Automated topology optimisation of hybrid electric vehicle powertrains Online publication date: Fri, 12-Feb-2016
by Adam H. Ing; John McPhee
International Journal of Electric and Hybrid Vehicles (IJEHV), Vol. 7, No. 4, 2015
Abstract: Gasoline and electric powertrain components can be connected in numerous configurations to create hybrid powertrains. Owing to the exponential increase of permutations as the number of components increases, a framework to determine the best possible powertrain configuration that minimises fuel consumption was developed. This framework uses enumeration to discover all powertrains, the Graph-Theoretic Method to generate system equations, dynamic programming to evaluate fuel consumption and generate an objective score, and Pattern Search to optimise the sizing of each component. A multi-stage screening process was used to reduce computation time. Parallel and powersplit-like topologies with additional discrete gearboxes were found to be the most efficient. The best performing topology is a powersplit hybrid type: a discrete gearbox connected to the final drive, with the output gear of the planetary carrier and electric motor in parallel.
Online publication date: Fri, 12-Feb-2016
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