Unified control scheme of the interlink converter for multi-voltage DC distribution systems
File(s)
Author(s)
Type
Conference Paper
Abstract
The need to build resilient distribution systems provides the incentive to decentralize voltage stability responsibilities across the entire network instead of the main grid. This requires the system to operate in various modes depending on the availability and location of the voltage sources. To facilitate seamless transitions between different operation modes, this paper presents a unified control scheme designed for the interlink converter connecting multi-voltage buses in distribution systems. Under normal conditions, the proposed scheme efficiently manages power flow. In the event of loss of a voltage control unit at one bus, the scheme autonomously provides voltage support to this bus to ensure the stable operation of the whole network. This is achieved without the need for mode detection and communication, thereby preventing instability risk due to the inaccurate or delayed mode transition. Moreover, the proposed scheme inherently supports input-series output-parallel converter configurations, achieving input voltage sharing and output current sharing without additional control loops. Simulation results validate the effectiveness and robustness of the proposed scheme.
Date Issued
2025-11-06
Date Acceptance
2025-07-02
Citation
IECON 2025-51st Annual Conference of the IEEE Industrial Electronics Society, 2025, pp.1-6
Publisher
IEEE
Start Page
1
End Page
6
Journal / Book Title
IECON 2025-51st Annual Conference of the IEEE Industrial Electronics Society
Copyright Statement
Copyright © 2025, IEEE. This is the author’s accepted manuscript made available under a CC-BY licence in accordance with Imperial’s Research Publications Open Access policy (www.imperial.ac.uk/oa-policy)
License URL
Source
IECON 2025-51st Annual Conference of the IEEE Industrial Electronics Society
Publication Status
Published
Start Date
2025-10-14
Finish Date
2025-10-17
Coverage Spatial
Madrid, Spain