A Quasi-Z-Source-Based Inductive Power Transfer System for Constant Current/Constant Voltage Charging Applications

Electronics

Frede Blaabjerg¹  Rosario Miceli²  Vincenzo Castiglia²  Nicola Campagna²  Fabio Viola² 

[1] Department of Energy Technology, University of Aalborg, 9100 Aalborg, Denmark;Department of Engineering, University of Palermo, 90128 Palermo, Italy;

关键词: battery charging;    constant current/constant voltage (CC/CV) charging;    Inductive Power Transfer (IPT);    quasi-Z-Source (qZS);   

DOI  :  10.3390/electronics10232900

来源: DOAJ

【 摘 要 】

This article proposes a quasi-Z-source (qZS)-based Inductive Power Transfer (IPT) system for Electric Vehicles (EVs) charging applications. The IPT systems use the magnetic field to transfer power between two coils wirelessly, achieving improved reliability, safety and less environmental impact. Compared to the conventional IPT system, the proposed qZS-IPT system simultaneously achieves DC/DC regulation and DC/AC conversion through a single-stage conversion, thus lowering the cost and complexity of the system. Moreover, the reliability of the system is improved thanks to the qZS network shoot-though immunity and the reduced number of switches. To ensure the battery efficient charging and long service life, the constant current/constant voltage (CC/CV) method is considered. With the proposed innovative modulation scheme, the qZS can easily change between buck and boost modes, respectively, lowering or increasing the secondary side current. A theoretical analysis is presented for system design. Simulation results based on a 25 kW (200 V/135 A) low duty EV charger are presented to verify the effectiveness of the proposed scheme. Experimental tests are performed on a 150 W scale-down prototype to validate the analysis and demonstrate the effectiveness of the proposed qZS-IPT system for CC/CV chargers.

【 授权许可】

Unknown