摘要
阐述2种已有虚拟惯量控制算法:一种是基于二阶广义积分器-锁频环(SOGI-FLL)的虚拟惯量实现方法,其消除直流与特征次谐波扰动的能力有限;另一种是基于级联SOGI-FLL(CSOGI-FLL)的虚拟惯量实现方法,消除直流分量的干扰,但在消除特征次谐波扰动方面的能力也有限。为此,提出一种基于改进型CSOGI-FLL(ICSOGI-FLL)的虚拟惯量控制技术,即将多重频率自适应陷波器引入到CSOGI-FLL的控制回路中,改善SOGI-FLL与CSOGI-FLL消除扰动的能力。最后,利用Matlab/Simulink软件搭建的仿真模型和建立的柴储微网系统测试平台进行实验验证,有效验证了所述基于ICSOGI-FLL的虚拟惯量控制技术的正确性。
Energy storage converters adopt the virtual inertia control technology based on a principle of the grid frequency differential operation,which has attracted widespread attention,but it has the problem of being easily interfered by the DC and characteristic subharmonic disturbance components.This paper describes two existing virtual inertia control algorithms:the second-order generalized integrator-based frequency-locked loop(SOGI-FLL)has limited ability to eliminate the DC and characteristic sub-harmonic disturbances;the cascaded SOGI-FLL(CSOGI-FLL)can remove the interference of the DC component,but its ability to eradicate the characteristic sub-harmonic disturbance is also limited.A novel virtual inertia control strategy using an improved CSOGI-FLL(ICSOGIFLL)is presented to deal with the above-mentioned problems.That is,multiple frequency adaptive notch filters are added into the CSOGI-FLL control loop to improve the capabilities of SOGI-FLL and CSOGI-FLL to eliminate disturbances.Finally,the simulation model built by using Matlab/Simulink software and the experimental platform of the diesel storage microgrid system are used for experimental verification.The test results effectively verify the correctness of the ICSOGI-FLL based virtual inertia control technology described in this paper.
作者
石荣亮
张烈平
王文成
于雁南
张兴
Shi Rongliang;Zhang Lieping;Wang Wencheng;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
《太阳能学报》
EI
CAS
CSCD
北大核心
2022年第1期235-241,共7页
Acta Energiae Solaris Sinica
基金
广西自然科学基金(2020GXNSFBA297124,2021GXNSFAA220038)
桂林理工大学科研启动基金(GUTQDJJ2019167)。
关键词
储能变换器
虚拟惯量
频率微分
直流分量
谐波扰动
二阶广义积分器-锁频环
energy storage converter
virtual inertia
frequency differential operation
DC component
harmonic disturbance
secondorder generalized integrator-based frequency-locked loop(SOGI-FLL)
