Optimal Control of Electric Vehicle Power Chain

In this paper, a methodology of scalar control of the electric cars power chain is described. This methodology takes into account of system interactions. This type of control is suitable for converter with electromagnetic switches. The choice of this conve push the multiple disadvantages of the IGBTs converters and especially to reduce the cost of global power chain.The overall model of the power chain implanted under the Matlab simulation environment, leads to results of very g In this paper, a methodology of scalar control of the electric cars power chain is described. This methodology takes into account of system interactions. This type of control is suitable for converter with electromagnetic switches. The choice of this conve rter is in order to push the multiple disadvantages of the IGBTs converters and especially to reduce the cost of global power chain.The overall model of the power chain implanted under the Matlab -Simulink simulation environment, leads to results of very g ood standard. In this paper, we present a systemic scalar control and design method of electric vehicle (EVs) power chain , taking into account several constraints such as the speed limit, the energy saving, the cost of the power chain and the reliability of the whole s ystem. This method is based firstly on the analytical sizing of the power chain, and secondly on the analytical modeling of the controll parameters of the electric actuator (1), (2), (3), (4), (5), . It takes into account the compatibility between the c omponents of the power chain to reach the critical level of performance of the global system. This approach is based on the application of the general theorems relating to the design of electrotechnical devices (7), . The global design model provid es results relating to the manufacturing of the electric motor, converter and the mechanical transmission system (1), (2), (3). These results increases the compatibility of this approach with the optimization procedures of EVs limit, the autonomy, the production cost etc (1). This study ends with a validation study of the design approach. Indeed, the simulation of the electrical, mechanical and magnetic behavior on a global control model of this chain fully validates Several configurations of power chain are shown in the literature. We cite as examples: engine wheels configuration to direct mechanical linkage or gears. The configuration with two motors front or rear to direct connection or with gear. engine configuration with mechanical differential transmission more gears or gearless. This configuration is chosen for our application because it offers the advantage of low cost, because the manufacture of a s ingle motor is less expensive than many engines.