Extended-range two-coil adaptively reconfigurable wireless power transfer system

Author

Zhigang Dang ; Abu Qahouq, Jaber A.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Alabama, Tuscaloosa, AL, USA

fYear

2015

fDate

15-19 March 2015

Firstpage

1630

Lastpage

1636

Abstract

This paper presents a two-coil reconfigurable wireless power transfer (WPT) system topology in order to optimize transmission efficiency under different transmission distance (DIS) and lateral misalignment (MIS) conditions. The reconfigurable WPT system includes one transmitter (Tx) side and one receiver (Rx) side but it could switch between different circuit configurations (which are made up of different values of series and shunt capacitors) at Tx side and/or Rx side. Design guidelines of the two-coil reconfigurable WPT system are devised based on an equivalent circuit model. A proof of concept prototype with three different adaptive configurations at Tx side and one configuration at Rx side is built and experimentally compared with conventional two-coil WPT system. Results show that when the system is perfectly aligned, the reconfigurable system improves the transmission efficiency by up to 20%. When system is laterally misaligned, the transmission efficiency is improved by up to 19%.

Keywords

coils; equivalent circuits; DIS; MIS; different transmission distance; equivalent circuit model; lateral misalignment; reconfigurable WPT system; reconfigurable wireless power transfer system; two-coil reconfigurable wireless power transfer system topology; Capacitance; Capacitors; Coils; Integrated circuit modeling; Resonant frequency; Topology; Wireless communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2015 IEEE

Conference_Location

Charlotte, NC

Type

conf

DOI

10.1109/APEC.2015.7104566

Filename

7104566