Design and Implementation of a Planar Transformer-based Contactless Battery Recharger

• Main Authors: Yuan-Chen Hsu, 許元禎
• Other Authors: Sau-Mou Wu
• Format: Others
• Language: en_US
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/73311636469027335906

碩士 === 元智大學 === 電機工程學系 === 99 === The study in this thesis is related to a wireless charger system based on planar PCB windings. This wireless charger system consists of energy supply module, energy receiver and charge circuit. The planar PCB windings are used as transformers for energy transfer from the supply module to the receiver; in particular, the multilayer hexagonal PCB windings are employed to generate uniform magnetic flux over the surface of the planar PCB windings to enhance the energy transfer efficiency. The kernel technique includes the connection and arrangement of the PCB windings. In this study, the major innovative concept is to make wireless charger module scalable regardless of the load size, positions and orientation. Also provided are the equivalent circuit and model for optimal power delivery. The system is implemented and measured with DC 12V supply voltage, 100 KHz operating frequency and charging power 1.15W with delivery efficiency 8%. A test of the system is performed on a mobile phone.