Improved Efficiency of Magnetic Field Contactless Power Transfer using Relay Circuit with Resonant Frequency Different from Power Supply Frequency

被引：0

作者：

Masaru I. ^{[1
]}

Masashi O. ^{[2
]}

机构：

[1] Graduate School of Engineering, Chiba Institute of Technology, 2-17-1, Tsudanuma, Narashino

[2] Faculty of Engineering, Chiba Institute of Technology, 2-17-1, Tsudanuma, Narashino

来源：

IEEJ Transactions on Fundamentals and Materials | 2024年 / 144卷 / 07期

关键词：

magnetic field coupling type contactless power supply; resonant circuit; sensor network;

D O I：

10.1541/ieejfms.144.237

中图分类号：

学科分类号：

摘要：

In this study, a relay resonance circuit is used transmitted power to the sensor module using four-parallel cubic coils, and the efficiency decrease with the change in the transmission distance is investigated experimentally. The relay resonant circuit used was examined for resonant frequencies that were near the usable frequency. A square coil was used as the receiving coil. Using Vector Network Analyzer (VNA), the S-parameters were measured with the transmitting and receiving coils as 2 ports, and after converting the S-parameters to Z-parameters, the theoretical maximum efficiency ηmax was calculated. The distance variation characteristics using each relay resonance circuit were investigated. As a result, it was found that the theoretical maximum efficiency was improved when relay coils were used, and that the theoretical maximum efficiency tended to increase when the resonance frequency was slightly larger than the frequency of the power supply circuit. © 2024 The Institute of Electrical Engineers of Japan.

引用

页码：237 / 244

页数：7

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