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- W4297094380 abstract "In this article, combining the phase synchronization method (PSM) and high harmonic operation (HHO), a novel parity-time (PT)-symmetric wireless power transfer (WPT) system with reduced switching frequency and improved step-down conversion ratio is proposed, where the power transferred to receiver side is carried by the <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$n$ </tex-math></inline-formula> th harmonic. We demonstrate that constant current (CC) and constant voltage (CV) independent of coupling coefficient and load resistance can also be obtained without wireless communication and additional dc–dc converters. Here, a new implementation of a negative resistor based on the <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$n$ </tex-math></inline-formula> th harmonic operation is proposed, which is a necessary condition of a PT-based system. In contrast to the standard PT-based system with the same resonant frequency, the switching frequency is reduced to 1/ <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$n$ </tex-math></inline-formula> due to the use of the <inline-formula xmlns:mml=http://www.w3.org/1998/Math/MathML xmlns:xlink=http://www.w3.org/1999/xlink> <tex-math notation=LaTeX>$n$ </tex-math></inline-formula> th harmonic, thereby realizing low switching losses and high system efficiency. Besides, an inherently improved step-down conversion ratio can be obtained. A prototype with a 6-A charging current and a 36-V charging voltage is built to verify the feasibility of the proposed method." @default.
- W4297094380 created "2022-09-27" @default.
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- W4297094380 date "2023-06-01" @default.
- W4297094380 modified "2023-09-30" @default.
- W4297094380 title "Robust Parity-Time-Symmetric WPT System With Reduced Switching-Frequency and Improved Step-Down Conversion Ratio" @default.
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- W4297094380 doi "https://doi.org/10.1109/tte.2022.3209362" @default.
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