A 45-W Two-Stage Wireless Fast Charger Using Unregulated Inductive Power Transfer

Most of the existing wireless offline chargers would employ redundant power conversion and isolation stages to charge a low-voltage battery, which leads to limited overall efficiency. In order to address the redundancy issue, this article proposes a wireless fast charger by using a two-stage configu...

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Published inIEEE journal of emerging and selected topics in industrial electronics (Print) Vol. 2; no. 3; pp. 287 - 296
Main Authors Zhao, Peng, Zheng, Guangce, He, Rong, Liu, Yu, Fu, Minfan
Format Journal Article
LanguageEnglish
Published New York IEEE 01.07.2021
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Batteries
Buck converters
Charging
Efficiency
Electronic devices
Energy conversion
Evaluation
Fast charger
high step-down voltage ratio
high-order resonance
Power transfer
Redundancy
Regulation
Stress
unregulated inductive power transfer
Voltage control
Voltage gain
Wireless communication
Zero voltage switching
zero-voltage-switching (ZVS) model
Online AccessGet full text
ISSN2687-9735
2687-9743
DOI10.1109/JESTIE.2021.3061959

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Abstract Most of the existing wireless offline chargers would employ redundant power conversion and isolation stages to charge a low-voltage battery, which leads to limited overall efficiency. In order to address the redundancy issue, this article proposes a wireless fast charger by using a two-stage configuration. An unregulated inductive power transfer (IPT) stage can not only offer galvanic isolation, but also provide high step-down voltage ratio, and then, only a simple buck converter is needed for voltage regulation. This article evaluates the influence of voltage gain on efficiency and voltage stress of an LCC-C compensated IPT stage. The zero-voltage-switching (ZVS) lost mechanism is also studied and evaluated by a proposed ZVS model. Finally, a 45-W fast charger prototype is designed for 264-V/12-V conversion. The measured peak efficiency is 78%, which is much higher than the Qi-based charger.
AbstractList Most of the existing wireless offline chargers would employ redundant power conversion and isolation stages to charge a low-voltage battery, which leads to limited overall efficiency. In order to address the redundancy issue, this article proposes a wireless fast charger by using a two-stage configuration. An unregulated inductive power transfer (IPT) stage can not only offer galvanic isolation, but also provide high step-down voltage ratio, and then, only a simple buck converter is needed for voltage regulation. This article evaluates the influence of voltage gain on efficiency and voltage stress of an LCC-C compensated IPT stage. The zero-voltage-switching (ZVS) lost mechanism is also studied and evaluated by a proposed ZVS model. Finally, a 45-W fast charger prototype is designed for 264-V/12-V conversion. The measured peak efficiency is 78%, which is much higher than the Qi-based charger.
Author Liu, Yu
Fu, Minfan
Zhao, Peng
Zheng, Guangce
He, Rong
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Cites_doi 10.1109/TIE.2019.2896279
10.1109/TIE.2017.2745471
10.1109/TMTT.2019.2929143
10.1109/TPEL.2018.2879958
10.1109/TPEL.2014.2347071
10.1109/TVT.2014.2347006
10.1109/TIE.2017.2784338
10.1109/ECCE.2010.5617767
10.1109/TPEL.2015.2396471
10.1109/TIE.2016.2580525
10.1109/JESTPE.2019.2916258
10.1109/TPEL.2016.2637931
10.1109/TPEL.2013.2272764
10.1109/TIE.2016.2574993
10.1109/ICPEICES.2016.7853084
10.1109/TMTT.2015.2398422
10.1109/TPEL.2014.2309531
10.1109/TPEL.2014.2316170
10.1109/TPEL.2017.2748391
10.1109/ECCE.2009.5316065
10.1109/ICCE-Berlin.2012.6336483
10.1109/TPEL.2017.2785365
10.1109/TPEL.2016.2590571
10.1109/IECON.2019.8927484
10.1109/TPEL.2018.2839769
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References ref13
ref12
ref15
ref14
ref11
ref10
xue (ref27) 0
ref2
ref1
ref17
ref16
ref19
ref18
ref24
ref23
ref26
ref25
ref20
sun (ref22) 0
mao (ref21) 0
ref28
ref8
ref7
ref9
ref4
ref3
ref6
ref5
References_xml – ident: ref24
  doi: 10.1109/TIE.2019.2896279
– ident: ref15
  doi: 10.1109/TIE.2017.2745471
– ident: ref14
  doi: 10.1109/TMTT.2019.2929143
– ident: ref16
  doi: 10.1109/TPEL.2018.2879958
– start-page: 3743
  year: 0
  ident: ref27
  article-title: Single-stage 6.78 MHz power-amplifier design using high-voltage GaN power ICs for wireless charging applications
  publication-title: Proc IEEE Appl Power Electron Conf Expo
– ident: ref28
  doi: 10.1109/TPEL.2014.2347071
– ident: ref11
  doi: 10.1109/TVT.2014.2347006
– ident: ref6
  doi: 10.1109/TIE.2017.2784338
– ident: ref20
  doi: 10.1109/ECCE.2010.5617767
– start-page: 1
  year: 0
  ident: ref22
  article-title: High power density, high efficiency system two-stage power architecture for laptop computers
  publication-title: Proc 37th IEEE Power Electron Spec Conf
– ident: ref1
  doi: 10.1109/TPEL.2015.2396471
– ident: ref23
  doi: 10.1109/TIE.2016.2580525
– ident: ref17
  doi: 10.1109/JESTPE.2019.2916258
– ident: ref8
  doi: 10.1109/TPEL.2016.2637931
– ident: ref2
  doi: 10.1109/TPEL.2013.2272764
– ident: ref7
  doi: 10.1109/TIE.2016.2574993
– ident: ref19
  doi: 10.1109/ICPEICES.2016.7853084
– ident: ref5
  doi: 10.1109/TMTT.2015.2398422
– ident: ref26
  doi: 10.1109/TPEL.2014.2309531
– ident: ref3
  doi: 10.1109/TPEL.2014.2316170
– ident: ref12
  doi: 10.1109/TPEL.2017.2748391
– ident: ref25
  doi: 10.1109/ECCE.2009.5316065
– ident: ref4
  doi: 10.1109/ICCE-Berlin.2012.6336483
– ident: ref9
  doi: 10.1109/TPEL.2017.2785365
– ident: ref10
  doi: 10.1109/TPEL.2016.2590571
– ident: ref18
  doi: 10.1109/IECON.2019.8927484
– ident: ref13
  doi: 10.1109/TPEL.2018.2839769
– start-page: 382
  year: 0
  ident: ref21
  article-title: Efficiency impacts of 1.2 kV silicon carbide MOSFETs for isolated two-stage AC-DC power conversion
  publication-title: Proc 1st Workshop Wide Bandgap Power Devices Appl Asia
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Snippet Most of the existing wireless offline chargers would employ redundant power conversion and isolation stages to charge a low-voltage battery, which leads to...
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SubjectTerms Batteries
Buck converters
Charging
Efficiency
Electronic devices
Energy conversion
Evaluation
Fast charger
high step-down voltage ratio
high-order resonance
Power transfer
Redundancy
Regulation
Stress
unregulated inductive power transfer
Voltage control
Voltage gain
Wireless communication
Zero voltage switching
zero-voltage-switching (ZVS) model
Title A 45-W Two-Stage Wireless Fast Charger Using Unregulated Inductive Power Transfer
URI https://ieeexplore.ieee.org/document/9362124
https://www.proquest.com/docview/2544298468
Volume 2
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