Hussain Shafi, Electric Vehicle Engineering Student at UNIBO has published a project in the ambit of the course Electric Motor Design delivered by Prof. Giacomo Sala.
«In this report we have designed a 3 phase Induction motor and an SPM (Surface Mounted Permanent Magnet) motor both with different specifications. All the analytical equations are implemented in Matlab for preliminary sizing of motor and useful graphs while the FEA analysis is done using FEMM software which is an open-source software that can simulate the Electromechanical models. By using some additional libraries for Matlab, and it is possible to see how it is done in the report».
The project involves designing and sizing of SPM Motor and Induction Motor and the thermal aspects were also realized in this project.
A 3-phase induction motor is an electromechanical energy conversion device which converts 3-phase input electrical power into output mechanical power. A 3-phase induction motor consists of a stator and a rotor. The stator carries a 3- phase stator winding while the rotor carries a short-circuited winding called rotor winding. The stator winding is supplied from a 3-phase supply. The rotor winding drives its voltage and power from the stator winding through electromagnetic induction and hence the name. IMs are less expensive, do not suffer demagnetization, and they are often more reliable and simpler to manufacture as compared to SPM motors. The disadvantage of this motor typology is its insufficient performance in terms of efficiency and power factor.