Title :
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
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;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2015 IEEE
Conference_Location :
Charlotte, NC
DOI :
10.1109/APEC.2015.7104566
