A Unified Model to Compare Stability of VSG and Current-Controlled Inverter Connected to Weak Grid

Xin Jiang; Hao Yi; Peng Yu; Yihan Xie; Deshuo Yu; Zhilong Zhang

doi:10.1109/CIYCEE59789.2023.10401387

A Unified Model to Compare Stability of VSG and Current-Controlled Inverter Connected to Weak Grid

Xin Jiang
, Hao Yi
, Peng Yu
, Yihan Xie
, Deshuo Yu
, Zhilong Zhang

School of Electrical Engineering

Xi'an Jiaotong University
Shenzhen Power Supply Corporation

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

Abstract

This paper builds a unified model from the perspective of active power and power angle to compare the stability of virtual synchronous generator (VSG) and current-controlled inverter (CCI) when connected to weak grid. Under the unified model, the effect of grid strength on the stability and dynamic response of CCI and VSG is analyzed. It is found that VSG better damps active power perturbation while CCI will have right half plane poles (RHP) under weak grid, which result in stronger stability of VSG than CCI under weak grid. Then an active power feedforward control is proposed to improve the stability of CCI under weak grid. Through feedforward the input of active power controller to the amplitude command of AC voltage control, the low frequency oscillation of CCI under weak grid is well suppressed. Simulation validates the theoretical analysis and effectiveness of the proposed control.

Original language	English
Title of host publication	2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9798350305562
DOIs	https://doi.org/10.1109/CIYCEE59789.2023.10401387
State	Published - 2023
Event	4th IEEE China International Youth Conference on Electrical Engineering, CIYCEE 2023 - Chengdu, China Duration: 8 Dec 2023 → 10 Dec 2023

Publication series

Name	2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023

Conference

Conference	4th IEEE China International Youth Conference on Electrical Engineering, CIYCEE 2023
Country/Territory	China
City	Chengdu
Period	8/12/23 → 10/12/23

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

VSG
current-controlled inverter
stability analysis
weak grid

Access to Document

10.1109/CIYCEE59789.2023.10401387

Cite this

Jiang, X., Yi, H., Yu, P., Xie, Y., Yu, D., & Zhang, Z. (2023). A Unified Model to Compare Stability of VSG and Current-Controlled Inverter Connected to Weak Grid. In 2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023 (2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CIYCEE59789.2023.10401387

Jiang, Xin ; Yi, Hao ; Yu, Peng et al. / A Unified Model to Compare Stability of VSG and Current-Controlled Inverter Connected to Weak Grid. 2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023. Institute of Electrical and Electronics Engineers Inc., 2023. (2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023).

@inproceedings{966b6acfbc40430099c1c12126ad1062,

title = "A Unified Model to Compare Stability of VSG and Current-Controlled Inverter Connected to Weak Grid",

abstract = "This paper builds a unified model from the perspective of active power and power angle to compare the stability of virtual synchronous generator (VSG) and current-controlled inverter (CCI) when connected to weak grid. Under the unified model, the effect of grid strength on the stability and dynamic response of CCI and VSG is analyzed. It is found that VSG better damps active power perturbation while CCI will have right half plane poles (RHP) under weak grid, which result in stronger stability of VSG than CCI under weak grid. Then an active power feedforward control is proposed to improve the stability of CCI under weak grid. Through feedforward the input of active power controller to the amplitude command of AC voltage control, the low frequency oscillation of CCI under weak grid is well suppressed. Simulation validates the theoretical analysis and effectiveness of the proposed control.",

keywords = "VSG, current-controlled inverter, stability analysis, weak grid",

author = "Xin Jiang and Hao Yi and Peng Yu and Yihan Xie and Deshuo Yu and Zhilong Zhang",

note = "Publisher Copyright: {\textcopyright} 2023 IEEE.; 4th IEEE China International Youth Conference on Electrical Engineering, CIYCEE 2023 ; Conference date: 08-12-2023 Through 10-12-2023",

year = "2023",

doi = "10.1109/CIYCEE59789.2023.10401387",

language = "英语",

series = "2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023",

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

booktitle = "2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023",

}

Jiang, X, Yi, H, Yu, P, Xie, Y, Yu, D & Zhang, Z 2023, A Unified Model to Compare Stability of VSG and Current-Controlled Inverter Connected to Weak Grid. in 2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023. 2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023, Institute of Electrical and Electronics Engineers Inc., 4th IEEE China International Youth Conference on Electrical Engineering, CIYCEE 2023, Chengdu, China, 8/12/23. https://doi.org/10.1109/CIYCEE59789.2023.10401387

A Unified Model to Compare Stability of VSG and Current-Controlled Inverter Connected to Weak Grid. / Jiang, Xin; Yi, Hao; Yu, Peng et al.
2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023. Institute of Electrical and Electronics Engineers Inc., 2023. (2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023).

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

TY - GEN

T1 - A Unified Model to Compare Stability of VSG and Current-Controlled Inverter Connected to Weak Grid

AU - Jiang, Xin

AU - Yi, Hao

AU - Yu, Peng

AU - Xie, Yihan

AU - Yu, Deshuo

AU - Zhang, Zhilong

PY - 2023

Y1 - 2023

N2 - This paper builds a unified model from the perspective of active power and power angle to compare the stability of virtual synchronous generator (VSG) and current-controlled inverter (CCI) when connected to weak grid. Under the unified model, the effect of grid strength on the stability and dynamic response of CCI and VSG is analyzed. It is found that VSG better damps active power perturbation while CCI will have right half plane poles (RHP) under weak grid, which result in stronger stability of VSG than CCI under weak grid. Then an active power feedforward control is proposed to improve the stability of CCI under weak grid. Through feedforward the input of active power controller to the amplitude command of AC voltage control, the low frequency oscillation of CCI under weak grid is well suppressed. Simulation validates the theoretical analysis and effectiveness of the proposed control.

AB - This paper builds a unified model from the perspective of active power and power angle to compare the stability of virtual synchronous generator (VSG) and current-controlled inverter (CCI) when connected to weak grid. Under the unified model, the effect of grid strength on the stability and dynamic response of CCI and VSG is analyzed. It is found that VSG better damps active power perturbation while CCI will have right half plane poles (RHP) under weak grid, which result in stronger stability of VSG than CCI under weak grid. Then an active power feedforward control is proposed to improve the stability of CCI under weak grid. Through feedforward the input of active power controller to the amplitude command of AC voltage control, the low frequency oscillation of CCI under weak grid is well suppressed. Simulation validates the theoretical analysis and effectiveness of the proposed control.

KW - VSG

KW - current-controlled inverter

KW - stability analysis

KW - weak grid

UR - https://www.scopus.com/pages/publications/85184850072

U2 - 10.1109/CIYCEE59789.2023.10401387

DO - 10.1109/CIYCEE59789.2023.10401387

M3 - 会议稿件

AN - SCOPUS:85184850072

T3 - 2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023

BT - 2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 4th IEEE China International Youth Conference on Electrical Engineering, CIYCEE 2023

Y2 - 8 December 2023 through 10 December 2023

ER -

Jiang X, Yi H, Yu P, Xie Y, Yu D, Zhang Z. A Unified Model to Compare Stability of VSG and Current-Controlled Inverter Connected to Weak Grid. In 2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023. Institute of Electrical and Electronics Engineers Inc. 2023. (2023 IEEE 4th China International Youth Conference on Electrical Engineering, CIYCEE 2023). doi: 10.1109/CIYCEE59789.2023.10401387

A Unified Model to Compare Stability of VSG and Current-Controlled Inverter Connected to Weak Grid

Abstract

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UN SDGs

Keywords

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