Journal
IEEE TRANSACTIONS ON POWER ELECTRONICS
Volume 33, Issue 2, Pages 1368-1377Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPEL.2017.2678503
Keywords
Harmonic communication; wireless power and information transmission (WPIT)
Categories
Funding
- China Postdoctoral Science Foundation [2016M601857]
- Jiangsu Postdoctoral Science Foundation [1601153C]
- Six Talent Peaks Project in Jiangsu Province [2015-ZNDW-007]
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Wireless power and information transmission (WPIT) technology can realize simultaneous wireless transmission of power and information. In this paper, the fundamental component of the triangular current waveform is employed to transfer power, and its third-order harmonic component is selected to transfer information. The Fourier decomposition method is conducted to analyze the triangular current waveform; two equivalent circuit models of the proposed WPIT system are established based on the relationship between the fundamental component and the third-order harmonic component. Harmonic components have an enlargement effect on the deviation of the fundamental frequency; this feature is used to realize the weakly coupled control between the information transmission and the efficiency of wireless power transfer. Based on the proposed harmonic communication method, the transient process and the maximum communication speed of the circuit are discussed. To achieve the high signal-to-noise ratio (SNR) communication, different space positions of the signal receiving winding are compared. Experimental results show that the proposed method provides a new solution for designing the WPIT system.
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