Evaluation of Electric Power Losses of an Induction Motor Driving a Compact Electric Vehicle at Change of Parameters and Loads

Nowadays, the search for ways to increase the efficiency of electric vehicles is particularly relevant. However, ultimately, the purpose of electric mobility is, besides ecology, to be as cheap as possible. As with conventional cars, the cost is directly related to power. Everything in an electric car is subject to maximum energy savings. A condition for the development of electric vehicles is the use of suitably designed electric motors as a driving component of the electromechanical system. At present, in electric vehicles induction motors are mainly used for better efficiency and due to their known advantages. The motor, subject of research, is suitable for fast and easy vehicle conversions by replacing the engine of many compact front wheel drive vehicles. Paper deals with evaluation of the combined influence of changing the equivalent circuit parameters and the total moment of inertia on the electric power losses in a compact electric car drive in the dynamic modes arisen. Simulations have been performed using an appropriate mathematical model of electromechanical system. Results in tabular and graphical form have been obtained. Relevant conclusions have been made. Except for analysis, the developed model can also be used to finding a solution of the opposite task - development of electric motors and control systems with parameters, guaranteeing ongoing processes at user-defined requirements.