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Determination of photovoltaic inverter ratio minimizing energy clipping for electric vehicle charging station under different solar radiations
(Institute of Electrical and Electronics Engineers Inc., 2022) Demirci, Alpaslan; Öztürk, Zafer; Tercan, S.M.; Nakir, I.
The increasing integration of electric vehicle charging stations (EVCS) with hybrid power systems (HPS) is becoming more important due to the growing population of electric vehicles. In particular, the decrease in solar module prices from HPS components more than other components (inverter, etc.) has needed the re-evaluation of the inverter loading rates (DC/AC ratio) in optimum system sizing. This study proposes the optimization of DC/AC ratios for EVCS installed in three regions with different climatic characteristics by considering the technical, economic, and environmental effects. The results showed that in optimal scenarios, the DC/AC ratio rose above 1.51 and increased to 1.66, especially for Samsun province, which has low solar potential. On the other hand, the clipping energy (CE) losses were determined to be up to 14% of the total annual energy production when DC/AC ratio is two. © 2022 IEEE.