Stability Analysis of Multi-paralleled Grid-connected Inverters with Different Controllers in Weak Grid Condition

被引：0
|
作者：
He, Jian [1 ]
Liu, Peng [1 ]
Duan, Shanxu [1 ]
机构：
[1] Huazhong Univ Sci & Technol, Sch Elect & Elect Engn, State Key Lab Adv Electromagnet Engn & Technol, Wuhan 430074, Peoples R China
来源：
IECON 2020: THE 46TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY | 2020年
关键词：
Multi-paralleled grid-connected inverter; stability analysis; stable boundary; weak grid; SYSTEM;
D O I：
10.1109/iecon43393.2020.9254333
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
The stability of grid-connected inverter system would be influenced by gird impedance. Low-frequency resonance issue may appear in weak grid condition. The multi-paralleled grid-connected inverter system can be equivalent to a single inverter connected to the weak grid if the parameters of inverters are consistent. This paper establishes the mathematical model of the N-paralleled grid-connected inverters considering grid impedance and the stability analysis with PI controller is given. The system will become unstable as the grid inductance or the number of parallel inverters increases. And an accurate stable boundary is obtained by graphic method. Furthermore, PR controller is proposed to improve the system stability and its results are studied, which show an improved robustness in weak grid conditions. Finally, simulation and experimental results have verified the correctness of theoretical analysis.
引用
收藏
页码：2350 / 2355
页数：6
相关论文
共 50 条
  • [1] Stability Analysis of Multi-Paralleled Grid-Connected Inverters with LCL-Filter in the Weak Grid
    Jin, Yinglin
    Fang, Tianzhi
    Shen, Shuheng
    Zhu, Shushu
    [J]. 45TH ANNUAL CONFERENCE OF THE IEEE INDUSTRIAL ELECTRONICS SOCIETY (IECON 2019), 2019, : 3937 - 3942
  • [2] Harmonic Stability Assessment for Multi-Paralleled, Grid-Connected Inverters
    Yoon, Changwoo
    Wang, Xiongfei
    Da Silva, Filipe Miguel Faria
    Bak, Claus Leth
    Blaabjerg, Frede
    [J]. 2014 INTERNATIONAL ELECTRONICS AND APPLICATION CONFERENCE AND EXPOSITION (PEAC), 2014, : 1098 - 1103
  • [3] A New Filter Topology for Multi-Paralleled Grid-Connected Inverters
    Zhou, Hongwei
    Yang, Xu
    Zhang, Jiansong
    [J]. 2019 IEEE 10TH INTERNATIONAL SYMPOSIUM ON POWER ELECTRONICS FOR DISTRIBUTED GENERATION SYSTEMS (PEDG 2019), 2019, : 429 - 433
  • [4] Stability Analysis of Multi-paralleled Grid-connected Inverters Including Distribution Parameter Characteristics of Transmission Lines
    Peng, Xianghua
    Yang, Honggeng
    [J]. CSEE JOURNAL OF POWER AND ENERGY SYSTEMS, 2021, 7 (01): : 93 - 104
  • [5] Modeling and stability analysis of current controllers for multi-paralleled grid-connected converters with LCL-filter
    Massing, J. R.
    Koch, G. G.
    Pereira, A. T.
    Pinheiro, H.
    Montagner, V. F.
    Oliveira, R. C. L. F.
    [J]. 2017 IEEE 18TH WORKSHOP ON CONTROL AND MODELING FOR POWER ELECTRONICS (COMPEL), 2017,
  • [6] Resonance Features of Multi-paralleled Grid-connected Inverters and its Damping Method
    Chen, Zhiyong
    Luo, An
    Chen, Yandong
    Li, Mingshen
    [J]. 2014 INTERNATIONAL ELECTRONICS AND APPLICATION CONFERENCE AND EXPOSITION (PEAC), 2014, : 120 - 125
  • [7] Improved Switching Ripple Suppression Strategy for Multi-Paralleled Grid-Connected Inverters System
    Cao, Wu
    Kang, Haotian
    Liu, Kangli
    Wang, Shunyu
    Zhao, Jianfeng
    Ji, Xiaochun
    Zhao, Jun
    [J]. 2019 10TH INTERNATIONAL CONFERENCE ON POWER ELECTRONICS AND ECCE ASIA (ICPE 2019 - ECCE ASIA), 2019,
  • [8] Responsibility Division for Harmonic Instability in the Multi-Paralleled Grid-Connected Inverters System Based on Impedance Analysis
    Zeng, Chengbi
    Wu, Xuefeng
    Miao, Hong
    Duan, Haoxiang
    [J]. IEEE ACCESS, 2023, 11 : 115450 - 115461
  • [9] Modeling and design of a multivariable control system for multi-paralleled grid-connected inverters with LCL filter
    Akhavan, Ali
    Mohammadi, Hamid Reza
    Guerrero, Josep M.
    [J]. INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS, 2018, 94 : 354 - 362
  • [10] Stability Analysis and Capacity Distribution of Multi-paralleled Current-Controlled Inverters and Voltage-Controlled VSGs Grid-Connected System
    Guo, Zixuan
    Zhang, Xing
    Li, Ming
    Wang, Jilei
    Fu, Xinxin
    Han, Feng
    [J]. 2021 IEEE 12TH INTERNATIONAL SYMPOSIUM ON POWER ELECTRONICS FOR DISTRIBUTED GENERATION SYSTEMS (PEDG), 2021,
12345