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

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

Research output: Chapter in Book/Report/Conference proceedingConference 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 languageEnglish
Title of host publication2018 International Conference on Renewable Energy Research and Applications (ICRERA): 7th International Conference on Renewable Energy Research and Applications (ICRERA)
PublisherIEEE
Pages914-919
Number of pages6
ISBN (Electronic)9781538659823
ISBN (Print)9781538659830
DOIs
Publication statusPublished - 10 Dec 2018

Publication series

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

Fingerprint

DC-DC converters
Phase shift
Voltage control
Electric potential

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

Cite this

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
Hebala, Osama M. ; Aboushady, Ahmed A. ; Ahmed, Khaled H. ; Burgess, Sam ; Prabhu, Radhakrishna. / Generalized small-signal modelling of dual active bridge DC/DC converter. 2018 International Conference on Renewable Energy Research and Applications (ICRERA): 7th International Conference on Renewable Energy Research and Applications (ICRERA). IEEE, 2018. pp. 914-919
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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",
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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 proceedingConference contribution

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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

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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