Energetic balance of autonomous hybrid renewable energy based EV charging station in winter conditions
Faculty of Engineering, Latvia University of Agriculture, J. Cakstes blvd. 5.,LV-3001 Jelgava, Latvia; *Correspondence: firstname.lastname@example.org
The paper presents an experimental research on energetic balance of an autonomoushybrid renewable energy based electric vehicle (EV) charging station. The experimental chargestation is located in the central part of Latvia in Jelgava city. The station is built using standardsmall-scale hybrid power system equipment: 24 V 300 Ah lead-acid battery, 2 kW photovoltaicarray, 300 W wind generator, hybrid charge controller and 1.6 kW inverter. The station iscapable to perform mode 1 EV charging (220 V, 50 Hz, up to 1.6 kW). The aim of the researchis to evaluate the operational possibilities, technical self-consumption and overall energybalance of the renewable resources based station during a winter period. Analysis on availablepower for EV charging, self-consumption and affecting environmental factors during a 6-dayperiod is performed. The time period was chosen to include days with temperatures below andabove zero and various levels of solar irradiation. Conclusions about possibilities andusefulness of winter-period exploitation are given.