Induction machine fault detection and quantification by means of superposed analytical models
暂无分享,去创建一个
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.