Decentralized control of the decoupled modular multi-active-bridge converters for modular scalability
Author(s)
LIU, Chengwei
Sun, Kai
Mou, Di
Rodriguez-Bernuz, Joan Marc
Junyent-Ferre, Adria
Type
Conference Paper
Abstract
Modular multi-active-bridge (MMAB) converters have emerged as promising solutions for efficient power conversion in integrating various distributed energy resources, energy storage systems, and loads. However, existing studies predominantly rely on centralized controllers, which limit modular scalability due to the lack of software modularity. This also poses significant computational burdens for the centralized controllers.
To address these challenges, this paper proposes a decentralized control method based on a decoupled MMAB converter. The decoupling is achieved by eliminating the inductance from one port, thereby simplifying the control complexity. Based on the
decoupled MMAB converter, a decentralized control scheme is proposed, which is composed of a PI controller for frequency synchronization and a proportional controller for direct phase-shift regulation. This combination ensures accurate module synchronization and rapid transient responses. A detailed parameter design is obtained using small-signal analysis. Additionally, a thorough inductance design methodology is provided to maintain the phase shift within a stable operating range. Simulation results
validate the effectiveness and superior dynamic performance of the proposed decentralized control strategy.
To address these challenges, this paper proposes a decentralized control method based on a decoupled MMAB converter. The decoupling is achieved by eliminating the inductance from one port, thereby simplifying the control complexity. Based on the
decoupled MMAB converter, a decentralized control scheme is proposed, which is composed of a PI controller for frequency synchronization and a proportional controller for direct phase-shift regulation. This combination ensures accurate module synchronization and rapid transient responses. A detailed parameter design is obtained using small-signal analysis. Additionally, a thorough inductance design methodology is provided to maintain the phase shift within a stable operating range. Simulation results
validate the effectiveness and superior dynamic performance of the proposed decentralized control strategy.
Date Acceptance
2025-07-02
Citation
IECON 2025-51st Annual Conference of the IEEE Industrial Electronics Society
Publisher
IEEE
Journal / Book Title
IECON 2025-51st Annual Conference of the IEEE Industrial Electronics Society
Copyright Statement
Subject to copyright. This paper is embargoed until publication. Once published the author’s accepted manuscript will be made available under a CC-BY License in accordance with Imperial’s Research Publications Open Access policy (www.imperial.ac.uk/oa-policy).
Source
IECON 2025-51st Annual Conference of the IEEE Industrial Electronics Society
Publication Status
Accepted
Start Date
2025-10-14
Finish Date
2025-10-17
Coverage Spatial
Madrid, Spain