Generalized small-signal modelling of dual active bridge DC/DC converter

Osama M. Hebala; Ahmed A. Aboushady; Khaled H. Ahmed; Sam Burgess; Radhakrishna Prabhu

doi:10.1109/ICRERA.2018.8567014

Generalized small-signal modelling of dual active bridge DC/DC converter

Osama M. Hebala, Ahmed A. Aboushady, Khaled H. Ahmed, Sam Burgess, Radhakrishna Prabhu

Electrical Power Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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Abstract

This paper presents a novel generalised approach of the small-signal modelling of dual active bridge (DAB) DC/DC converter. The adopted analysis is based on a per-unit fundamental frequency representation of the DAB. The outcome of the proposed modelling approach is a small signal, linearised, state-space DAB model; which is considered as a main building block for future control applications. The developed small signal DAB model includes all possible degrees of freedom affecting the performance of the DAB; this includes the voltage conversion ratio to allow the study of all DAB operation modes (i.e.: unity-gain and buck/boost modes.). Furthermore, since triple phase shift control (TPS) is used in this development work, the proposed model incorporates phase shift in addition to duty ratios. This feature allows for bridge voltage regulation, which is essential for efficient DAB operation in the case of buck/boost operation. Another key achievement is that the proposed small signal modelling methodology can be applied to any bidirectional DC-DC converter regardless of ratings, parameter values and number of ports. Extensive simulation is carried out to verify the proposed analysis.

Original language	English
Title of host publication	2018 International Conference on Renewable Energy Research and Applications (ICRERA): 7th International Conference on Renewable Energy Research and Applications (ICRERA)
Publisher	IEEE
Pages	914-919
Number of pages	6
ISBN (Electronic)	9781538659823
ISBN (Print)	9781538659830
DOIs	https://doi.org/10.1109/ICRERA.2018.8567014
Publication status	Published - 10 Dec 2018

Publication series

Name
ISSN (Print)	2377-6897
ISSN (Electronic)	2572-6013

Keywords

bridge circuits
mathematical model
integrated circuit modeling
steady-state
inductors
analytical models
DC-DC power converters
Dual active bridge
DAB
triple phase shift
TPS

Documents and Links

10.1109/ICRERA.2018.8567014

Hebala, O.M. et al (2018) Generalized small-signal modelling of dual active bridge DC/DC converter
Copyright © 2018 IEEE. This is a post-peer review, pre-copy edited version of the article and may differ slightly from the final published version of the work. This work is made available in line with the publisher policy. Personal use of this material is permitted. Permission from IEEE must be obtained for all other users, including reprinting/ republishing this material for advertising or promotional purposes, creating new collective works for resale or redistribution to servers or lists, or reuse of any copyrighted components of this work in other works.
Accepted author manuscript, 1.12 MB

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Hebala, O. M., Aboushady, A. A., Ahmed, K. H., Burgess, S., & Prabhu, R. (2018). Generalized small-signal modelling of dual active bridge DC/DC converter. In 2018 International Conference on Renewable Energy Research and Applications (ICRERA): 7th International Conference on Renewable Energy Research and Applications (ICRERA) (pp. 914-919). IEEE. https://doi.org/10.1109/ICRERA.2018.8567014

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title = "Generalized small-signal modelling of dual active bridge DC/DC converter",

abstract = "This paper presents a novel generalised approach of the small-signal modelling of dual active bridge (DAB) DC/DC converter. The adopted analysis is based on a per-unit fundamental frequency representation of the DAB. The outcome of the proposed modelling approach is a small signal, linearised, state-space DAB model; which is considered as a main building block for future control applications. The developed small signal DAB model includes all possible degrees of freedom affecting the performance of the DAB; this includes the voltage conversion ratio to allow the study of all DAB operation modes (i.e.: unity-gain and buck/boost modes.). Furthermore, since triple phase shift control (TPS) is used in this development work, the proposed model incorporates phase shift in addition to duty ratios. This feature allows for bridge voltage regulation, which is essential for efficient DAB operation in the case of buck/boost operation. Another key achievement is that the proposed small signal modelling methodology can be applied to any bidirectional DC-DC converter regardless of ratings, parameter values and number of ports. Extensive simulation is carried out to verify the proposed analysis.",

keywords = "bridge circuits, mathematical model, integrated circuit modeling, steady-state, inductors, analytical models, DC-DC power converters, Dual active bridge, DAB, triple phase shift, TPS",

author = "Hebala, {Osama M.} and Aboushady, {Ahmed A.} and Ahmed, {Khaled H.} and Sam Burgess and Radhakrishna Prabhu",

note = "Acceptance in SAN AAM uploaded between acceptance and earliest publication. Most appropriate exception applied. ET 26/11/19 ",

