Iskanje po katalogu digitalne knjižnice

Opis: The expected growth of electric vehicle (EV) usage will not only increase the energy demand but also bring the requirement to provide the necessary electrical infrastructure to handle the load. While charging infrastructure is becoming increasingly present in urban areas, special attention is required for transit traffic, not just for passengers but also for freight transport. Differences in the nature of battery charging compared to that of classical refueling require careful planning in order to provide a resilient electrical infrastructure that will supply enough energy at critical locations during peak hours. This paper presents a hybrid simulation model for analyzing fast-charging demand based on traffic flow, projected EV adoption, battery characteristics, and environmental conditions. The model integrates a probabilistic model for evaluating the charging requirements based on traffic flows with a discrete-event simulation (DES) framework to analyze charger utilization, waiting queues, and energy demand. The presented case of traffic flow on Slovenian motorways explored the expected power demands at various seasonal traffic intensities. The findings provide valuable insight for planning the charging infrastructure, the electrical grid, and also the layout by anticipating the number of vehicles seeking charging services. The modular design of the model allowed replacing key parameters with different traffic projections, supporting a robust scenario analysis and adaptive infrastructure planning. Replacing the parameters with real-time data opens the path for integration into a digital twin framework of individual EV charging hubs, providing the basis for development of an EV charging hub network digital twin.
Ključne besede: electric vehicles, EV charging, traffic flow, EV charging hub
Objavljeno v DKUM: 11.04.2025; Ogledov: 0; Prenosov: 2
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Opis: Improvements in battery technology make electric vehicles more and more suitable for the use as electricity storages. Many benefits could be achieved by using electric vehicles for storing electricity in their batteries. This paper talks about the idea of electric vehicles as electricity storages in electric power systems. The idea has a great number of supporters, but also a significant part of the professional community believes that is unfeasible. This paper is not classified in either side and strives to give a realistic picture of this idea. For this purpose, findings from papers published in scientific journals are mainly used. There is also some information from websites, mainly for some technical issues. Partly, the opinions of the authors are present. Specificities of EVs and EPSs that enabled the birth of this idea are explained along with proposed concepts through which the idea can be implemented. Keeping with the vehicle to grid concept, issues about the implementation of the idea are considered. Achievements in the practical realization of the idea are also presented.
Ključne besede: electricity, electric vehicles, storages, V2G
Objavljeno v DKUM: 22.08.2024; Ogledov: 66; Prenosov: 4
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Opis: 17th International Conference on Agricultural Logistics organized by: Landscape Governance College GRM Novo mesto, Grm Novo mesto – center of Biotechnology and Tourism, the Faculty of Logistics of the University of Maribor, the Municipality of Sevnica and Cooperatice Union of Slovenia. The central theme of this year’s conference will be “Climate changes of logistics in agriculture“. The conference has become traditional and paves the way for a different view of logistics in connection with agriculture.
Ključne besede: logistics, agriculture, local food, electric vehicles, international conferences, proceedings
Objavljeno v DKUM: 21.12.2023; Ogledov: 438; Prenosov: 34
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Opis: This paper deals with pedelecs and e-cars in urban transport systems in selected countries of the Danube region. Within the EU project eGUTS a feasibility study focused on pedelecs and e-cars was made. Country specific information on e-mobility (pedelecs and ecars) was gathered and is briefly presented in chapter 2. In addition, a common SWOT analysis for all selected countries of the Danube region was made and is presented in the conclusion of the paper.
Ključne besede: pedelecs, e-cars, electric vehicles, SWOT analysis, Danube region
Objavljeno v DKUM: 04.12.2023; Ogledov: 416; Prenosov: 38
Celotno besedilo (18,06 MB)

Opis: The widespread adoption of electric vehicles poses certain challenges to the distribution grid, which refers to the network of power lines, transformers, and other infrastructure that delivers electricity from power plants to consumers. This higher demand can strain the distribution grid, particularly in areas with a high concentration of electric vehicles. Grid operators need to ensure that the grid infrastructure can handle this additional load and prevent overloading and consequences in terms of additional losses. As part of the task, a methodology was developed for the assessment of the electricity consumption of battery electric vehicles in Slovenia. The approach used for the calculation includes the number of electric cars, average consumption, distance travelled and efficiency of the system. Additionally, the results of the modelling approach for an integrated distribution grid model in terms of steady-state simulations are presented. The regular situation of the power losses within the distribution grid is managed together with an optimal result. In this sense, an application of the particle swarm optimisation-based strategy is suggested to minimise reliance on grid systems.
Ključne besede: electric vehicles, distribution grid, optimisation, power losses
Objavljeno v DKUM: 10.10.2023; Ogledov: 403; Prenosov: 33
Celotno besedilo (2,22 MB)
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