A Multi-load Capacitive Power Transfer System with Load-Independent Characteristic for Reefer Container Application

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

11 Scopus Citations
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  • Wei Liu
  • Bo Luo
  • Yefei Xu
  • Shuaishuai Pan
  • Wei Zhou
  • Ruikun Mai

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Original languageEnglish
Pages (from-to)6194-6205
Journal / PublicationIEEE Transactions on Power Electronics
Issue number5
Online published3 Dec 2021
Publication statusPublished - May 2022


In order to supply power wirelessly to reefer containers without constructing an extra power tower, this article proposed a novel multi-load capacitive power transfer (CPT) system with an SP-CL isolation compensation topology. Unlike the traditional multi-load CPT system, where receivers function solely as power consumers, in the proposed system, each receiver not only supplies power to the connected load but transfers power wirelessly to the next receivers. The coupler model with the cross-coupling of metal containers is established for reefer container application. Then, the SP-CL isolation compensation topology analysis based on the single circuit is carried out to achieve the load-independent characteristics with constant output voltage. The output characteristics and efficiency of the proposed CPT system are analyzed, considering the impact of the parasitic resistance. Besides, the voltage stress of passive components is optimized to design the experiment system. A 1.8kW prototype with three loads is built to validate the effectiveness of the proposed CPT system. The equal power distribution (600W and 600W and 600W) is achieved, and the system efficiency can reach 83.7%.

Research Area(s)

  • Capacitive power transfer (CPT), Containers, Couplers, Integrated circuit modeling, load-independent, multiload, Poles and towers, Receivers, reefer container, Topology, Voltage

Citation Format(s)