Abstract
AbstractThe wireless power transfer (WPT) system based on the parity–time (PT) symmetry can realize stable power transmission with constant efficiency and output power in the PT‐symmetric region. In some applications with long transmission distance requirements, such as medical treatment, it is meaningful to expand the PT‐symmetric region by reducing the critical coupling coefficient. Therefore, a novel WPT system based on PT symmetry with a boost converter in secondary side is proposed in this article to expand the transmission range. The circuit theory is used to analyze the presented system. Then two models with different drive signals of the boost converter are established and simulated respectively to show the effect of the proposed system compared with the original PT‐symmetry‐based WPT system. Finally, the experimental results verify that the proposed system can play a role in extending the stable transmission distance or in suppressing the output power growth of the PT‐symmetric‐based WPT system.
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