| 引用本文: | 石荣亮,张烈平,于雁南,张兴.基于改进嵌入式SOGI-FLL的储能变换器虚拟惯量控制策略[J].电力自动化设备,2021,41(2): |
| SHI Rongliang,ZHANG Lieping,YU Yannan,ZHANG Xing.Virtual inertia control strategy of energy storage converter based on improved embedded SOGI-FLL[J].Electric Power Automation Equipment,2021,41(2): |
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| 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。 |
| 关键词: 储能变换器 二阶广义积分器-锁频环 虚拟惯量 电网谐波 直流分量 频率微分信号 |
| DOI：10.16081/j.epae.202012003 |
| 分类号:TM46 |
| 基金项目: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) |
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| Virtual inertia control strategy of energy storage converter based on improved embedded SOGI-FLL |
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SHI Rongliang1, ZHANG Lieping1, YU Yannan1, ZHANG Xing2
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1.College of Mechanical and Control Engineering, Guilin University of Technology, Guilin 541004, China;2.School of Electrical Engineering and Automation, Hefei University of Technology, Hefei 230009, China
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| Abstract: |
| 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 SOGI-FLL) 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. |
| Key words: energy storage converter SOGI-FLL virtual inertia grid harmonic DC component frequency derivative signals |
