Optimised rating of the components for car-powertrains

At the Technical University of Munich a new powertrain is under development. The aim during the rating of the components and later on the designing of the operational strategy is mainly to reduce fuel consumption. With the control strategy depending on the rated components and vice versa, an offline method for first of all rating the components according to drive-cycles like NEDC, ECE and FTP72 was chosen. The method uses large-scale nonlinear programming to minimise the objective: overall fuel consumption. After a short description of the system, the method for rating the components is briefly described. Later on the paper discusses the results for the optimal rating of the electric drive and the double layer capacitor.