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Single-Stage Duty-Controlled Half-Bridge Inverter for Compact Capacitive Power Transfer System

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Abstract
Capacitive wireless power transfer (CPT) is becoming a promising alternative to inductive power transfer (IPT) due to low costs and the simplicity of capacitive coupler. This paper presents a new architecture that makes CPT systems even simpler and easier to control. In the proposed scheme, a wide input voltage range is achieved by duty control while the output voltage is inherently load-independent, and this eliminates the need for an extra DC-DC converter. Our system also provides an extended zero-voltageswitching (ZVS) range to deal with both input and load variations. We carried out ZVS analysis for each MOSFET switch and based on this an optimal design was proposed. We implemented a prototype 160 W CPT system based on our design procedure, and its performance was then verified under a universal input voltage with load variations from 200-1000 Omega. A DC-DC efficiency as high as 88.2%was achieved, showing the value of the proposed topology.
Author(s)
쭝 탄 띤최성진
Issued Date
2021
Type
Article
Keyword
Asymmetric half-bridgecapacitive wireless power transferzero voltage switching
DOI
10.1109/ACCESS.2021.3108193
URI
https://oak.ulsan.ac.kr/handle/2021.oak/9028
https://ulsan-primo.hosted.exlibrisgroup.com/primo-explore/fulldisplay?docid=TN_cdi_crossref_primary_10_1109_ACCESS_2021_3108193&context=PC&vid=ULSAN&lang=ko_KR&search_scope=default_scope&adaptor=primo_central_multiple_fe&tab=default_tab&query=any,contains,Single-Stage%20Duty-Controlled%20Half-Bridge%20Inverter%20for%20Compact%20Capacitive%20Power%20Transfer%20System&offset=0&pcAvailability=true
Publisher
IEEE ACCESS
Location
미국
Language
영어
ISSN
2169-3536
Citation Volume
9
Citation Number
1
Citation Start Page
119250
Citation End Page
119261
Appears in Collections:
Engineering > Electrical engineering
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