Journal of South China University of Technology (Natural Science Edition) ›› 2017, Vol. 45 ›› Issue (4): 37-43.doi: 10.3969/j.issn.1000-565X.2017.04.006

• Power & Electrical Engineering • Previous Articles     Next Articles

Compensation Capacitor Optimization for Low-Frequency Magnetically-Resonant Coupling Wireless Power Transfer System

YANG Jin-ming XIE Xing-lang XIANG Ru-yi CHEN Yuan-rui   

  1. School of Electric Power,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2016-06-01 Revised:2016-08-26 Online:2017-04-25 Published:2017-03-01
  • Contact: 杨金明( 1962-) ，男，博士，教授，主要从事电力电子及其控制技术研究． E-mail:jmyang@scut.edu.cn
  • About author:杨金明( 1962-) ，男，博士，教授，主要从事电力电子及其控制技术研究．
  • Supported by:
    Supported by the National Natural Science Foundation of China( 51177050) and the Production-Study-Research Cooperation Project of Ministry of Education &Guangdong Province( 2013B090500089)

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Abstract:

In this paper,by analyzing the effects of coupling coefficient,resonant frequency and coil resistance on the transfer efficiency and output power of magnetically-resonant coupling system in low-frequency state,the relationship between the compensation capacitor of drive coil /load coil in non-resonant state and the output power as well as the transfer efficiency is established.In addition,a simplified calculation method of the optimized compensation capacitor is proposed.Experimental results show that the proposed method is adaptable and effective in power and efficiency optimization.

Key words: wireless power transfer, magnetically-resonant coupling, compensation capacitor

CLC Number: