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WU Jie,HE Shuaibiao,DOU Zhifeng,JIN Nan,MA Dianguang.Reverse Information Transfer Design in WPT System with Frequency Modulation on Secondary Side[J].JOURNAL OF POWER SUPPLY,2021,19(2):160-166
Reverse Information Transfer Design in WPT System with Frequency Modulation on Secondary Side
Received:April 09, 2019  Revised:January 28, 2021
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DOI:10.13234/j.issn.2095-2805.2021.2.160
Keywords:wireless power transfer  reverse information transfer  information modulation  information demodulation  frequency modulation on secondary side
Fund Project:Research on Modeling and Optimization Method of Simultaneous Wireless Information and Power Transmission(U1604136)
              
AuthorInstitutionEmail
WU Jie College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou , China
HE Shuaibiao College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou , China
DOU Zhifeng College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou , China
JIN Nan College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou , China jinnan@zzuli.edu.cn
MA Dianguang MOE Key Laboratory of Transmission and Distribution Control, Shanghai Jiao Tong University, Shanghai , China
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Abstract:
      Considering the problem of reverse information transfer in an inductive wireless power transfer (WPT) system, a structure consisting of an uncontrolled rectifier bridge and a full-control switch on the secondary side is proposed in this paper. The reverse transfer of information is realized by adjusting the operating frequency of the secondary-side full-control switch. The circuit structure and its working principle are introduced, the control method of reverse information transfer is put forward, and the design method for an information modulation and demodulation circuit is also given. An experimental platform with 100 W power transfer and 7.5 kbit/s information transfer rate was constructed, and results validated the feasibility of the proposed structure. This circuit has a simple structure, and the pure power transfer system's information transfer function can be realized by adding only one extra switching device.
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