Conventional electric vehicle (EV) battery chargers suffer from severe power quality (PQ) issues at AC mains, due to non-linear nature of a diode-bridge rectifier, used for AC–DC conversion. Here, a power factor correction (PFC) circuit based on an isolated discontinuous conduction mode (DCM) zeta converter topology is designed and implemented for charging a 100 Ah, 48 V lead–acid EV battery. Test results, for charging an EV battery with constant current-constant voltage mode (CC-CV) control, are shown with a 1 kW zeta converter prototype. Test results show that the proposed zeta converter conforms to the improved PQ standard such as the IEC 61000-3-2, as well as, a unity power factor (UPF) input current with low harmonic distortion factor is achieved. Moreover, a smooth battery current is obtained during charging, even when there are fluctuations in the supply voltage hence enhanced lifetime of the battery is achieved.
UPF-isolated zeta converter-based battery charger for electric vehicle
IET Electrical Systems in Transportation ; 9 , 3 ; 103-112
2019-05-07
10 pages
Article (Journal)
Electronic Resource
English
power factor correction , zeta converter prototype , conventional electric vehicle battery chargers , AC mains , power factor , power factor correction circuit , UPF-isolated zeta converter-based battery charger , improved PQ standard , diode-bridge rectifier , lead–acid EV battery , unity power factor input current , smooth battery current , power supply quality , constant current-constant voltage mode control , IEC 61000-3-2 , secondary cells , IEC standards , AC-DC conversion , battery powered vehicles , severe power quality issues , voltage 48.0 V , AC-DC power convertors , low harmonic distortion factor , isolated discontinuous conduction mode zeta converter topology , harmonic distortion , battery chargers , PFC circuit , power 1.0 kW
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