Analysis and Output Power Control of Unidirectional Secondary-Resonant Single-Active-Half-Bridge DC-DC Converter

Development of high-frequency-isolated DC-DC converters is underway for charging and discharging electric vehicle batteries. As a charger, a Single Active Bridge (SAB) converter, which is composed of a primary full-bridge converter, a high-frequency transformer, and a secondary full-bridge diode rec...

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Autores principales:	Cao Anh Tuan, Takaharu Takeshita
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	DC-DC converter isolated converter half-bridge soft switching unidirectional converter battery charger Technology T
Acceso en línea:	https://doaj.org/article/b4a6bab8158b4c1e8bc89520d97162fd
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spelling	oai:doaj.org-article:b4a6bab8158b4c1e8bc89520d97162fd2021-11-11T16:08:43ZAnalysis and Output Power Control of Unidirectional Secondary-Resonant Single-Active-Half-Bridge DC-DC Converter10.3390/en142174321996-1073https://doaj.org/article/b4a6bab8158b4c1e8bc89520d97162fd2021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1073/14/21/7432https://doaj.org/toc/1996-1073Development of high-frequency-isolated DC-DC converters is underway for charging and discharging electric vehicle batteries. As a charger, a Single Active Bridge (SAB) converter, which is composed of a primary full-bridge converter, a high-frequency transformer, and a secondary full-bridge diode rectifier circuit, has been proposed as a unidirectional high frequency isolated DC-DC converter. In this paper, as a simple circuit configuration, a Secondary-Resonant Single-Active-Half-Bridge (SR-SAHB) converter, in which the primary and secondary circuits of the SAB converter are both half-bridge circuits, and a resonant capacitor connected in parallel to each secondary diode, is created. Due to the partial resonance on the secondary side, power transmission with unity transformer turn ratio and unity voltage conversion ratio can be realized, and a high total input power factor of the transformer can be achieved. As a result, the maximum voltage and current of the switching devices and the transformer voltage can be reduced. Moreover, soft switching in all commutations can be realized. The operation waveform is analyzed, and output power control is derived using the variable frequency control method. The effectiveness of the proposed SR-SAHB has been verified by experimental results using a 2.4 kW 20 kHz, 265 V laboratory prototype.Cao Anh TuanTakaharu TakeshitaMDPI AGarticleDC-DC converterisolated converterhalf-bridgesoft switchingunidirectional converterbattery chargerTechnologyTENEnergies, Vol 14, Iss 7432, p 7432 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	DC-DC converter isolated converter half-bridge soft switching unidirectional converter battery charger Technology T
spellingShingle	DC-DC converter isolated converter half-bridge soft switching unidirectional converter battery charger Technology T Cao Anh Tuan Takaharu Takeshita Analysis and Output Power Control of Unidirectional Secondary-Resonant Single-Active-Half-Bridge DC-DC Converter
description	Development of high-frequency-isolated DC-DC converters is underway for charging and discharging electric vehicle batteries. As a charger, a Single Active Bridge (SAB) converter, which is composed of a primary full-bridge converter, a high-frequency transformer, and a secondary full-bridge diode rectifier circuit, has been proposed as a unidirectional high frequency isolated DC-DC converter. In this paper, as a simple circuit configuration, a Secondary-Resonant Single-Active-Half-Bridge (SR-SAHB) converter, in which the primary and secondary circuits of the SAB converter are both half-bridge circuits, and a resonant capacitor connected in parallel to each secondary diode, is created. Due to the partial resonance on the secondary side, power transmission with unity transformer turn ratio and unity voltage conversion ratio can be realized, and a high total input power factor of the transformer can be achieved. As a result, the maximum voltage and current of the switching devices and the transformer voltage can be reduced. Moreover, soft switching in all commutations can be realized. The operation waveform is analyzed, and output power control is derived using the variable frequency control method. The effectiveness of the proposed SR-SAHB has been verified by experimental results using a 2.4 kW 20 kHz, 265 V laboratory prototype.
format	article
author	Cao Anh Tuan Takaharu Takeshita
author_facet	Cao Anh Tuan Takaharu Takeshita
author_sort	Cao Anh Tuan
title	Analysis and Output Power Control of Unidirectional Secondary-Resonant Single-Active-Half-Bridge DC-DC Converter
title_short	Analysis and Output Power Control of Unidirectional Secondary-Resonant Single-Active-Half-Bridge DC-DC Converter
title_full	Analysis and Output Power Control of Unidirectional Secondary-Resonant Single-Active-Half-Bridge DC-DC Converter
title_fullStr	Analysis and Output Power Control of Unidirectional Secondary-Resonant Single-Active-Half-Bridge DC-DC Converter
title_full_unstemmed	Analysis and Output Power Control of Unidirectional Secondary-Resonant Single-Active-Half-Bridge DC-DC Converter
title_sort	analysis and output power control of unidirectional secondary-resonant single-active-half-bridge dc-dc converter
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/b4a6bab8158b4c1e8bc89520d97162fd
work_keys_str_mv	AT caoanhtuan analysisandoutputpowercontrolofunidirectionalsecondaryresonantsingleactivehalfbridgedcdcconverter AT takaharutakeshita analysisandoutputpowercontrolofunidirectionalsecondaryresonantsingleactivehalfbridgedcdcconverter
_version_	1718432435979419648

Analysis and Output Power Control of Unidirectional Secondary-Resonant Single-Active-Half-Bridge DC-DC Converter

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