Design of adaptive optimal load circuit for maximum wireless power transfer efficiency

Author

Youn-Kwon Jung ; Bomson Lee

Author_Institution

Dept. of Electron. & Radio Eng., Kyung Hee Univ., Yongin, South Korea

fYear

2013

fDate

5-8 Nov. 2013

Firstpage

1221

Lastpage

1223

Abstract

An adaptive optimal load circuit (ALC) for the maximum wireless power transfer (WPT) efficiency is presented for a magnetically coupled resonant WPT system at 13.56 MHz. The ALC is based on the lumped-element matching circuit. The series part is composed of a series capacitor block and an inductor. The shunt part is composed of a varactor and a capacitor block with switches. The tunable range of the optimal load impedance is from 0.2 to 50 Ω. The provided examples demonstrate the usefulness and effectiveness of the ALC to achieve the maximum efficiency.

Keywords

circuit resonance; coupled circuits; inductors; lumped parameter networks; magnetic circuits; microwave circuits; microwave power transmission; microwave switches; network synthesis; varactors; ALC; adaptive optimal load circuit design; frequency 13.56 MHz; inductor; lumped element matching circuit; magnetically coupled resonant WPT system; resistance 0.2 ohm to 50 ohm; series capacitor block; switches; varactor; wireless power transfer efficiency; Inductors; Magnetic flux; Magnetic resonance; Optimized production technology; Varactors; Wireless communication; Adaptive load circuit; Optimal load; Wireless power transfer;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference Proceedings (APMC), 2013 Asia-Pacific

Conference_Location

Seoul

Type

conf

DOI

10.1109/APMC.2013.6695078

Filename

6695078