A study of loosely coupled coils for wireless power transfer

  • Authors:

  • Chih-Jung Chen;Tah-Hsiung Chu;Chih-Lung Lin;Zeui-Chown Jou

  • Affiliations:

  • Department of Communications Navigation and Control Engineering, National Taiwan Ocean University, Keelung, Taiwan;Department of Electrical Engineering, National Taiwan University, Taipei, Taiwan;Department of Electrical Engineermg, National Cheng Kung University, Tainan, Taiwan;Department of Advanced Technology, Darfon Electronics Corporation, Taoyuan, Taiwan

  • Venue:
  • IEEE Transactions on Circuits and Systems II: Express Briefs
  • Year:
  • 2010

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Abstract

Nonradiative wireless power transfer using magnetically coupled coils is studied in order to transfer a predetermined amount of power at the maximum efficiency. Accordingly, a conceptual wireless power transfer system and a tuning method are presented. Such a study is essential for effectively exploiting the inherent ability of a given pair of coupled coils. With the equations for inductance and resistance calculations, the system performance is evaluated and verified with well-known experimental results and circuit simulations.