Regenerative Braking Strategy of a Formula SAE Electric Race Car Using Energetic Macroscopic Representation

Abstract

This paper presents a braking strategy analysis for a Formula SAE electric race car. The proposed braking strategy aims to increase the recovery energy by a relevant distribution of the braking forces between the rear and front wheels. A mathematical model of the car is presented, and a simulation is performed in Matlab-Simulink. The model is organized using the energetic macroscopic representation graphical formalism. A real racetrack driving cycle is considered. Three braking strategies are compared considering the energy recovery and the vehicle stability. The simulation results show that the proposed strategy enables higher energy recovery while avoiding locking on both rear and front wheels. As in such a race the driving range is fixed, the reduction in energy consumption can be used to reduce the battery size. The battery weight can thus be decreased to improve the vehicle performance during competition.

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The different versions of the original document can be found in:

• https://www.mdpi.com/2032-6653/11/2/45/pdf under the license https://creativecommons.org/licenses/by

• https://www.mdpi.com/2032-6653/11/2/45,

https://doaj.org/toc/2032-6653 under the license cc-by

• https://www.mdpi.com/2032-6653/11/2/45,

https://www.mdpi.com/2032-6653/11/2/45/pdf,

https://academic.microsoft.com/#/detail/3035709387

• https://www.mdpi.com/2032-6653/11/2/45/pdf,

http://dx.doi.org/10.3390/wevj11020045

under the license https://creativecommons.org/licenses/by/4.0/