HR Control Strategy Based on Phase Compensation for LCL Grid-Connected Inverters in Weak Grid

Jian Wu; Zhihang Luo; Yongshuai Cui; Dianguo Xu

doi:10.1109/REPE55559.2022.9949524

HR Control Strategy Based on Phase Compensation for LCL Grid-Connected Inverters in Weak Grid

Jian Wu
, Zhihang Luo
, Yongshuai Cui
, Dianguo Xu

School of Electrical Engineering and Automation

Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

With the large-scale development of renewable energy, distributed power generation represented by voltage source type grid-connected converters with inductor-capacitor-inductor (LCL) filter is increasingly used in power systems. Aiming at the problem that the increase of grid impedance in the weak grid reduces the system bandwidth, which leads to the instability of multiple harmonic resonant (HR) control, this paper proposes an improved HR current control strategy for LCL grid-connected inverters. The traditional HR control is improved by phase compensation to avoid the \boldsymbol-\pi line crossing caused by the sudden phase change. The weak grid adaptability of traditional and phase-compensated HR control is analyzed and simulated respectively. And the results shows that the current THD is only 1.57% with improved HR control when the weak grid inductance is 3mH, which can effectively improve the system stability and robust performance under weak grid conditions.

Original language	English
Title of host publication	2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	260-264
Number of pages	5
ISBN (Electronic)	9781665482066
DOIs	https://doi.org/10.1109/REPE55559.2022.9949524
State	Published - 2022
Event	5th International Conference on Renewable Energy and Power Engineering, REPE 2022 - Virtual, Online, China Duration: 28 Sep 2022 → 30 Sep 2022

Publication series

Name	2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022

Conference

Conference	5th International Conference on Renewable Energy and Power Engineering, REPE 2022
Country/Territory	China
City	Virtual, Online
Period	28/09/22 → 30/09/22

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

inductor-capacitor-inductor (LCL) filter
multiple harmonic resonant (HR) control
phase compensation
weak grid

Access to Document

10.1109/REPE55559.2022.9949524

Cite this

Wu, J., Luo, Z., Cui, Y., & Xu, D. (2022). HR Control Strategy Based on Phase Compensation for LCL Grid-Connected Inverters in Weak Grid. In 2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022 (pp. 260-264). (2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/REPE55559.2022.9949524

Wu, Jian ; Luo, Zhihang ; Cui, Yongshuai et al. / HR Control Strategy Based on Phase Compensation for LCL Grid-Connected Inverters in Weak Grid. 2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022. Institute of Electrical and Electronics Engineers Inc., 2022. pp. 260-264 (2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022).

@inproceedings{8ae0c6c70e7e455ca7a989f4022e590f,

title = "HR Control Strategy Based on Phase Compensation for LCL Grid-Connected Inverters in Weak Grid",

abstract = "With the large-scale development of renewable energy, distributed power generation represented by voltage source type grid-connected converters with inductor-capacitor-inductor (LCL) filter is increasingly used in power systems. Aiming at the problem that the increase of grid impedance in the weak grid reduces the system bandwidth, which leads to the instability of multiple harmonic resonant (HR) control, this paper proposes an improved HR current control strategy for LCL grid-connected inverters. The traditional HR control is improved by phase compensation to avoid the \textbackslash{}boldsymbol-\textbackslash{}pi line crossing caused by the sudden phase change. The weak grid adaptability of traditional and phase-compensated HR control is analyzed and simulated respectively. And the results shows that the current THD is only 1.57\% with improved HR control when the weak grid inductance is 3mH, which can effectively improve the system stability and robust performance under weak grid conditions.",

keywords = "inductor-capacitor-inductor (LCL) filter, multiple harmonic resonant (HR) control, phase compensation, weak grid",

author = "Jian Wu and Zhihang Luo and Yongshuai Cui and Dianguo Xu",

note = "Publisher Copyright: {\textcopyright} 2022 IEEE.; 5th International Conference on Renewable Energy and Power Engineering, REPE 2022 ; Conference date: 28-09-2022 Through 30-09-2022",

