Multiple Coupled Circuit modeling of Induction Machines under Rotor Bar Fault

Abstract — An accurate and simpler approach for modeling and simulating the dynamic behavior of induction machines under rotor fault is presented here. This method is based on the coupled magnetic circuit theory. The system of differential equations describing the induction machine in presence of rotor broken bar faults is given. The machine inductances are calculated by means of the magnetic energy stored in the air-gap. The proposed model allows a precise study of several machine faults signature in various machine main quantities. Finally, some simulation results illustrate the proposed global in the case of broken rotor bars fault. Keywords—Faults detection, Induction Machine (IM); Fault diagnosis; broken bar