How to choose drive's rated power in electrified urban transport?

Selection of drive's rated power influences not only vehicle's dynamics, but also its energy efficiency. Mentioned above approach requires a multiphysical model, which covers both mechanical and electrical phenomena. This paper discusses how selection of traction drive's rated power influences vehicle energy consumption on example of a trolleybus. A complex mathematical model was developed in Matlab/Simulink to describe the multiphisical dependencies. Several driving scenarios were proposed to compare the energy consumption between trolleybuses equipped with medium- and high-power electric drive in different conditions. Numerical investigations reveal the possibility of gaining substantial energy savings using of the high-power drive.