Multi-Frequency Multi-Power One-to-Many Wireless Power Transfer System

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Wei Liu
  • K. T. Chau
  • Christopher H. T. Lee
  • Wei Han
  • W. H. Lam

Detail(s)

Original languageEnglish
Article number8653990
Journal / PublicationIEEE Transactions on Magnetics
Volume55
Issue number7
Online published27 Feb 2019
Publication statusPublished - Jul 2019
Externally publishedYes

Abstract

This paper proposes and implements a novel multi-frequency multi-power wireless power transfer (MFMP-WPT) system based on one single transmitter for simultaneously and compatibly energizing multi-standard receivers. Generally, implementing a multi-frequency WPT often requires a compromise in system complexity, control difficulty, switching frequency, or transmission efficiency. By using only a single transmitter with an artful inverter topology, the proposed MFMP-WPT system can effectively achieve multi-frequency multi-magnitude superposition and switching frequency reduction while maintaining the control fitness and convenience of square-wave generation with 50% duty cycle. Moreover, by switching at the fundamental frequency in a range of 80-130 kHz, the single transmitter becomes competent for one-to-many MFMP-WPT operation for diverse wireless power on-demands. Consequently, the fundamental and high-order harmonic wireless energies with multiple power levels can be, respectively, picked up by the multi-standard receivers, depending on their energy requirements. The experimental transmission and system efficiencies can reach 81.57% and 64.74% under MFMP-WPT, respectively. Theoretical analysis, computer simulation, and experimental results are provided to verify the feasibility of the proposed MFMP-WPT system.

Research Area(s)

  • Multi-frequency multi-power (MFMP), one to many, single transmitter, wireless power transfer (WPT)

Citation Format(s)

Multi-Frequency Multi-Power One-to-Many Wireless Power Transfer System. / Liu, Wei; Chau, K. T.; Lee, Christopher H. T.; Jiang, Chaoqiang; Han, Wei; Lam, W. H.

In: IEEE Transactions on Magnetics, Vol. 55, No. 7, 8653990, 07.2019.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review