Manufacturing Technology 2019, 19(6):1020-1026 | DOI: 10.21062/ujep/412.2019/a/1213-2489/MT/19/6/1020

The Utilisation of Physical Diagrams for the Modelling of Electric Vehicle Charging

Vladislav Síťař, Tomáš Vysloužil
Jan Evangelista Purkyne University in Usti nad Labem, Faculty of Mechanical Engineering, Institute of Machines and Power Engineering, Pasteurova 3334/7, 400 96 Usti nad Labem, Czech Republic

The paper describes the utilisation of several physical diagrams for the modelling of chosen electric car charging in alternative simulation software for an electric power system. The description and evaluation of possible ways for modelling of electric vehicle charging with the results that are sutable for basic energetic analysis are performed, and for all cases given models are used in chosen simulation circuits. Modelling of electric vehicle charging becomes important with the increasing trend of used electric cars and installed charging stations. Electric vehicle charging represents the rising amount of loads with nonstandard behaviour which has been connected to the distribution power grid. The behaviour of electric cars during charging is not the same as a standard passive load, which can be defined by consumed active power for a specified period of time. The charging process has a specific behaviour, which is derived by the type of a charging station and communication with the battery in the car. While charging the distribution grid is influenced. The undesirable occurred phenomena are unbalanced powers and generation of harmonics, which can cause voltage and current asymmetry in the grid and subsequently worsen electrical voltage quality. Furthermore, the load capacity of distribution lines is reduced and therefore the steep increase of loading limits their safety and economic usage.

Keywords: Electric vehicle charging, Load modelling, Constant impedance load, Constant current load, Constant power load
Grants and funding:

Specific Research (Ministry) Grant – UJEP-IGA-TC-2019-48-03-2: Modelling of specific elements, sources and loads in distribution power systems while respecting the quality and transmission of electrical energy.

Published: December 1, 2019  Show citation

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Síťař V, Vysloužil T. The Utilisation of Physical Diagrams for the Modelling of Electric Vehicle Charging. Manufacturing Technology. 2019;19(6):1020-1026. doi: 10.21062/ujep/412.2019/a/1213-2489/MT/19/6/1020.
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