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Hebala, OM, Aboushady, AA, Ahmed, KH, Burgess, S & Prabhu, R 2018, Generalized small-signal modelling of dual active bridge DC/DC converter. in 2018 International Conference on Renewable Energy Research and Applications (ICRERA): 7th International Conference on Renewable Energy Research and Applications (ICRERA). IEEE, pp. 914-919. https://doi.org/10.1109/ICRERA.2018.8567014

Generalized small-signal modelling of dual active bridge DC/DC converter. / Hebala, Osama M.; Aboushady, Ahmed A.; Ahmed, Khaled H.; Burgess, Sam; Prabhu, Radhakrishna.

2018 International Conference on Renewable Energy Research and Applications (ICRERA): 7th International Conference on Renewable Energy Research and Applications (ICRERA). IEEE, 2018. p. 914-919.

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

TY - GEN

T1 - Generalized small-signal modelling of dual active bridge DC/DC converter

AU - Hebala, Osama M.

AU - Aboushady, Ahmed A.

AU - Ahmed, Khaled H.

AU - Burgess, Sam

AU - Prabhu, Radhakrishna

N1 - Acceptance in SAN AAM uploaded between acceptance and earliest publication. Most appropriate exception applied. ET 26/11/19

PY - 2018/12/10

Y1 - 2018/12/10

N2 - This paper presents a novel generalised approach of the small-signal modelling of dual active bridge (DAB) DC/DC converter. The adopted analysis is based on a per-unit fundamental frequency representation of the DAB. The outcome of the proposed modelling approach is a small signal, linearised, state-space DAB model; which is considered as a main building block for future control applications. The developed small signal DAB model includes all possible degrees of freedom affecting the performance of the DAB; this includes the voltage conversion ratio to allow the study of all DAB operation modes (i.e.: unity-gain and buck/boost modes.). Furthermore, since triple phase shift control (TPS) is used in this development work, the proposed model incorporates phase shift in addition to duty ratios. This feature allows for bridge voltage regulation, which is essential for efficient DAB operation in the case of buck/boost operation. Another key achievement is that the proposed small signal modelling methodology can be applied to any bidirectional DC-DC converter regardless of ratings, parameter values and number of ports. Extensive simulation is carried out to verify the proposed analysis.

AB - This paper presents a novel generalised approach of the small-signal modelling of dual active bridge (DAB) DC/DC converter. The adopted analysis is based on a per-unit fundamental frequency representation of the DAB. The outcome of the proposed modelling approach is a small signal, linearised, state-space DAB model; which is considered as a main building block for future control applications. The developed small signal DAB model includes all possible degrees of freedom affecting the performance of the DAB; this includes the voltage conversion ratio to allow the study of all DAB operation modes (i.e.: unity-gain and buck/boost modes.). Furthermore, since triple phase shift control (TPS) is used in this development work, the proposed model incorporates phase shift in addition to duty ratios. This feature allows for bridge voltage regulation, which is essential for efficient DAB operation in the case of buck/boost operation. Another key achievement is that the proposed small signal modelling methodology can be applied to any bidirectional DC-DC converter regardless of ratings, parameter values and number of ports. Extensive simulation is carried out to verify the proposed analysis.

KW - bridge circuits

KW - mathematical model

KW - integrated circuit modeling

KW - steady-state

KW - inductors

KW - analytical models

KW - DC-DC power converters

KW - Dual active bridge

KW - DAB

KW - triple phase shift

KW - TPS

U2 - 10.1109/ICRERA.2018.8567014

DO - 10.1109/ICRERA.2018.8567014

M3 - Conference contribution

SN - 9781538659830

SP - 914

EP - 919

BT - 2018 International Conference on Renewable Energy Research and Applications (ICRERA): 7th International Conference on Renewable Energy Research and Applications (ICRERA)

PB - IEEE

ER -

Hebala OM, Aboushady AA, Ahmed KH, Burgess S, Prabhu R. Generalized small-signal modelling of dual active bridge DC/DC converter. In 2018 International Conference on Renewable Energy Research and Applications (ICRERA): 7th International Conference on Renewable Energy Research and Applications (ICRERA). IEEE. 2018. p. 914-919 https://doi.org/10.1109/ICRERA.2018.8567014