EL GAMAH, Ahmed Wassim (IFP Energies Nouvelles / Université Gustave Eiffel), SCIARRETTA, Antonio (IFP), Gruyer, Dominique (Université Gustave Eiffel), Sainct, Remi (Gustave Eiffel University), EL GANAOUI-MOURLAN, Ouafae (IFP Energies Nouvelles)

A Downscaling Approach for Electric Vehicle Dynamics : An Application of Similitude Laws

Scheduled for presentation during the Invited Session "S21b-Energy-Efficient Connected Mobility" (TH-EA-T21), Thursday, November 20, 2025, 14:50−14:50, Surfers Paradise 3

2025 IEEE 28th International Conference on Intelligent Transportation Systems (ITSC), November 18-21, 2025, Gold Coast, Australia

This information is tentative and subject to change. Compiled on October 18, 2025

Abstract

This article explores the application of similitude theory to analyze electric vehicle dynamics and the challenges of downscaling full-size vehicles for experimental testing. It discusses the complexities of maintaining dynamic similarity between full-scale and reduced-scale models, focusing on the influence of mass scaling and inertial effects on acceleration and braking. The study presents the fundamental equations governing electric vehicle motion and emphasizes the crucial role of scaling factors in relating parameters between different scales. A key aspect is the analysis of power delivered to the wheels, with derived equations establishing relationships between power output in full-scale and reduced-scale models. The article also proposes several approaches to achieve power similitude, each with specific assumptions and conditions, and highlights the derivation of a theoretical relationship enabling power output estimation between reduced-scale and full-scale electric vehicles.