Dual-band multi-receiver wireless power transfer: Architecture, topology, and control

Ming Liu, Minjie Chen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Wireless power transfer (WPT) via near-field magnetic coupling is an enabling technology for many applications including consumer electronics and electric vehicles. A few WPT standards have been established with frequencies ranging from kHz to MHz. MHz operation offers smaller size and higher tolerance to coil misalignment, and kHz operation offers higher efficiency and higher power rating. This paper presents a WPT architecture with new transmitter and receiver topologies that are reconfigurable for dual-band operation. On the transmitter side, we developed a novel architecture based on the reactance steering network (RSN) which can seamlessly compensate an arbitrary load impedance for radio-frequency (RF) power amplifiers. It can transmit power at two frequencies (kHz and MHz range) with decoupled power modulation. On the receiver side, we developed a reconfigurable dual-band rectifier that can achieve a power density of 300 W/inch at both 100 kHz and 13.56 MHz with very low component count. A dual-band reconfigurable WPT system comprising a dual-band transmitter and multiple dualband receivers has been built and tested. The RSN-based dualband transmitter can efficiently and simultaneously deliver 15 W of power to multiple receivers at both 100 kHz and 13.56 MHz.

Original languageEnglish (US)
Title of host publication34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages851-859
Number of pages9
ISBN (Electronic)9781538683309
DOIs
StatePublished - May 24 2019
Event34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019 - Anaheim, United States
Duration: Mar 17 2019Mar 21 2019

Publication series

NameConference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
Volume2019-March

Conference

Conference34th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2019
CountryUnited States
CityAnaheim
Period3/17/193/21/19

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Keywords

  • Dual-band wireless power transfer
  • High frequency power conversion
  • Reactance steering network

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