DWT for Rotor Bars Fault Detection Applied to Backstepping Control Induction Motor Drive in Low-Speed

摘要

This paper presents a rotor bars fault diagnosis in low-speed for the induction motor drive. The backstepping algorithm is employed to preserve a good control performance and to avoid different uncertainties in order to have good signals acquisition for the diagnosis process. The used technique for the fault detection is the discrete wavelet transforms which applied to analyze the stator phase current and the output signal of the speed regulator. Furthermore, the calculation of the energy stored in each decomposition can evaluate the effect of the fault. The controls of the induction motor and their diagnosis have been investigated experimentally using Matlab/Simulink environment with Real-Time interface based on the dSpace 1104.