Design of pseudo‑single‑stage‑type isolated/bidirectional converter for battery formation equipment

Hyuk-Jin Kwon; Jae-Hyuck Choi; Hyeok-Min Kwon; Tae-Woong Shin; Seung-Won Choi; Jun-Young Lee

Design of pseudo‑single‑stage‑type isolated/bidirectional converter for battery formation equipment

Vol. 22, No. 6, pp. 893-902, Jun. 2022

10.1007/s43236-022-00412-2

Battery charger

Battery formation

DC/DC converter

Abstract

In this study, we propose a method to improve the effi ciency of battery formation equipment. The conventional large-capacity isolated bidirectional DC/DC converter and multichannel buck converter structure have low effi ciency and power density because of the high-current design. A pseudo-single-stage-type power stage and its design are presented to improve this condition. With the proposed 215 W (5 V/43 A) class prototype, which applies a distributed design method, higher effi - ciency and power density are achieved compared with those of the existing formation method. Moreover, additional circuits are not needed to reduce noise and ringing voltage because all circuits consist of LLLC + buck converter, which applies a voltage-fed method.

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Cite this article

[IEEE Style]

H. Kwon, J. Choi, H. Kwon, T. Shin, S. Choi, J. Lee, "Design of pseudo‑single‑stage‑type isolated/bidirectional converter for battery formation equipment," Journal of Power Electronics, vol. 22, no. 6, pp. 893-902, 2022. DOI: 10.1007/s43236-022-00412-2.

[ACM Style]

Hyuk-Jin Kwon, Jae-Hyuck Choi, Hyeok-Min Kwon, Tae-Woong Shin, Seung-Won Choi, and Jun-Young Lee. 2022. Design of pseudo‑single‑stage‑type isolated/bidirectional converter for battery formation equipment. Journal of Power Electronics, 22, 6, (2022), 893-902. DOI: 10.1007/s43236-022-00412-2.