Optimal design of energy storage systems for hybrid vehicle drivetrains

Current hybrid powertrain simulation packages arebased on discrete (existing) system components and predefinedsystem structures. Optimization of the performance of the hybridpowertrain is then based on finding the most efficient controlstrategy of the primary and secondary power source and finallycomparing the performance of the different candidate powertrainsfulfilling the required driving functions. In this paper, thesecondary power source components are modeled continuously,i.e., scalable to power and/ or energy capacity needs. In thisway, the size of the components can be added as an optimizationparameter to a hybrid powertrain design procedure