An RMS Current-Based Adaptive Voltage Ratio Control for Dual Active Bridge Converter

Haoran Ma; Yueshi Guan; Jianwei Mai; Yijie Wang; Dianguo Xu

doi:10.1109/CIEEC69682.2026.11572032

An RMS Current-Based Adaptive Voltage Ratio Control for Dual Active Bridge Converter

Haoran Ma^*
, Yueshi Guan
, Jianwei Mai
, Yijie Wang
, Dianguo Xu

^*Corresponding author for this work

School of Electrical Engineering and Automation, Harbin Institute of Technology

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

Abstract

This paper proposes an adaptive optimal extended phase-shift (AO-EPS) control strategy to improve dual active bridge (DAB) converter performance over wide input-voltage and load ranges. By adaptively adjusting the equivalent voltage ratio according to instantaneous load power, the method minimizes the inductor RMS current and mitigates the excessive RMS current seen with fixed-ratio control under light-load and voltage-mismatched conditions. Tests on a 300 W GaN-based prototype show that, compared with conventional single-phase-shift control, AO-EPS reduces conduction losses across the full load range, with especially notable efficiency gains at light load.

Original language	English
Title of host publication	Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	1978-1983
Number of pages	6
ISBN (Electronic)	9798331549558
DOIs	https://doi.org/10.1109/CIEEC69682.2026.11572032
State	Published - 2026
Externally published	Yes
Event	9th International Electrical and Energy Conference, CIEEC 2026 - Tianjin, China Duration: 15 May 2026 → 17 May 2026

Publication series

Name	Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026

Conference

Conference	9th International Electrical and Energy Conference, CIEEC 2026
Country/Territory	China
City	Tianjin
Period	15/05/26 → 17/05/26

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

RMS current optimization
adaptive optimal extended phase-shift (AO-EPS)
dual active bridge (DAB)

Access to Document

10.1109/CIEEC69682.2026.11572032

Cite this

Ma, H., Guan, Y., Mai, J., Wang, Y., & Xu, D. (2026). An RMS Current-Based Adaptive Voltage Ratio Control for Dual Active Bridge Converter. In Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026 (pp. 1978-1983). (Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/CIEEC69682.2026.11572032

Ma, Haoran ; Guan, Yueshi ; Mai, Jianwei et al. / An RMS Current-Based Adaptive Voltage Ratio Control for Dual Active Bridge Converter. Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026. Institute of Electrical and Electronics Engineers Inc., 2026. pp. 1978-1983 (Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026).

@inproceedings{d41434ed0e154cd09fb04fa2b3ad65c3,

title = "An RMS Current-Based Adaptive Voltage Ratio Control for Dual Active Bridge Converter",

abstract = "This paper proposes an adaptive optimal extended phase-shift (AO-EPS) control strategy to improve dual active bridge (DAB) converter performance over wide input-voltage and load ranges. By adaptively adjusting the equivalent voltage ratio according to instantaneous load power, the method minimizes the inductor RMS current and mitigates the excessive RMS current seen with fixed-ratio control under light-load and voltage-mismatched conditions. Tests on a 300 W GaN-based prototype show that, compared with conventional single-phase-shift control, AO-EPS reduces conduction losses across the full load range, with especially notable efficiency gains at light load.",

keywords = "RMS current optimization, adaptive optimal extended phase-shift (AO-EPS), dual active bridge (DAB)",

author = "Haoran Ma and Yueshi Guan and Jianwei Mai and Yijie Wang and Dianguo Xu",

note = "Publisher Copyright: {\textcopyright} 2026 IEEE.; 9th International Electrical and Energy Conference, CIEEC 2026 ; Conference date: 15-05-2026 Through 17-05-2026",

year = "2026",

doi = "10.1109/CIEEC69682.2026.11572032",

language = "英语",

series = "Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

pages = "1978--1983",

booktitle = "Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026",

address = "美国",

}

Ma, H, Guan, Y, Mai, J, Wang, Y & Xu, D 2026, An RMS Current-Based Adaptive Voltage Ratio Control for Dual Active Bridge Converter. in Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026. Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026, Institute of Electrical and Electronics Engineers Inc., pp. 1978-1983, 9th International Electrical and Energy Conference, CIEEC 2026, Tianjin, China, 15/05/26. https://doi.org/10.1109/CIEEC69682.2026.11572032

An RMS Current-Based Adaptive Voltage Ratio Control for Dual Active Bridge Converter. / Ma, Haoran; Guan, Yueshi; Mai, Jianwei et al.
Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026. Institute of Electrical and Electronics Engineers Inc., 2026. p. 1978-1983 (Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026).

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

TY - GEN

T1 - An RMS Current-Based Adaptive Voltage Ratio Control for Dual Active Bridge Converter

AU - Ma, Haoran

AU - Guan, Yueshi

AU - Mai, Jianwei

AU - Wang, Yijie

AU - Xu, Dianguo

PY - 2026

Y1 - 2026

N2 - This paper proposes an adaptive optimal extended phase-shift (AO-EPS) control strategy to improve dual active bridge (DAB) converter performance over wide input-voltage and load ranges. By adaptively adjusting the equivalent voltage ratio according to instantaneous load power, the method minimizes the inductor RMS current and mitigates the excessive RMS current seen with fixed-ratio control under light-load and voltage-mismatched conditions. Tests on a 300 W GaN-based prototype show that, compared with conventional single-phase-shift control, AO-EPS reduces conduction losses across the full load range, with especially notable efficiency gains at light load.

AB - This paper proposes an adaptive optimal extended phase-shift (AO-EPS) control strategy to improve dual active bridge (DAB) converter performance over wide input-voltage and load ranges. By adaptively adjusting the equivalent voltage ratio according to instantaneous load power, the method minimizes the inductor RMS current and mitigates the excessive RMS current seen with fixed-ratio control under light-load and voltage-mismatched conditions. Tests on a 300 W GaN-based prototype show that, compared with conventional single-phase-shift control, AO-EPS reduces conduction losses across the full load range, with especially notable efficiency gains at light load.

KW - RMS current optimization

KW - adaptive optimal extended phase-shift (AO-EPS)

KW - dual active bridge (DAB)

UR - https://www.scopus.com/pages/publications/105044571473

U2 - 10.1109/CIEEC69682.2026.11572032

DO - 10.1109/CIEEC69682.2026.11572032

M3 - 会议稿件

AN - SCOPUS:105044571473

T3 - Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026

SP - 1978

EP - 1983

BT - Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 9th International Electrical and Energy Conference, CIEEC 2026

Y2 - 15 May 2026 through 17 May 2026

ER -

Ma H, Guan Y, Mai J, Wang Y, Xu D. An RMS Current-Based Adaptive Voltage Ratio Control for Dual Active Bridge Converter. In Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026. Institute of Electrical and Electronics Engineers Inc. 2026. p. 1978-1983. (Proceedings of 2026 IEEE 9th International Electrical and Energy Conference, CIEEC 2026). doi: 10.1109/CIEEC69682.2026.11572032

An RMS Current-Based Adaptive Voltage Ratio Control for Dual Active Bridge Converter

Abstract

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UN SDGs

Keywords

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