Determination of Core Losses and Optimal Values of Rotation Rate of an Induction Motor Driving a Compact Electric Vehicle under Different Parameters and Conditions

Abstract

Environment and transport are currently among the top priorities at local, national and global levels. Related to this is vehicle electrification as one of the major targets. In this regard, over the last few decades, the energy efficiency of electric motors has been important focus for both manufacturers and end users. A part of the efforts is to develop new ways for increasing the energy efficiency of three-phase induction motors. The useful power of the shaft characterizes the efficient operation of the electric drive and the electric power - the consumption of electricity per unit time. Efficiency is one of the main parameters of an induction motor, which determines its energy properties - economy in the process of operation. Efficiency can be implicitly obtained by the motor losses determining, Moreover, the efficiency of the motor, and in particular the magnitude of its losses, regulates the heating temperature of its main parts. For its part, as a specific toolkit, mathematical modeling of induction motors has a very long history and has so far been an exciting topic for research. Paper deals with determination of core losses when operating an induction type electric motor applicable to the driving of an electric vehicle. Optimal values of motor speed under different parameters and conditions are also determined. A mathematical model of an electromechanical system has been used. Considering the results obtained, some of which are presented in tables and graphs, relevant conclusions are drawn.