High-Frequency, Mid-range Wireless Power Transfer System using Critical Coupling Coefficient Adjustment

Kim, Minki; Choi, Joo-Hong

doi:10.1109/apec42165.2021.9487028

Cited by 4 publications

(1 citation statement)

References 16 publications

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“…The second is to still adopt a point-to-point dual coil structure, which improves transmission performance by increasing coil size and operating frequency. For example, references [14] and [15] use ultrahigh-frequency (UHF) to improve output power and system efficiency. However, at UHF, a series of problems, such as increased switching device loss, circuit stray parameter changes, impedance matching, and skin effect, is more prominent [16][17][18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Design and analysis of wireless power supply system for high‐voltage transmission lines across 500‐kV insulator distance

Tan

Zhi-jun

Shen

et al. 2023

IET Power Electronics

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The energy harvesting of ultra‐high voltage transmission lines and wireless power transmission technology are effective means to solve the stable energy supply of outdoor tower equipment. However, there are inevitably technical problems such as long transmission distance, weak coupling, and parameter sensitivity. In this paper, an effective design approach for a power demand‐oriented long‐distance wireless power transmission system is proposed. With the goal of transmitting power, a system equivalent parameter model is established to address the sensitivity of design parameters for the point‐to‐point long‐distance wireless power transmission system, and the main influencing factors that lead to system power transmission failure are analyzed. To effectively address the impact of high‐sensitivity parameters, a fast‐tuning method with redundant capacitance matrix compensation is proposed, which improves the deviation problem in system parameter design, improves the efficiency of offset parameter matching, and analyzes the impact of wireless energy transmission systems on high‐voltage insulator strings. Finally, an experimental platform was constructed to achieve power transmission at a distance of not less than 5 m at a resonant frequency of 50 kHz. The transmission efficiency met the design expectations and verified the effectiveness of the analysis.

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