Test bench to emulate an electric vehicle through equivalent inertia and machine dc

In this article is proposed an approach to study electric vehicles based on an experimental platform that adequately reproduces the behavior of electric vehicles by obtaining the correct equivalences between a vehicle and a test bench. In the first part the general dynamic equation of movement of a vehicle is stated, then how to obtain an equivalent dynamic equation for the test bench that represents every one of the variables of the dynamic equation of movement for a vehicle by using a test bench is proposed. The system is constituted by an induction motor (tested motor), associated to the mechanical part through a transmission (bands), inertia (two wheels of automobile, pulleys and arrows) and a CD motor coupled to the induction motor. Finally the simulation results for the models of the proposed system, as well as experimental results that show the possibilities of variation of the test bench under some conditions of operation are presented. These simulations were made in Matlab/Simulink and the tests were made using the TMS320F2812 DSP.