Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/163641
Title: Impedance modeling and stability-oriented parameter optimization of isolated dual active bridge-based two-stage AC-DC-DC converter
Authors: Feng, Fan
Fang, Jingyang
Manandhar, Ujjal
Gooi, Hoay Beng
Wang, Liguo
Keywords: Engineering::Electrical and electronic engineering
Issue Date: 2022
Source: Feng, F., Fang, J., Manandhar, U., Gooi, H. B. & Wang, L. (2022). Impedance modeling and stability-oriented parameter optimization of isolated dual active bridge-based two-stage AC-DC-DC converter. Frontiers in Energy Research, 10, 874467-. https://dx.doi.org/10.3389/fenrg.2022.874467
Journal: Frontiers in Energy Research
Abstract: The isolated dual active bridge (DAB)-based two-stage AC-DC-DC converters have been widely applied in grid-connected power electronics systems. However, the impedance interactions between the DAB converter and the AC-DC rectifier can cause instability problems to the two-stage converter systems. The accurate terminal impedance characteristics of the DAB converters are still not clear due to the high frequency ac conversion stage. This makes it difficult to assess the impacts of the DAB circuit parameters on the stability of the two-stage converters. To address these issues, the impedance models of the DAB converters are originally derived in this paper. Based on the developed impedance models, the stability of the DAB-based two-stage AC-DC-DC converters is analyzed. The impacts of the DAB converter circuit parameters on the stability of the two-stage AC-DC-DC converters are comprehensively revealed by the Bode and Nyquist plots. The analysis results offer instructive implications to finetune the design rules of the DAB converters. The conclusions are validated by comprehensive simulation and experimental results.
URI: https://hdl.handle.net/10356/163641
ISSN: 2296-598X
DOI: 10.3389/fenrg.2022.874467
Rights: © 2022 Feng, Fang, Manandhar, Gooi and Wang. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:EEE Journal Articles

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