The paper deals with wireless battery chargers (WBCs) for plug-in electric vehicles (PEVs) and analyzes two arrangements for the receiver of a series-series resonant WBC. The first arrangement charges the PEV battery in a straightforward manner through a rectifier. The second arrangement charges the PEV battery through a chopper whose input voltage is kept constant. Figures of merit of WBCs such as efficiency and sizing factor of both the supplying voltage source and the transmitter/ receiver coils are determined. Afterwards, they are discussed and compared with reference to the case study of WBC for an electric city car. A proposal to optimize the efficiency of the second arrangement by a suitable selection of the chopper input voltage is presented. Measurements on the efficiency of the two arrangements are included to support the theoretical results.
Analysis and comparison of two wireless battery charger arrangements for electric vehicles
BUJA, GIUSEPPE;BERTOLUZZO, MANUELE;JHA, RUPESH KUMAR;
2015
Abstract
The paper deals with wireless battery chargers (WBCs) for plug-in electric vehicles (PEVs) and analyzes two arrangements for the receiver of a series-series resonant WBC. The first arrangement charges the PEV battery in a straightforward manner through a rectifier. The second arrangement charges the PEV battery through a chopper whose input voltage is kept constant. Figures of merit of WBCs such as efficiency and sizing factor of both the supplying voltage source and the transmitter/ receiver coils are determined. Afterwards, they are discussed and compared with reference to the case study of WBC for an electric city car. A proposal to optimize the efficiency of the second arrangement by a suitable selection of the chopper input voltage is presented. Measurements on the efficiency of the two arrangements are included to support the theoretical results.
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