Initial Current Injection Method of a Direct Three-Phase to Single-Phase AC/AC Converter for Inductive Charger

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This paper explains an initial current injection method of a direct three-phase to single-phase AC/AC converter for an inductive charger. The converter has a lesser number of switches than a matrix converter and uses a resonant circuit to utilize zero-current switching. The method applies a DC resonant charging to charge a primary resonant capacitor, by taking advantage of the converter topology. The charged voltage is used to boost the initial current since in practice an affordable current transducer has only a limited measurement range, due to its accuracy and noise characteristics. The method is applied to kick-start the inductive charger without adding an amplification circuit to the current transducer output. Simulation results are presented to verify theoretical calculations.

Original languageEnglish
Title of host publicationProceedings of the 2018 International Power Electronics Conference, IPEC-Niigata - ECCE Asia 2018
Number of pages7
ISBN (Electronic)9784886864055
Publication statusPublished - 22 Oct 2018
MoE publication typeA4 Article in a conference publication
EventInternational Power Electronics Conference - Niigata, Japan
Duration: 20 May 201824 May 2018

Publication series

NameInternational Conference on Power Electronics
ISSN (Print)2150-6078


ConferenceInternational Power Electronics Conference
Abbreviated titleIPEC


  • AC/AC converter
  • battery charger
  • contactless power supply
  • resonant converter


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