摘要
针对储能变换器采用二阶广义积分器-锁频环(SOGI-FLL)的虚拟惯量控制策略,易受电网谐波和直流分量干扰而存在纹波的问题,提出一种基于改进嵌入式二阶广义积分器-锁频环(IESOGI-FLL)的虚拟惯量控制策略。将多重频率自适应陷波器与基于二阶广义积分器原理的频率自适应滤波器嵌入SOGI-FLL的控制系统中形成IESOGI-FLL;分别建立SOGI-FLL和IESOGI-FLL检测电网频率微分信号的小信号模型,给出二者的参数设计过程;基于MATLAB/Simulink软件进行仿真对比研究,并搭建了一套柴储微电网系统实验平台,仿真与实验结果均验证了所提控制策略的有效性。
The SOGI-FLL(Second Order Generalized Integrator-based Frequency Locked Loop)-based virtual inertia control strategy of energy storage converter suffers from oscillatory ripples due to the grid harmonics and DC components,so a virtual inertia control strategy based on IESOGI-FLL(Improved Embedded SOGIFLL)is proposed.The IESOGI-FLL is formed by embedding a multi-frequency adaptive trap filter and a SOGI principle-based frequency adaptive filter into the control system of SOGI-FLL.The small signal models of SOGI-FLL and IESOGI-FLL for detecting frequency derivative signals of power grid are established respectively,and the design process of their parameters is given.Based on MATLAB/Simulink software,a set of experimental platform for the diesel-storage microgrid system is built.The simulative and experimental results verify the effectiveness of the proposed control strategy.
作者
石荣亮
张烈平
于雁南
张兴
SHI Rongliang;ZHANG Lieping;YU Yannan;ZHANG Xing(College of Mechanical and Control Engineering,Guilin University of Technology,Guilin 541004,China;School of Electrical Engineering and Automation,Hefei University of Technology,Hefei 230009,China)
出处
《电力自动化设备》
EI
CSCD
北大核心
2021年第2期118-123,共6页
Electric Power Automation Equipment
基金
广西省自然科学基金资助资助(2020JJB170004)
桂林理工大学科研启动基金资助项目(GUTQDJJ2019167)。
