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Wireless Power and Data Transfer via a Common Inductive Link Using Frequency Division Multiplexing
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DOI：10.1109/TIE.2015.2453934.png)
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摘要
En 中文
For wireless power transfer (WPT) systems, communication between the primary side and the pickup side is a challenge because of the large air gap and magnetic interferences. A novel method, which integrates bidirectional data communication into a high-power WPT system, is proposed in this paper. The power and data transfer share the same inductive link between coreless coils. Power/data frequency division multiplexing technique is applied, and the power and data are transmitted by employing different frequency carriers and controlled independently. The circuit model of the multiband system is provided to analyze the transmission gain of the communication channel, as well as the power delivery performance. The crosstalk interference between two carriers is discussed. In addition, the signal-to-noise ratios of the channels are also estimated, which gives a guideline for the design of mod/demod circuits. Finally, a 500-W WPT prototype has been built to demonstrate the effectiveness of the proposed WPT system.
Keyword:
Frequency division multiplexing
multiband system
near-field magnetic communication
wireless power and data transfer
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期刊
IF:
7.2
论文数:
1.8W
被引数:
9.8W
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