Abstract:

The widespread use of Asenkron engines in industrial production processes has made it necessary that these engines are detected correctly and fully. The broken rotor bars and axinal leakage defects are among the types of defects that occur in asynchronous engines. The occurrence of these two failures at the same time is a situation that is often encountered in the business environment. In such moments, the ability to clearly identify the harmonic components of these defects is important in order to prevent unplanned operating positions. Other signals at the beginning of the major problems that are faced in the detection of these components (luck, overwhelming harmonic components, etc.) There are low-costed harmonic components hidden inside. In this study, multiple failure status, consisting of axle gap and broken rotor stripes, was studied. The engine’s flow and vibration signals were recorded in four different load stages (25% and 50% and 75% and 100%) and signal analyses were performed by Hilbert’s cover analysis method. As a result of the analysis, the characteristic frequencies and the widths of these components can be successfully displayed in the cover spectrum. The results in the graphic and table form indicate that the recommended method can be used to detect broken rotor bar and axle gap defects that are formed simultaneously.

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