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Design and Control of An Optimized Traction Chain for Electrical Vehicles
Published April 06, 1994 by Societe des Ingenieurs de l'Automobile in France
The definition of sizing parameters of the traction chain is a very delicate operation, taking into consideration the complexity of its operating mode within a particularly elaborated system. To solve this problem, a research action was taken at the MIRGAS lab, which intends to develop a system approach oriented towards the design of the motorization of the urban electric train.
In this article, the authors are presenting the operation of a system simulation tool, EVSYS (Electric Vehicle System Simulator), intended to optimize the design, then the control of direct current traction chain for an urban vehicle.
The architecture and the possibilities of the EVSYS simulator are briefly presented first. With the help of this tool, the authors make first a sensitivity analysis of the various parameters intervening in the definition of the system.
An estimation of the motorization sizing is then performed with reference to an existing moto-propulsion group. The partial optimization of its sizing is then performed by parameter variation, taking into consideration its consequences on the performance of the overall system.
Finally, on the basis of the direct current motorization considered, the problem of optimizing the machine control is considered. A strategy of specific control of the inductor flux, synthesized taking into consideration the urban use of the vehicle, is then presented and validated by simulation.