Impact on Power Quality When Using Fast Charge Type of Battery Charging Station for Electric Vehicles
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Abstract
This article presents the impact on power system when operating fast charge type of battery charging stations for electric vehicles. In this work, the data analyzed were obtained from measurements that directly affect the three-phase power system at the input side of the electric vehicle battery charging station. The measured values were root mean square voltage (Vrms), root mean square current (Irms), the total harmonic distortion of voltage (% THDV), and the total harmonic distortion of current (% THDI). To store data will be done since it has not been charged, while starting to charge until the electric vehicle battery is fully charged. The vehicles used for testing belong to the Electricity Generating Authority of Thailand (EGAT), which is an electric powered minibus that uses a 120 kW-h lithium-ion battery. The charging station used for testing also belongs to the Electricity Generating Authority of Thailand, the input voltage is AC 400 V, the output voltage is DC 250 to 750 V, and the plug used for charging is a CCS-Type type 2. Once the data is complete, those data are then used to create a graph to analyze the impact on power system. The results of the data analysis revealed that while operating fast charge type of battery charging station for electric vehicles, there are three main effects on power quality of the power system: voltage effect, harmonic effect and the impact on unbalance of power system.
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ลิขสิทธ์ ของมหาวิทยาลัยเทคโนโลยีราชมงคลพระนครReferences
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