THE JOURNAL OF KMUTNB

Volume 32, No. 04, Month OCTOBER, Year 2022, Pages 843 - 853

The impact study of electric vehicle quick charger to electrical system for business in private sector

Panya Khemmook, Surakit Thongsuk, Prayuth Inban

Abstract Download PDF

This paper presents the study of electric vehicle quick charger impact on electrical system for private business sector. The purposes of this study are: 1) to prepare guidelines for private entrepreneurs interested in installing a multi-standard quick charger to service EV and 2) to inform private entrepreneurs about the electrical effect from the operation of the electric vehicle battery charger. This presents by measuring the electrical quantity of the electrical system samples equipped with a practical multi-standard fast electric vehicle battery charger as well as other electrical parameters of the electric vehicle battery charger. This study analyzes the effects on the power system by measuring the parameters of the installed EV multi-standard quick charger consisting of 3-phase input voltage, 3-phase input current, input power, state of charge (%SOC), total voltage harmonic distortion (THDv), total current harmonic distortion (THDi), frequency (f), and power factor (p.f.). From the study, the various electrical parameters follow the standards of the Electricity Authority with the following parameters: the system phase-to-phase average voltage of 395.25 V, phase average voltage of 228.20 V, average voltage waveform distortion of 0.16%, average current waveform distortion of 0.51%, the average system frequency of 50.03 Hz, and the average power factor of the charger of 0.99. The results of the study show that there is no effect on the grid system during the operation of a number of standard fast electric vehicle battery chargers. In addition, there is no effect on the power distribution system or nearby users or connected appliances receiving power from the same transformer. The results of the study can be used to guide private entrepreneurs to be assured with installing a multi-standard quick charger to service EV resulting in encouraging the use of EVs in the country.

Keywords

Electric Vehicle (EV); EV Multi-standard Quick Charger; EV Quick Charging Standard

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