par Sprooten, Jonathan ;Maun, Jean Claude
Référence SPEEDAM(22: 16-18 June 2004: Capri - Italy), International Symposium on Power Electronics, Electrical Drives, Automation and Motion
Publication Publié, 2004-06-16
Publication dans des actes
Résumé : This paper studies the phenomenon of broken bars in induction machines. Time-stepping finite-elements (FE) simulations of healthy and faulty machines with or without saturation are used to prove that a broken bar can be considered as a superposed phenomenon. Moreover, FE simulations are used to study the rotor bar currents distribution representing the superposed state.Then an analytical model of a faulty machine is constructed by adding to a classical analytical model of healthy machine, a second analytical model representing the faulty behavior. By doing this, symmetries in faulty machines can be put forward to quickly quantify the number of broken bars. Quantification from a partially broken bar up to two consecutive broken bars is illustrated. Finally, perspectives of model enhancement and generalization to other faults are presented.