Modeling and Simulation of Hybrid drive trains with a friendly Man Machine Interface

The use of a simulation package for hybrid vehicle designers is essential to determine the power train component sizes or to evaluate specific energy management strategies. This paper shows a hybrid drive train simulation program with a user-friendly man machine interface, developed in Matlab-Simulinktrade environment. The simulation algorithm is based on a forward approach that permits to obtain more realistic results than a backward one. The program is able to simulate series-hybrid drive trains of either road vehicles or trains. The possibility of simulating railway vehicles has required, in particular, the inclusion of the possibility to define mission profiles in terms of speed versus distance instead of speed versus time