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Modeling and Experimental Verification of Electric Vehicles Off-Grid Photovoltaic Powered Charging Station

Computer Systems Science & Engineering 2022年第12期43卷 1009-1025页

作者： essam hendawi Sattam Al Otaibi Sherif Zaid Ayman Hoballah Salah K.ElSayed Nagy I.Elkalashy Yasser Ahmed Department of Electrical Engineering College of EngineeringTaif UniversityTaif21944Saudi Arabia Department of Electrical Engineering Faculty of EngineeringUniversity of TabukTabuk47913Saudi Arabia Renewable Energy&Energy Efficiency Center(REEEC) University of TabukTabuk47913Saudi Arabia Department of Electrical Power Faculty of EngineeringCairo UniversityCairo12613Egypt

With the increasing development of EVs, the energy demand from theconventional utility grid increases in proportion. On the other hand, photovoltaic(PV) energy sources can overcome several problems when charging EVs from theutility grid especially in remote areas. This paper presents an effective photovoltaic stand-alone charging station for EV applications. The proposed charging station incorporates PV array, a lithium-ion battery representing the EV battery, and alead-acid battery representing the energy storage system (ESS). A bidirectionalDC-DC converter is employed for charging/discharging the ESS and a unidirectional DC-DC converter is utilized for charging the EV battery. The proposed controllers achieve maximum power extraction from the PV and regulate the DC-linkvoltage. It also controls the voltage and current levels of both the ESS and the EVduring the charging/discharging process. The study has been applied to two caseswith different power levels. Analysis, simulation, and implementation of the proposed system are presented. A 120 W laboratory prototype is carried out to verifythe system performance, experimentally. Design guides for higher power levelsare proposed to help in choosing the proper parameters of the converters. Boththe simulation and experimental results are matched and verify the highperformance of the proposed system.

关键词： Electric vehicle lithium-ion battery lead-acid battery photovoltaic microcontroller charging station

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