Adaptive Capacitive Power Transfer System utilizing Switch-Controlled Capacitor and DC-DC Converter

Tarek M. Mostafa*, Moutazbellah Khater, Shehab Ahmed

*Corresponding author for this work

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

1 Scopus citations

Abstract

Capacitive power transfer has received a lot of attention as one of the new wireless power transfer technologies due to the flexibility of the coupling structure, low standing losses, and low Electromagnetic Interference. However, the ability to deliver power degrades significantly with load variations and coupling misalignment. This degradation represents a serious issue for the emerging technology. In this paper, a switch-controlled capacitor (SCC) and a buck-boost DC-DC converter have been added on the transmitter side and the receiving side of the conventional system, respectively. The SCC provides a mean of compensation for the coupling variations while a variable duty cycle DC-DC converter is employed to mitigate the load variation effect. A 26 W system is modeled and simulated, utilizing actual component models for verification. Compared to a typical system, the proposed system could achieve constant output power against variations of ±75% in the coupling interface value and a wide range of load variations from 5 Ω to 1 kΩ.

Original languageEnglish (US)
Title of host publication2023 IEEE Wireless Power Technology Conference and Expo, WPTCE 2023 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9798350337372
DOIs
StatePublished - 2023
Event2023 IEEE Wireless Power Technology Conference and Expo, WPTCE 2023 - San Diego, United States
Duration: Jun 4 2023Jun 8 2023

Publication series

Name2023 IEEE Wireless Power Technology Conference and Expo, WPTCE 2023 - Proceedings

Conference

Conference2023 IEEE Wireless Power Technology Conference and Expo, WPTCE 2023
Country/TerritoryUnited States
CitySan Diego
Period06/4/2306/8/23

Keywords

  • capacitive power transfer (CPT)
  • switch-controlled capacitor
  • wireless power transfer (WPT)

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Control and Optimization
  • Instrumentation

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