基于SOGI-PLL的新型ip-iq谐波检测算法  

New ip-iq Harmonic Detection Algorithm Based on SOGI-PLL

作　　者：高轩宇 王宾[1] 梁立振[2,3] 刘伟 GAO Xuanyu;WANG Bing;LIANG Lizhen;LIU Wei(School of Electrical and Information Engineering,Anhui University of Science and Technology,Huainan Anhui 232001,China;Hefei Institutes of Physical Science,Chinese Academy of Sciences,Hefei 230000,China;Institute of Energy,Hefei Comprehensive National Science Center(Anhui Energy Laboratory),Hefei 230000,China)

机构地区：[1]安徽理工大学电气与信息工程学院,安徽淮南232001 [2]中国科学院合肥物质科学研究院,安徽合肥230000 [3]合肥综合性国家科学中心能源研究院(安徽省能源实验室),安徽合肥230000

出　　处：《兰州工业学院学报》2022年第3期64-68,共5页Journal of Lanzhou Institute of Technology

基　　金：2021安徽省省属高校与能源研究院协同创新项目(GXXT-2021-015)。

摘　　要：针对电网电压在非理想条件下出现的谐波畸变、直流分量等问题,在传统二阶广义积分器(SOGI)锁相环基础上,将改进型SOGI滤波器串联在传统ip-iq谐波检测环路中,提出新型ip-iq谐波检测算法,以提高其对直流分量和谐波的滤除能力。仿真结果表明:该锁相环能够在电网电压处于非理想状况时快速锁定频率,具有滤除高频信号和直流分量的能力;输出电流经过新型ip-iq算法检测出的电流畸变率更低。Aiming at the problems of harmonic distortion and DC components in the grid voltage under non-ideal conditions,based on the traditional second-order generalized integrator(SOGI)phase-locked loop,an improved SOGI filter is connected in series with the traditional ip-iq harmonic detector.In the loop,a new ip-iq harmonic detection algorithm is proposed,which improves the filtering ability of DC components and harmonics.The simulation results show that the phase-locked loop can quickly lock the frequency when the grid voltage is in a non-ideal state,and has the ability to filter out high-frequency signals and DC components;the output current detected by the new ip-iq algorithm has lower current distortion rate.

关 键 词：二阶广义积分器 锁相环 谐波畸变 

分 类 号：TM464[电气工程—电器]