High Efficiency and Power Tracking Method for Wireless Charging System Based on Phase-Shift Control

Energies

Pavel Drabek¹  Vladimir Kindl¹  Martin Zavrel¹  Tomas Kavalir² 

[1] Faculty of Electrical Engineering, University of West Bohemia, Plzen 30614, Czech;Faculty of Mechanical Engineering, University of West Bohemia, Plzen 30614, Czech;

关键词: wireless power transfer;    phase-shift control;    resonant coupling;    shielding;    efficiency;   

DOI  :  10.3390/en11082065

来源: DOAJ

【 摘 要 】

The paper presents optimal operating point tracking algorithm for wireless charging system using identical coupling coils providing us to meet simultaneously high efficiency and high transmitted power under varied load and detuning conditions. The proposed method is suitable either for purely resistive load or battery load and it is based on phase-shift control between the primary and the secondary voltage. The paper also gives an intuitive mathematical description of the key control idea and demonstrates its operational abilities. The proposed algorithm is finally implemented into digital signal processor (DSP) and tested on 4 kW laboratory prototype of shielded wireless power transfer system.

【 授权许可】

Unknown