2020/05/15 by Olaf Borsboom, Borsboom, Olaf, Chyannie A. Fahdzyana +5
Engineering · #Electric Vehicles and Infrastructure #Electric and Hybrid Vehicle Technologies #FOS: Electrical engineering #Systems and Control (eess.SY) #Vehicle Dynamics and Control Systems #electronic engineering #information engineering
paper · pdf · doi:10.48550/arxiv.2005.07592
openalex publication_date 2020/05/15 · openalex created_date 2022/07/26 · openalex updated_date 2026/07/28
This paper presents models and optimization methods to rapidly compute the\nachievable lap time of a race car equipped with a battery electric powertrain.\nSpecifically, we first derive a quasi-convex model of the electric powertrain,\nincluding the battery, the electric machine, and two transmission technologies:\na single-speed fixed gear and a continuously variable transmission (CVT).\nSecond, assuming an expert driver, we formulate the time-optimal control\nproblem for a given driving path and solve it using an iterative convex\noptimization algorithm. Finally, we showcase our framework by comparing the\nperformance achievable with a single-speed transmission and a CVT on the Le\nMans track. Our results show that a CVT can balance its lower efficiency and\nhigher weight with a higher-efficiency and more aggressive motor operation, and\nsignificantly outperform a fixed single-gear transmission.\n