Derating Strategies for Electric Sports Cars

摘要

Electric motors for sports cars achieve high power densities. In high load cycles, e.g. on race tracks, the components of the powertrain heat quickly. To avoid overheating, the output power of the electric motor must be reduced. This reduction is called "derating" and decreases performance and drivability. This paper proposes a method to optimize race track performance and drivability simultaneously. The method uses validated lumped-parameter thermal networks to predict the endurable power losses in critical components of the powertrain and adapts the allowed output power accordingly.