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author:

Qu, Y. (Qu, Y..) [1] | Zhang, B. (Zhang, B..) [2] | Gu, W. (Gu, W..) [3] | Li, J. (Li, J..) [4] | Shu, X. (Shu, X..) [5]

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Scopus

Abstract:

The application of wireless power transfer (WPT) has become more and more extensive, and the parity-time (PT) symmetric principle has been proved to significantly improve the degree of freedom of the WPT system without increasing the control complexity. However, the PT-symmetric region of the original WPT system with series-series (SS) compensation is limited. To overcome this drawback, a novel PT-symmetric WPT system with series-parallel-series (S-PS) compensation is proposed in this paper. The PS compensation network is converted to the S compensation network by equivalent circuit method. Then a mathematical model of the proposed system is established by circuit theory. It is found that the critical coupling coefficient of the proposed system are much smaller than the original PT-symmetric system. Furthermore, the proposed system has a compromise between transmission distance and transfer efficiency by setting the capacitance distribution ratio. A 26W prototype is built to verify the feasibility of the proposed method. Experimental results demonstrate that the proposed method doubles the transmission distance and improves the output power. IEEE

Keyword:

Capacitance Couplings distance extension Equivalent circuits parity-time (PT) symmetry Power generation Receivers S-PS compensation Transmitters Voltage wireless power transfer (WPT)

Community:

  • [ 1 ] [Qu, Y.]School of Electric Power, South China University of Technology, Guangzhou, China
  • [ 2 ] [Zhang, B.]School of Electric Power, South China University of Technology, Guangzhou, China
  • [ 3 ] [Gu, W.]School of Electric Power, South China University of Technology, Guangzhou, China
  • [ 4 ] [Li, J.]School of Electric Power, South China University of Technology, Guangzhou, China
  • [ 5 ] [Shu, X.]College of Electrical Engineering and Automation, Fuzhou University, Fuzhou, China

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IEEE Transactions on Circuits and Systems II: Express Briefs

ISSN: 1549-7747

Year: 2023

Issue: 8

Volume: 70

Page: 1-1

4 . 0

JCR@2023

4 . 0 0 0

JCR@2023

ESI HC Threshold:35

JCR Journal Grade:2

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count:

SCOPUS Cited Count: 4

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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