Influence of battery size on predictive control for hybrid cars

This paper describes the influence of battery size and electric motor size on the fuel saving potential of a predictive operation strategy for hybrid cars. This predictive control is an enhancement of a standard operation strategy for a parallel hybrid car. Therefore the information about the potential energy along a given route is estimated and included in the determination of operation points of the hybrid control strategy. Smaller batteries benefit most from the knowledge of the potential energy characteristic of a route. This benefit is even higher if the power of the electric motor in the hybrid drivetrain is increased.