive filter. Simulation and experimental results verified the theoretical analysis.
Key wordsAdaptive filter    second-order generalized integrator    one-step-delay    frequency offset    amplitude gain    orthogonality    Adaptive filter    second-order generalized integrator    one-step-delay    frequency offset    amplitude gain    orthogonality   
收稿日期: 2020-05-23     
PACS: TM46  
基金资助:国家自然科学基金(51407005)、河北省重点研发计划(20351601D)和河北省高层次人才(A202003012)资助项目
通讯作者: 刘亚静 男,1981年生,博士,讲师,研究方向为电机数字控制系统集成化设计、伺服系统、运动控制IP核等。   
作者简介: 段 超 男,1994年生,硕士研究生,研究方向为伺服电机控制。E-mail: 18126083@bjtu.edu.cn
引用本文:   
刘亚静, 段超. 全数字自适应滤波器不同离散结构的性能对比分析[J]. 电工技术学报, 2021, 36(20): 4339-4349. Liu Yajing, Duan Chao. Performance Comparison and Analysis of All-Digital Adaptive Filter with Different Discrete Methods. Transactions of China Electrotechnical Society, 2021, 36(20): 4339-4349.
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