Vibroacoustic Signal-Based Diagnosis for Rotor Faults in Large Synchronous Machines - an Overview

The objective of this paper is to present an overview of how vibroacoustic signals can be used to diagnose rotor faults in synchronous generator, specifically focusing on large hydrogenerators commonly used in power plants. The paper showcases an investigation highlighting the effectiveness of vibration and acoustics measurement in detecting common defects found in these machines, such as eccentricities, inter-turn short-circuits, and rotor broken bar faults. To accomplish this, the paper conducts an extensive literature review, comparing the advantages and disadvantages of various techniques used in diagnosing these faults.