Self-Oscillating Resonant Converter with Contactless Power Transfer and Integrated Current Sensing Transformer

Ligang Xu, Qianhong Chen, Xiaoyong Ren, Siu Chung Wong, Chi Kong Tse

Research output: Journal article publicationJournal articleAcademic researchpeer-review

52 Citations (Scopus)


� 2016 IEEE. In this paper, an integrated transformer is proposed to provide current sensing in the primary side and passive current phase detection for a self-oscillating contactless resonant converter (SOCRC). The proposed transformer integrates power transfer and current sensing. By using the secondary current phase of a series/series-compensated resonant converter in the control of the inverter, better output controllability, dynamic response, and self-adaptability can be achieved simultaneously. The integrated current sensing winding, being a crucial part of SOCRC, is analyzed in detail. In order to make the output voltage insensitive to the clearance and misalignment conditions, the requirement of the new integrated transformer is given. Experimental results of an 80-W SOCRC prototype verify the analytical results.
Original languageEnglish
Article number7536112
Pages (from-to)4839-4851
Number of pages13
JournalIEEE Transactions on Power Electronics
Issue number6
Publication statusPublished - 1 Jun 2017


  • Inductive power transfer (IPT)
  • magnetic integration
  • self-oscillating resonant converter
  • transformer
  • wireless power transfer

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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