Conception optimale d'une chaîne de traction électrique pour une voiture de type Formule SAE

Authors: Roy, Simon
Advisor: Cros, Jérôme
Abstract: The Formula SAE (Society of Automotive Engineers) is a student engineering competition for which students design, build and race a single-seater racing car. Multiple events are organized every year during which the teams can compete against other universities. With more than 500 teams participating worldwide, it is the biggest student engineering competition in the world. The tests include the evaluation of the design, production costs, acceleration of the car, etc. The ULaval Racing team participated during more than 20 years at the annual Michigan competition reserved for internal combustion racecars. In order to adapt to the electrification of transportation and to the new competitions reserved for electric cars, the team designed and manufactured a high performance electric powertrain for their 2015 car. The traditional approach used to design an electric powertrain is to set the desired performances of the vehicle. These criteria include the maximum incline that the car must be able to climb, the desired range and a speed profile over time, also known as road cycle. Unfortunately, this approach is not suitable for the design of an electric powertrain for use in a Formula SAE racecar. Since this type of vehicle is not intended for city driving nor highway driving, the existing road cycles are not representative of the expected operating conditions. The realization of this project required the identification of the road cycle on which the vehicle will operate. It is used as a starting point for the design of the powertrain, which includes the electric motors, the battery pack and the power inverters. The use of a genetic optimization algorithm, followed by a local optimization coupled to a finite element analysis tool yielded an optimal solution suitable for the Formula SAE type race tracks. The drivetrain was designed, manufactured and integrated into the 2015 ULaval Racing vehicle. The car participated in various competitions intended for electric racecars and received multiple awards for its inovative design and its performance.
Document Type: Mémoire de maîtrise
Issue Date: 2016
Open Access Date: 24 April 2018
Grantor: Université Laval
Collection:Thèses et mémoires

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