Stability Analysis of Triple Active Bridge Converter with Hybrid Loads and Different Control Strategies

Conference paper (2023)

Authors

Haoyuan Yu Aalborg University
Hanwen Zhang Aalborg University
Yanbo Wang Aalborg University
Z. Qin DC systems, Energy conversion & Storage - EEMCS
Zhe Chen Aalborg University
P. Bauer DC systems, Energy conversion & Storage - EEMCS
Research Group
DC systems, Energy conversion & Storage (EEMCS) (TU Delft)
Copyright: © 2023 Haoyuan Yu, Hanwen Zhang, Yanbo Wang, Z. Qin, Zhe Chen, P. Bauer
DOI
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https://doi.org/10.1109/PEDG56097.2023.10215170
Triple active bridge converter Extra element theorem Impedance-based analysis method Constant power load
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Published Date

2023

Language

English

Reuse Rights

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Faculty

Electrical Engineering, Mathematics and Computer Science

Department

Electrical Sustainable Energy

Research Group

DC systems, Energy conversion & Storage

Abstract

This article investigates the stability of triple active bridge (TAB) converter with different types of loads. In this paper, port2 of TAB converter adopts voltage control to supply a constant power load (CPL), and port3 uses voltage control to supply a resistor or uses current control to supply a battery. Then, an extra element theorem-based (EET) modelling method based on the small signal model of the TAB converter is developed to derive the output impedance of different cases. The AC sweeping is implemented to validate the effectiveness of derivation. Furthermore, the impedance-based analysis method is applied to analyze the system stability. The analysis result shows that the instability issue caused by CPL at port2 can be suppressed by reducing the resistance load value at port3 or output current of port3. Simulation and experimental results are given to validate the stability analysis.