Influence to the electrical and mechanical sub system due to inverter control processes on a power train of electric vehicles

Abstract

As electrical energy depicts itself as a future-orientated strategy for drives used in passenger cars, it is necessary to consider the conditioning of electrical energy to be used for electrical machines. The high frequent influence to the whole power train is evaluated with a view to the electrical and mechanical components. This influence is determined in reference to a comparison between a symmetric pulse wide modulation and a stator orientated hysteretic control (bang-bang-control). As electrical drives for electric vehicles need to have a wide speed range and likewise be robust the chosen control processes are checked out by using a permanent magnetic synchronous machine (PMSM) [1, 2, 3, 4]. This also offers the opportunity of a gearless drive which by the way offers a big advantage in comparison to combustion engines. For best comparison settings the energy source is realized by an ideal voltage source. To connect these components there is an inverter which builds up three-phases and likewise a rectifier in the opposed direction with a set of IGBTs and integrated antiparallel diodes. The command signal is set by the same conditions as in an traditional car by the torque demand of the acceleration pedal.