Estimation of the induction motor parameters of an electric vehicle

With the advent of the electric vehicles, one market niche can be the transformation of the internal combustion engine vehicles into electric vehicles equipped with induction motors. One of the challenges of this process is to establish simple and fast methods to estimate the parameters of the available induction motor. In this paper, a method to estimate unknown parameters of an induction motor equivalent electric circuit is presented and discussed. With the proposed method, the unknown electric parameters can be estimated knowing only the induction motor nominal voltage, current torque, frequency and speed. Knowing the induction motor equivalent circuit parameters, further studies and simulations can be conducted to design the complete traction system (namely the bank of batteries and power converter) to be installed in an electric vehicle.