π-Impedance Matching Circuit for Wireless Power Transfer Systems under Dynamic Load and Transfer Distance

被引：2

作者：

Lee, Wei-Ting ^{[1
]}

Kung, Ming-Lung ^{[2
]}

Lin, Ken-Huang ^{[1
]}

机构：

[1] Natl Sun Yat Sen Univ, Dept Elect Engn, Kaohsiung, Taiwan

[2] ROC Air Force Acad, Dept Av Engn, Kaohsiung, Taiwan

来源：

2020 IEEE INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION AND NORTH AMERICAN RADIO SCIENCE MEETING | 2020年

关键词：

impedance matching; wireless power transfer (WPT);

D O I：

10.1109/IEEECONF35879.2020.9330190

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In recent years, wireless charging has become a trend because it is convenient and safe. However, its efficiency can deteriorate when the distance between coils or the load varies. In this paper, an automatic pi-impedance matching method is proposed to obtain higher efficiency under dynamic-coupling or varied-load condition. The simulation results show that the efficiency can remain higher than 85% in varying transfer distances when coupling coefficient is over 0.3. For varied-load, the efficiency is higher than 80% when the load is over 20 ohm and reach around 88% as the load increases at the 6.78-MHz operating frequency.

引用

页码：1579 / 1580

页数：2

共 4 条

[1] Automated Impedance Matching System for Robust Wireless Power Transfer via Magnetic Resonance Coupling
Beh, Teck Chuan
Kato, Masaki
Imura, Takehiro
Oh, Sehoon
Hori, Yoichi
[J]. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2013, 60 (09) : 3689 - 3698
[2] Enhanced Analysis and Design Method of Dual-Band Coil Module for Near-Field Wireless Power Transfer Systems
Kung, Ming-Lung
Lin, Ken-Huang
[J]. IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2015, 63 (03) : 821 - 832
[3] Kuo RC, 2015, 2015 IEEE WIRELESS POWER TRANSFER CONFERENCE (WPTC)
[4] Efficient Wireless Power Transfer System Integrating With Metasurface for Biological Applications
Li, Long
Liu, Haixia
Zhang, Huiying
Xue, Weiming
[J]. IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS, 2018, 65 (04) : 3230 - 3239

← 1 →