基于级联型二阶广义积分器的单相锁相环设计  

Design of single-phase phase-locked loop based on cascaded second-order gener‐alized integrator

作　　者：俞聪 夏银水[1,2] 石守东 刘秉澍[2] 李红全 Yu Cong;Xia Yinshui;Shi Shoudong;Liu Bingshu;Li Hongquan(Faculty of Electrical Engineering and Computer Science,Ningbo University,Ningbo 315000,China;Loctek Ergonomic Technology Corp,Ningbo 315000,China)

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315000 [2]乐歌人体工学科技股份有限公司,浙江宁波315000

出　　处：《电子技术应用》2025年第1期113-117,共5页Application of Electronic Technique

摘　　要：由于当前电网中不可避免地存在着各种直流偏置和高次谐波,而传统的基于二阶广义积分器结构(Secondorder Generalized Integrator,SOGI)的单相锁相环(Phase-Locked Loop,PLL)存在对直流偏置敏感及对高次谐波的滤除能力不足等问题,针对该问题提出了一种级联型二阶广义积分器结构。该结构由三个SOGI模块级联构成,通过前两级SOGI模块分别滤除高次谐波和直流分量,再经过第三级SOGI模块输出一对正交分量。通过MATLAB/Simu‐link建模仿真及实验平台验证,结果显示文中所提出的级联型SOGI-PLL具有不错的抗直流偏置干扰能力及谐波抑制效果,对单相系统并网的实现具有良好的借鉴意义。Due to the inevitable existence of various DC bias and higher harmonics in the current power grid,the traditional phase-locked loop(PLL)based on Second-order Generalized Integrator(SOGI)is sensitive to DC bias and has insufficient filter‐ing ability for higher harmonics.To solve this problem,a cascaded second-order generalized integrator structure is proposed,which consists of three cascaded SOGI modules.The first two SOGI modules filter out the higher harmonic and DC components respectively,and then output a pair of orthogonal components through the third SOGI module.Through MATLAB/Simulink mod‐eling simulation and experimental platform verification,the results show that the cascaded SOGI-PLL proposed in this paper has good anti-DC bias interference ability and harmonic suppression effect,which has a good reference significance for the realiza‐tion of single-phase system.

关 键 词：级联型二阶广义积分器 锁相环 直流偏置 谐波抑制 并网控制 

分 类 号：TN76[电子电信—电路与系统] TM46[电气工程—电器]