Improved Damping Control of Grid-forming Inverter Using DC Dynamics

Meng Chen*, Dao Zhou, Frede Blaabjerg

*Corresponding author for this work

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

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Abstract

The DC side of the grid-forming inverter is usually simplified as an ideal source when considering the AC dynamics. However, the DC dynamics actually contain useful information of the AC side. This paper proposes an improved damping control for the grid-forming inverter using the DC dynamics. The error of the DC voltage is introduced into the active power loop through a proportional controller. As a result, an extra freedom in addition to the virtual inertia can be adjusted. A small-signal analysis is carried out in detail to study the impact of the DC dynamics. Compared with other damping methods, the proposed method can simultaneously improve the performance of not only the AC side but also the DC side without increasing the order of the system The simulation results verify the effectiveness of the proposed method.
Original languageEnglish
Title of host publicationProceedings of the 2023 IEEE 17th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)
Number of pages6
PublisherIEEE Press
Publication dateJun 2023
Pages1-6
Article number10227457
ISBN (Print)979-8-3503-0005-5
ISBN (Electronic)979-8-3503-0004-8
DOIs
Publication statusPublished - Jun 2023
Event2023 IEEE 17th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG) - Tallinn, Estonia, Tallinn, Estonia
Duration: 14 Jun 202316 Jun 2023

Conference

Conference2023 IEEE 17th International Conference on Compatibility, Power Electronics and Power Engineering (CPE-POWERENG)
LocationTallinn, Estonia
Country/TerritoryEstonia
CityTallinn
Period14/06/202316/06/2023

Keywords

  • AC dynamics
  • DC dynamics
  • damping control
  • grid-forming inverter
  • loop coupling

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