Induction motors are used worldwide as the “workhorse” in industrial applications. Although, these electromechanical devices are highly reliable, they are susceptible to many types of faults. Such fault can became catastrophic and cause production shutdowns, personal injuries, and waste of raw material. However, induction motor faults can be detected in an initial stage in order to prevent the ...

This paper proposes a fault-detection system for faulty induction motors (bearing faults, interturn shorts, and broken rotor bars) based on multiresolution analysis (MRA), correlation fitness values-based feature selection (CFFS), artificial neural network (ANN). First, this study compares two feature-extraction methods: the MRA Hilbert Huang transform (HHT) induction-motor-current signature an...

Safety, disponibility and continuity of industrial systems are major issue in maintenance. In the last decades, these points important axes field research. fact, many processes research has picked up a fervent place particular importance area fault diagnosis electrical machines, prognosis become almost indispensable. The need mathematical model three-phase induction machine, suitable for simula...

The interturn short circuit fault in rotor windings is a common synchronous condenser. Aiming at the early faults that are difficult to detect, theory of multi-source information fusion applied herein for identification Firstly, field-circuit-network coupling model condenser high-voltage direct current (HVDC) transmission was constructed using SIMULINK/ANSYS. air gap magnetic flux density regul...

Currently, AC motors are a key element of industrial and commercial drive systems. During normal operation, the machines may become damaged, which pose threat to users. Therefore, it is important develop fault detection method that allows for at an early stage. Among currently used diagnostic systems, applications based on deep neural structures dynamically developed. Despite many examples lear...

This study investigates partial demagnetization faults arising from stator interturn in a surface-mounted permanent-magnet-type brushless direct current motor. Because of rotor demagnetization, the fault severity increases significantly owing to an increase phase and temperature. The effect such is reflected machine parameters as motor back-EMF radial magnetic flux, which are used analyse chara...

The follow-up of the construction of superconducting magnets for accelerators requires setting up of powerful diagnostic tools to detect weak electrical points in the superconducting coils at various stages of their fabrication. In particular some electrical short circuits well detectable after collaring of the magnet often disappear after the coil is uncollared for repair; therefore it is pref...