Title
Optimization and Analysis of Electric Vehicle Operation with Fast-Charging Technologies
Author
Al-Saadi, M.
Mathes, M.
Käsgen, J.
Koffrie, R.
Mayrock, M.
van Mierlo, J.
Berecibar, M.
Publication year
2022
Abstract
This work presents three demos, which include Electric Buses (EBs) from four various brands with lengths of 12 m and 18 m and an Electric Truck (E-truck) for refuse collection. The technical operation of these EVs were analyzed to implement further operational cost optimization on the demo vehicles. The Electric Vehicles (EVs) were tested against superfast-charging solutions based on Pantograph (Type A & Type B) on the route lines (and depots) and based on Combined Charging System Type 2 (CCS2, Combo2) from various brands to validate the interoperability among several vendors and support further EV integration with more affordable solutions. The optimization includes the calculation of the EBs’ consumption at various seasons and under various operating conditions in order to use optimum battery system design, heating system, optimum EB fleet operation and size and to find the charging solutions properly. The results showed that the EB consumption increases in some cases by 64.5% in wintertime due to heating systems, and the consumption in urban areas is more than that on the route lines outside cities. In the E-truck demo, where the electric heater was replaced with a heat-pump to optimize the energy consumption, it was found that the consumption of the heat-pump is about half of the electric heater under certain operating conditions. Under strict EB schedule, Pantograph charging solutions with power ratings of 300–600 kW have been adopted to charge the batteries of the EBs within 4–10 min. In order to minimize the cumulative costs of energy, (pantograph) charging infrastructure depreciation and battery degradation, as well as depot charging (at the bus operator’s depot), was adopted with a power level of 50–350 kW based on CCS2 and pantograph.
Subject
Electric vehicles
Medium-duty electric vehicles
Heavy-duty electric vehicles
EBs
E-truck
Fast-charging
Opportunity charging
Depot charging
Battery system
To reference this document use:
http://resolver.tudelft.nl/uuid:1047808f-d1e1-4abe-9236-3c1511e9c021
DOI
https://doi.org/10.3390/wevj13010020
TNO identifier
963405
Publisher
MDPI
Source
World Electric Vehicle Journal
Document type
article