Development and analysis of rightsized powertrains for small urban vehicles

Pippuri-Mäkeläinen, Jenni (author), Rupnik, Urban (author), Vukotić, Mario (author), Manko, Roman (author), Alić, Alen (author), Čorović, Selma (author), Miljavec, Damijan (author), Farzam Far, Mehrnaz (author), Keränen, Janne (author), Antila, Marko (author)

This work provides an overview of the key steps involved in designing an electric powertrain for an L7 category vehicle intended for urban and suburban environments. It focuses on mission-specific rightsizing and physical integration into small vehicles. Synthetic driving cycles of Helsinki, Finland, and Regensburg, Germany, created via activity-based transport modeling and dynamic vehicle simulation reveal that urban use cases do not require high power and torque. This allows for smaller battery capacities and electric motor ratings, leading to cost savings in mass production. Moreover, this paper introduces two powertrain variants: a low voltage option and an extensive high voltage option with both conventional conductive and wireless charging systems. The high voltage variant was selected for implementation and for that, the first measurement results are presented. Both low voltage and higher voltage options are technically feasible, but if wireless charging is preferred, the higher voltage configuration is more suitable from a system design perspective.

• Language: English
• Keywords: L7 category vehicle, electric powertrain, design, computational analysis, laboratory measurements
• Typology: 1.08 - Published Scientific Conference Contribution
• Organization: FE - Faculty of Electrical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2025
• Number of pages: Str. 191–197
• PID: 20.500.12556/RUL-169180
• UDC: 621.313/.314:629.331-83
• ISSN on article: 2196-5552
• DOI: 10.1007/978-3-031-89444-2_27
• COBISS.SI-ID: 236057347
• Publication date in RUL: 16.05.2025

Record is a part of a proceedings

• Title: Transport transitions
• COBISS.SI-ID: 236041987

Record is a part of a journal

• Title: Lecture notes in mobility
• Shortened title: Lect. notes mobil.
• Publisher: Springer
• ISSN: 2196-5552
• COBISS.SI-ID: 189926147

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: kategorija vozil L7, električni pogon, oblikovanje, računalniška analiza, laboratorijske analize

Projects

• Funder: EC - European Commission
• Project number: 101006747
• Name: RECONFIGURABLE LIGHT ELECTRIC VEHICLE
• Acronym: REFLECTIVE