Modulation of 2/3-Level Dual-Active-Bridge DC-DC Converters for Soft-Switching and Minimum Current Stress

Chaochao Song, Yongheng Yang*, Zhongting Tang, Frede Blaabjerg

*Kontaktforfatter

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

6 Citationer (Scopus)

Abstract

This paper proposes an optimal modulation scheme for two-three (2/3)-level dual-active-bridge (DAB) DC-DC converters to guarantee zero-voltage-switching (ZVS) operation and minimize the current stress. Based on the unified ZVS principle, six operating modes are defined and constraints of each ZVS mode are then obtained. According to the operating modes, the power transmission model and current stress under all voltage conversion ratios are derived for optimization. The analytical solutions for minimum current stresses are obtained by using the Lagrange multiplier method with Karush-Kuhn-Tucker conditions. With the proposed modulation scheme, both the conduction and switching losses can be reduced, and thus, the entire efficiency can be improved. Finally, simulation results verify the theoretical analysis and the performance of the optimal modulation scheme.
OriginalsprogEngelsk
TitelIECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society
Antal sider6
ForlagIEEE
Publikationsdatonov. 2020
Sider2913-2918
ISBN (Trykt)978-1-7281-5415-2
ISBN (Elektronisk)978-1-7281-5414-5
DOI
StatusUdgivet - nov. 2020
BegivenhedIECON 2020 - 46th Annual Conference of the IEEE Industrial Electronics Society - Online
Varighed: 18 okt. 202021 okt. 2020
https://www.iecon2020.org/

Konference

KonferenceIECON 2020 - 46th Annual Conference of the IEEE Industrial Electronics Society
LokationOnline
Periode18/10/202021/10/2020
Internetadresse
NavnProceedings of the Annual Conference of the IEEE Industrial Electronics Society
ISSN1553-572X

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