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Design of a Reversely Information Transfer System with Frequency Modulation at the Secondary Side
Received:April 09, 2019  Revised:May 12, 2019
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Keywords:Wireless power transfer  reversely information transfer  information modulation  information demodulation  frequency regulation
Fund Project:Research on Modeling and Optimization Method of Simultaneous Wireless Information and Power Transmission(U1604136)
              
AuthorInstitutionEmail
Wu Jie School of Electrical and Information Engineering, Zhengzhou University of Light Industry wujie@zzuli.edu.cn
He Shuai biao 1034438920@qq.com
Dou Zhi feng School of Electrical and Information Engineering, Zhengzhou University of Light Industry zhifeng.dou @zzuli.edu.cn
Jin Nan School of Electrical and Information Engineering, Zhengzhou University of Light Industry jinnan@zzuli.edu.cn
Ma Dian guang dgma@sjtu.edu.cn
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Abstract:
      Abstract : Considering the problem of reverse information transmission in the inductive wireless power transfer systems, a structure consisting of an uncontrolled rectifier bridge and a full control switch at the secondary side is proposed in this paper. The reverse transmission of information is realized by adjusting the operating frequency of the secondary control switch. This paper introduces the structure of the circuit and its working principle, proposes the control method of information reverse transmission, gives the design method of information modulation and demodulation circuit. An experimental platform with 100W power transmission and 7.5 kbit/s information transmission rate validates the proposed structure. The circuit has a simple structure, information transfer can be achieved by adding only one extra switching device to equip a power transfer system with the function of information transmission.
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