Constant-Current-Output and High-Efficiency Class E Inverter with Wide-Range Load

  • W. L. Zhou
  • , X. Z. Zhou
  • , S. Y. Luo
  • , H. Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

wireless charging always suffers efficiency degradation from load variation, which seriously constrains its wide application. In this research, a T-match network is introduced in Class-E inverter to achieve high efficiency by compressing wide-range equivalent impendence from load variations. In the meantime, optimization of capacitors among the T-match is conducted to maintain constant current output. In Advanced Design System(ADS), The improved Class E with T-match at 6.78MHz achieve power output ranging from 10 to 45 W, a constant current output of 1.4 A, and a transmission efficiency exceeding 85% under load variations from 10Ω to 50 Ω in the experiment.

Original languageEnglish
Title of host publication2024 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2024 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798331541095
DOIs
StatePublished - 2024
Event2024 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2024 - Chengdu, China
Duration: 28 Aug 202430 Aug 2024

Publication series

Name2024 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2024 - Proceedings

Conference

Conference2024 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2024
Country/TerritoryChina
CityChengdu
Period28/08/2430/08/24

Keywords

  • Class E inverter
  • High efficiency
  • MHz
  • T-match network
  • constant current output
  • wide load
  • wireless charge

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