Input‑series hybrid dual active bridge DC‑DC converter combined with LC resonant tank

Chao Fu; Chongwei Xu; Yuwei Sun

Input‑series hybrid dual active bridge DC‑DC converter combined with LC resonant tank

Chao Fu

Chongwei Xu

Yuwei Sun

Vol. 21, No. 8, pp. 1144-1154, Aug. 2021

10.1007/s43236-021-00264-2

Input-series

Hybrid dual active bridge

Super-resonant

Single phase-shift (SPS) control

Overall efficiency

Abstract

This paper presents an input-series hybrid dual active bridge (DAB) converter for efficiency improvement. The proposed converter is achieved by integrating a series resonant tank (SRT) into a single phase-shift (SPS) controlled DAB that shares one H-bridge at the secondary side. By using the super-resonant state of the LC tank, the phase correction of the secondary side H-bridge current can be obtained to realize zero voltage switching (ZVS), zero current switching (ZCS), and full load ZVS for the primary side bridges. In addition, the circulating current is reduced when compared to that of the traditional input-series DAB converter based on SPS control, which improves the overall efficiency. The system modelling and parameters design procedures are provided. Finally, a 1-kW experimental prototype was built, and the soft-switching performance was tested. The obtained results verify the effectiveness of the proposed topology and demonstrate a significant efficiency improvement.

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Cite this article

[IEEE Style]

C. Fu, C. Xu, Y. Sun, "Input‑series hybrid dual active bridge DC‑DC converter combined with LC resonant tank," Journal of Power Electronics, vol. 21, no. 8, pp. 1144-1154, 2021. DOI: 10.1007/s43236-021-00264-2.

[ACM Style]

Chao Fu, Chongwei Xu, and Yuwei Sun. 2021. Input‑series hybrid dual active bridge DC‑DC converter combined with LC resonant tank. Journal of Power Electronics, 21, 8, (2021), 1144-1154. DOI: 10.1007/s43236-021-00264-2.