year = "2022",

doi = "10.1109/REPE55559.2022.9949524",

language = "英语",

series = "2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "260--264",

booktitle = "2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022",

address = "美国",

}

Wu, J, Luo, Z, Cui, Y & Xu, D 2022, HR Control Strategy Based on Phase Compensation for LCL Grid-Connected Inverters in Weak Grid. in 2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022. 2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022, Institute of Electrical and Electronics Engineers Inc., pp. 260-264, 5th International Conference on Renewable Energy and Power Engineering, REPE 2022, Virtual, Online, China, 28/09/22. https://doi.org/10.1109/REPE55559.2022.9949524

HR Control Strategy Based on Phase Compensation for LCL Grid-Connected Inverters in Weak Grid. / Wu, Jian; Luo, Zhihang; Cui, Yongshuai et al.
2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022. Institute of Electrical and Electronics Engineers Inc., 2022. p. 260-264 (2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

TY - GEN

T1 - HR Control Strategy Based on Phase Compensation for LCL Grid-Connected Inverters in Weak Grid

AU - Wu, Jian

AU - Luo, Zhihang

AU - Cui, Yongshuai

AU - Xu, Dianguo

PY - 2022

Y1 - 2022

N2 - With the large-scale development of renewable energy, distributed power generation represented by voltage source type grid-connected converters with inductor-capacitor-inductor (LCL) filter is increasingly used in power systems. Aiming at the problem that the increase of grid impedance in the weak grid reduces the system bandwidth, which leads to the instability of multiple harmonic resonant (HR) control, this paper proposes an improved HR current control strategy for LCL grid-connected inverters. The traditional HR control is improved by phase compensation to avoid the \boldsymbol-\pi line crossing caused by the sudden phase change. The weak grid adaptability of traditional and phase-compensated HR control is analyzed and simulated respectively. And the results shows that the current THD is only 1.57% with improved HR control when the weak grid inductance is 3mH, which can effectively improve the system stability and robust performance under weak grid conditions.

AB - With the large-scale development of renewable energy, distributed power generation represented by voltage source type grid-connected converters with inductor-capacitor-inductor (LCL) filter is increasingly used in power systems. Aiming at the problem that the increase of grid impedance in the weak grid reduces the system bandwidth, which leads to the instability of multiple harmonic resonant (HR) control, this paper proposes an improved HR current control strategy for LCL grid-connected inverters. The traditional HR control is improved by phase compensation to avoid the \boldsymbol-\pi line crossing caused by the sudden phase change. The weak grid adaptability of traditional and phase-compensated HR control is analyzed and simulated respectively. And the results shows that the current THD is only 1.57% with improved HR control when the weak grid inductance is 3mH, which can effectively improve the system stability and robust performance under weak grid conditions.

KW - inductor-capacitor-inductor (LCL) filter

KW - multiple harmonic resonant (HR) control

KW - phase compensation

KW - weak grid

UR - https://www.scopus.com/pages/publications/85143405310

U2 - 10.1109/REPE55559.2022.9949524

DO - 10.1109/REPE55559.2022.9949524

M3 - 会议稿件

AN - SCOPUS:85143405310

T3 - 2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022

SP - 260

EP - 264

BT - 2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 5th International Conference on Renewable Energy and Power Engineering, REPE 2022

Y2 - 28 September 2022 through 30 September 2022

ER -

Wu J, Luo Z, Cui Y, Xu D. HR Control Strategy Based on Phase Compensation for LCL Grid-Connected Inverters in Weak Grid. In 2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022. Institute of Electrical and Electronics Engineers Inc. 2022. p. 260-264. (2022 5th International Conference on Renewable Energy and Power Engineering, REPE 2022). doi: 10.1109/REPE55559.2022.9949524

HR Control Strategy Based on Phase Compensation for LCL Grid-Connected Inverters in Weak Grid

Abstract

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UN SDGs

Keywords

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