Study and Conception of a Variable Speed Drive for Induction Machine

Abstract

The main objective of this work is to study, simulate and realize a variable speed drive (VSD) for a three-phase asynchronous machine. We begin our study by a state of the art on the AC-AC converters where various topologies are presented. Then, a study on the VSD markets is presented with its trends. A detailed study of each part of the VSD is presented afterwards before selecting each component from different manufacturers. Matlab/Simulink is utilized for simulation because of its particular performances and its simplicity. A V/f constant control system is applied. As for the PCB layout ORCAD is selected for is vast library. Three simulations are presented in case of three phase source, two phases and single-phase source. Finally, two solutions are presented, with their PCB layers one using IPM and the other using discrete IGBTs. After a comparison between the two solution , The IPM is seen as a better choice.