Global control strategy optimization of an asynchronous drive system for an electric vehicle

The specific character of the exploitation modes of the motorization of an electric vehicle for city use attaches considerable importance to the choice of the drive-system control strategy, in so far as the energy consumption of the whole system is concerned. In particular, in high-performance vector-controlled asynchronous drive systems, the classically used flux-control strategies must be redefined, taking into account the special constraints linked first with the structure, then with the mission of the electric vehicle. In this paper, the authors compare different flux-control strategies by considering their influence on the general performance of the vehicle. This comparison is based on a simulation of the working of the whole system using the EASY 5X (Boeing Computer Services) system simulation software.