Improving Transient Stability of Grid-Forming Inverters with Improved DC-link Voltage and Switching Frequency Control Methods

Qun Zheng; Zhenxiong Wang; Yanjun Zhang; Zhenhong Lai; Hao Yi; Kejia Tian

doi:10.1109/EI268505.2025.11425711

Improving Transient Stability of Grid-Forming Inverters with Improved DC-link Voltage and Switching Frequency Control Methods

Qun Zheng
, Zhenxiong Wang
, Yanjun Zhang
, Zhenhong Lai
, Hao Yi
, Kejia Tian

School of Electrical Engineering

Xi'an Jiaotong University
China State Shipbuilding Corporation

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

Abstract

Grid-forming (GFM) converter can emulate the characteristics of synchronous generators to control voltage and frequency. However, their overcurrent capability is limited by current constraints of power electronic devices. During faults, GFM converters may switch to current-limiting mode, which degrades stability and even lead to fault propagation. The aforementioned stability issues are directly linked to the overcurrent capability of the inverter. To overcome this, a coordinated strategy is proposed that combines current limiting with operational adjustments that include reducing DC-link voltage, switching frequency, and adapting modulation. This approach enhances transient overcurrent capability, ensures device safety, and improves power angle stability, allowing smooth recovery to normal operation after low-voltage ride-through events. The effectiveness of the proposed coordinated control method has been verified through simulations.

Original language	English
Title of host publication	2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	3348-3353
Number of pages	6
ISBN (Electronic)	9798331548599
DOIs	https://doi.org/10.1109/EI268505.2025.11425711
State	Published - 2025
Event	2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025 - Jilin, China Duration: 5 Dec 2025 → 8 Dec 2025

Publication series

Name	2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025

Conference

Conference	2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025
Country/Territory	China
City	Jilin
Period	5/12/25 → 8/12/25

UN SDGs

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

SDG 7 Affordable and Clean Energy

Keywords

Grid-forming (GFM) converters
Low-voltage ride-through events
Overcurrent capability
Stability

Access to Document

10.1109/EI268505.2025.11425711

Cite this

Zheng, Q., Wang, Z., Zhang, Y., Lai, Z., Yi, H., & Tian, K. (2025). Improving Transient Stability of Grid-Forming Inverters with Improved DC-link Voltage and Switching Frequency Control Methods. In 2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025 (pp. 3348-3353). (2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/EI268505.2025.11425711

Zheng, Qun ; Wang, Zhenxiong ; Zhang, Yanjun et al. / Improving Transient Stability of Grid-Forming Inverters with Improved DC-link Voltage and Switching Frequency Control Methods. 2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025. Institute of Electrical and Electronics Engineers Inc., 2025. pp. 3348-3353 (2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025).

@inproceedings{e4535dfe27a24277929625c17c1dc869,

title = "Improving Transient Stability of Grid-Forming Inverters with Improved DC-link Voltage and Switching Frequency Control Methods",

abstract = "Grid-forming (GFM) converter can emulate the characteristics of synchronous generators to control voltage and frequency. However, their overcurrent capability is limited by current constraints of power electronic devices. During faults, GFM converters may switch to current-limiting mode, which degrades stability and even lead to fault propagation. The aforementioned stability issues are directly linked to the overcurrent capability of the inverter. To overcome this, a coordinated strategy is proposed that combines current limiting with operational adjustments that include reducing DC-link voltage, switching frequency, and adapting modulation. This approach enhances transient overcurrent capability, ensures device safety, and improves power angle stability, allowing smooth recovery to normal operation after low-voltage ride-through events. The effectiveness of the proposed coordinated control method has been verified through simulations.",

keywords = "Grid-forming (GFM) converters, Low-voltage ride-through events, Overcurrent capability, Stability",

author = "Qun Zheng and Zhenxiong Wang and Yanjun Zhang and Zhenhong Lai and Hao Yi and Kejia Tian",

note = "Publisher Copyright: {\textcopyright} 2025 IEEE.; 2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025 ; Conference date: 05-12-2025 Through 08-12-2025",

