Modeling and simulation of electric machines, converters and systems

This paper presents a study on the application of fuzzy logic theory to control a directdrive dc motor. The design of fuzzy logic controller for speed of a DC motor is presented. Control performance of the fuzzy logic controller is studied by simulation. The simulation results with fuzzy control are compared with those of the conventional controller. 15:30 – Presentation of a Control Law for IM Drive Based on the Dynamic Reconfiguration of a DTC Algorithm and a SVM-DTC Algorithm E. Monmasson, J.P. Louis Abstract – In this paper, the authors present an original control law for induction motor drive. It is based on a dynamic reconfiguration of a basic Direct Torque Control (DTC) algorithm and a Direct Torque Control algorithm associated to Space Vector Modulation (SVM-DTC). The criterion of reconfiguration concerns the state of the machine. Indeed, during transient states DTC algorithm is activated in order to get the best torque dynamic. Then, at steady-state, a SVM-DTC algorithm is preferred because it allows to reduce significantly the torque ripples. Besides, an original and welladapted modelling based on a polar representation of the state variables is also introduce. Finally, experimental results are presented that confirm the interest of this solution.