Consumption estimation method for battery-electric buses using general line characteristics and temperature

Szilassy, Péter Ákos and Földes, Dávid (2022) Consumption estimation method for battery-electric buses using general line characteristics and temperature. ENERGY, 261. No. 125080. ISSN 0360-5442

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Though the battery capacity is increasing, in day-to-day operation, battery-electric buses (BEB) are still not able to replace buses with combustion engine one by one. Determining the best option to purchase or the daily operation of a BEB requires consumption estimation. Generally, the consumption is calculated using real data from test runs; however, testing an electric bus has a high cost. Without preliminary data collection, estimating the consumption is a barely studied area. The paper aims to elaborate a consumption estimation method applied in a data-deficient and inexperienced environment using general route characteristics. The consumptions of the drivetrain and auxiliary system are calculated considering uncertainties affecting fluctuations, such as ambient temperature, topography, stop spacing, and passenger load. The method developed was applied as a case study and verified by real-time consumption data. The minimum energy consumption is determined by considering the largest consumers, which correlate with the data measured in real conditions. According to the application, the calculated consumption of buses is feasible and basically provides a fairly good approximation. Estimating the driving dynamics also gives a good approximation; how- ever, the differences are significant if the consumption of cooling and heating and other electric auxiliaries are also considered. The result of the method is a rough estimation of the energy consumption in a line which can be applied for decision making before purchasing a new BEB or introducing a BEB on a new route.

Item Type: Article
Uncontrolled Keywords: Battery electric bus, BEB, Energy consumption, Consumption estimation method, Public transport, Driving dynamics, Auxiliary system, Topography, Stop distance, Ambient temperature, Passenger load
Subjects: T Technology / alkalmazott, műszaki tudományok > TE Highway engineering. Roads and pavements / közlekedésmérnöki, útépítési technika
T Technology / alkalmazott, műszaki tudományok > TL Motor vehicles. Aeronautics. Astronautics / járműtechnika, repülés, űrhajózás
Depositing User: MTMT SWORD
Date Deposited: 05 Sep 2022 06:30
Last Modified: 05 Sep 2022 06:30

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