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Improving System Design of a Hybrid Powertrain Using Stochastic Drive Cycles and Dynamic Programming

Mattias Åsbogård (Institutionen för tillämpad mekanik) ; Lars Johannesson (Institutionen för signaler och system, Reglerteknik) ; David Angervall (Institutionen för signaler och system) ; Peter Johansson
SAE World Congress & Exhibition, April 2007, Detroit, MI, USA 10.4271/2007-01-0304 , (2007)
[Konferensbidrag, refereegranskat]

A new approach for system design of hybrid powertrains was demonstrated in a case study. The method is based on the following presumptions: The performance of a Hybrid Powertrain Concept (HPC) is evaluated using computer simulation; a HPC cannot be correctly evaluated without an Energy Management Strategy (EMS) for the energy buffer; the optimal EMS is different for each HPC. Dynamic programming was used to generate EMSs that were optimal for the vehicles intended traffic environment and for each given HPC, enabling evaluation of a large number of HPCs. Over-adaptation of the EMSs was avoided by using a stochastic drive cycle model. The final delivery is a competitive powertrain component sizing and the corresponding optimal EMS.

Nyckelord: Hybrid Electric Vehicles, Hybrid powertrains



Denna post skapades 2010-11-01.
CPL Pubid: 128397