year = "2025",

doi = "10.1109/EI268505.2025.11425711",

language = "英语",

series = "2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025",

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

pages = "3348--3353",

booktitle = "2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025",

}

Zheng, Q, Wang, Z, Zhang, Y, Lai, Z, Yi, H & Tian, K 2025, Improving Transient Stability of Grid-Forming Inverters with Improved DC-link Voltage and Switching Frequency Control Methods. in 2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025. 2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025, Institute of Electrical and Electronics Engineers Inc., pp. 3348-3353, 2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025, Jilin, China, 5/12/25. https://doi.org/10.1109/EI268505.2025.11425711

Improving Transient Stability of Grid-Forming Inverters with Improved DC-link Voltage and Switching Frequency Control Methods. / Zheng, Qun; Wang, Zhenxiong; Zhang, Yanjun et al.
2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025. Institute of Electrical and Electronics Engineers Inc., 2025. p. 3348-3353 (2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025).

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

TY - GEN

T1 - Improving Transient Stability of Grid-Forming Inverters with Improved DC-link Voltage and Switching Frequency Control Methods

AU - Zheng, Qun

AU - Wang, Zhenxiong

AU - Zhang, Yanjun

AU - Lai, Zhenhong

AU - Yi, Hao

AU - Tian, Kejia

PY - 2025

Y1 - 2025

N2 - Grid-forming (GFM) converter can emulate the characteristics of synchronous generators to control voltage and frequency. However, their overcurrent capability is limited by current constraints of power electronic devices. During faults, GFM converters may switch to current-limiting mode, which degrades stability and even lead to fault propagation. The aforementioned stability issues are directly linked to the overcurrent capability of the inverter. To overcome this, a coordinated strategy is proposed that combines current limiting with operational adjustments that include reducing DC-link voltage, switching frequency, and adapting modulation. This approach enhances transient overcurrent capability, ensures device safety, and improves power angle stability, allowing smooth recovery to normal operation after low-voltage ride-through events. The effectiveness of the proposed coordinated control method has been verified through simulations.

AB - Grid-forming (GFM) converter can emulate the characteristics of synchronous generators to control voltage and frequency. However, their overcurrent capability is limited by current constraints of power electronic devices. During faults, GFM converters may switch to current-limiting mode, which degrades stability and even lead to fault propagation. The aforementioned stability issues are directly linked to the overcurrent capability of the inverter. To overcome this, a coordinated strategy is proposed that combines current limiting with operational adjustments that include reducing DC-link voltage, switching frequency, and adapting modulation. This approach enhances transient overcurrent capability, ensures device safety, and improves power angle stability, allowing smooth recovery to normal operation after low-voltage ride-through events. The effectiveness of the proposed coordinated control method has been verified through simulations.

KW - Grid-forming (GFM) converters

KW - Low-voltage ride-through events

KW - Overcurrent capability

KW - Stability

UR - https://www.scopus.com/pages/publications/105035809252

U2 - 10.1109/EI268505.2025.11425711

DO - 10.1109/EI268505.2025.11425711

M3 - 会议稿件

AN - SCOPUS:105035809252

T3 - 2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025

SP - 3348

EP - 3353

BT - 2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025

Y2 - 5 December 2025 through 8 December 2025

ER -

Zheng Q, Wang Z, Zhang Y, Lai Z, Yi H, Tian K. Improving Transient Stability of Grid-Forming Inverters with Improved DC-link Voltage and Switching Frequency Control Methods. In 2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025. Institute of Electrical and Electronics Engineers Inc. 2025. p. 3348-3353. (2025 IEEE 9th Conference on Energy Internet and Energy System Integration, EI2 2025). doi: 10.1109/EI268505.2025.11425711

Improving Transient Stability of Grid-Forming Inverters with Improved DC-link Voltage and Switching Frequency Control Methods

Abstract

Publication series

Conference

UN SDGs

Keywords

Access to Document

Other files and links

Fingerprint

Cite this