Frequency Adaptive Topology to Realize Constant Output and Soft Switching for the WPT System

The main emphasis of research for battery wireless charger should be on four parts, including load-independent output to satisfy the charging requirement, zero voltage switching of power devices to increase transmission efficiency, minimum component counts to reduce cost and simple control strategy....

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Autores principales:	Bing Cheng, Liangzong He
Formato:	article
Lenguaje:	EN
Publicado:	IEEE 2021
Materias:	Wireless power transfer (WPT) adaptive branch load estimation load-independent output zero voltage switching (ZVS) Electrical engineering. Electronics. Nuclear engineering TK1-9971
Acceso en línea:	https://doaj.org/article/42eedaa984da456289f641361052cc34
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spelling	oai:doaj.org-article:42eedaa984da456289f641361052cc342021-11-18T00:08:13ZFrequency Adaptive Topology to Realize Constant Output and Soft Switching for the WPT System2169-353610.1109/ACCESS.2021.3123471https://doaj.org/article/42eedaa984da456289f641361052cc342021-01-01T00:00:00Zhttps://ieeexplore.ieee.org/document/9590547/https://doaj.org/toc/2169-3536The main emphasis of research for battery wireless charger should be on four parts, including load-independent output to satisfy the charging requirement, zero voltage switching of power devices to increase transmission efficiency, minimum component counts to reduce cost and simple control strategy. However, the existing studies have not taken these all into account, which greatly limits the application of battery wireless charger. This paper proposes a WPT system based on the simplest S/S compensation network. By replacing the secondary compensation capacitor with an <inline-formula> <tex-math notation="LaTeX">$L$ </tex-math></inline-formula>-<inline-formula> <tex-math notation="LaTeX">$C$ </tex-math></inline-formula> branch, the same circuit structure can realize the load-independent constant current (CC) and voltage (CV) output with zero voltage switching at two different switching frequency. A current amplitude detection circuit is added in the primary side to determine the switching point of CC mode and CV mode. Compared with existing research, the component numbers in proposed circuit are less, the control strategy is easier to implement and avoids the communication between the primary and secondary sides. Finally, a wireless battery charger for 60V/3.6A is built to verify the feasibility of proposed system. And the experimental results perform well on realizing a load-independent output with ZVS operation.Bing ChengLiangzong HeIEEEarticleWireless power transfer (WPT)adaptive branchload estimationload-independent outputzero voltage switching (ZVS)Electrical engineering. Electronics. Nuclear engineeringTK1-9971ENIEEE Access, Vol 9, Pp 148884-148893 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Wireless power transfer (WPT) adaptive branch load estimation load-independent output zero voltage switching (ZVS) Electrical engineering. Electronics. Nuclear engineering TK1-9971
spellingShingle	Wireless power transfer (WPT) adaptive branch load estimation load-independent output zero voltage switching (ZVS) Electrical engineering. Electronics. Nuclear engineering TK1-9971 Bing Cheng Liangzong He Frequency Adaptive Topology to Realize Constant Output and Soft Switching for the WPT System
description	The main emphasis of research for battery wireless charger should be on four parts, including load-independent output to satisfy the charging requirement, zero voltage switching of power devices to increase transmission efficiency, minimum component counts to reduce cost and simple control strategy. However, the existing studies have not taken these all into account, which greatly limits the application of battery wireless charger. This paper proposes a WPT system based on the simplest S/S compensation network. By replacing the secondary compensation capacitor with an <inline-formula> <tex-math notation="LaTeX">$L$ </tex-math></inline-formula>-<inline-formula> <tex-math notation="LaTeX">$C$ </tex-math></inline-formula> branch, the same circuit structure can realize the load-independent constant current (CC) and voltage (CV) output with zero voltage switching at two different switching frequency. A current amplitude detection circuit is added in the primary side to determine the switching point of CC mode and CV mode. Compared with existing research, the component numbers in proposed circuit are less, the control strategy is easier to implement and avoids the communication between the primary and secondary sides. Finally, a wireless battery charger for 60V/3.6A is built to verify the feasibility of proposed system. And the experimental results perform well on realizing a load-independent output with ZVS operation.
format	article
author	Bing Cheng Liangzong He
author_facet	Bing Cheng Liangzong He
author_sort	Bing Cheng
title	Frequency Adaptive Topology to Realize Constant Output and Soft Switching for the WPT System
title_short	Frequency Adaptive Topology to Realize Constant Output and Soft Switching for the WPT System
title_full	Frequency Adaptive Topology to Realize Constant Output and Soft Switching for the WPT System
title_fullStr	Frequency Adaptive Topology to Realize Constant Output and Soft Switching for the WPT System
title_full_unstemmed	Frequency Adaptive Topology to Realize Constant Output and Soft Switching for the WPT System
title_sort	frequency adaptive topology to realize constant output and soft switching for the wpt system
publisher	IEEE
publishDate	2021
url	https://doaj.org/article/42eedaa984da456289f641361052cc34
work_keys_str_mv	AT bingcheng frequencyadaptivetopologytorealizeconstantoutputandsoftswitchingforthewptsystem AT liangzonghe frequencyadaptivetopologytorealizeconstantoutputandsoftswitchingforthewptsystem
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Frequency Adaptive Topology to Realize Constant Output and Soft Switching for the WPT System

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