Three-Port Converter for Integrating Energy Storage and Wireless Power Transfer Systems in Future Residential Applications

Energies

Hyeon-Seok Lee¹  Jae-Jung Yun² 

[1] Department of Electrical Engineering, POSTECH, Pohang 37673, Korea;Department of Electronics and Electrical Engineering, Daegu University, Gyeongsan 38453, Korea;

关键词: energy storage system;    wireless power transfer system;    dc-dc power conversion;    photovoltaic power system;   

DOI  :  10.3390/en13010272

来源: DOAJ

【 摘 要 】

This paper presents a highly efficient three-port converter to integrate energy storage (ES) and wireless power transfer (WPT) systems. The proposed converter consists of a bidirectional DC-DC converter and an AC-DC converter with a resonant capacitor. By sharing an inductor and four switches in the bidirectional DC-DC converter, the bidirectional DC-DC converter operates as a DC-DC converter for ES systems and simultaneously as a DC-AC converter for WPT systems. Here, four switches are turned on under the zero voltage switching conditions. The AC-DC converter for WPT system achieves high voltage gain by using a resonance between the resonant capacitor and the leakage inductance of a receiving coil. A 100-W prototype was built and tested to verify the effectiveness of the converter; it had a maximum power-conversion efficiency of 95.9% for the battery load and of 93.8% for the wireless charging load.

【 授权许可】

Unknown