A comprehensive review on mechanical failures cause vibration in the
Unwanted vibration is the main cause of the mechanical breakdown of the gas turbine in the Combined Cycle Power Plants. Unbalancing of the rotor shaft is the most common reason in
Blades rubs and looseness detection in gas turbines
This paper presents operational experience of vibration analysis for blade related failures and rubs from the blades (rotor and stator blades) as well as a supporting laboratory study with
How to Use Vibration Analysis for Motor and Generator
In this article, you will learn how to use vibration analysis to detect and troubleshoot common noise problems in motors and generators. Find expert answers in this
Wind turbine generator failure analysis and fault diagnosis: A review
Numerous statistical studies have pointed out that generator failures are a main cause of wind turbine system downtime. The generator, as one of the core components, converts rotating
Analysis of the cause of abnormal noise from generator blades
The abnormal broadband noise and vibration have occurred in the generator in the driveline of the internal combustion engine power plant. This paper focuses on the
Influence of Rotor Eccentricity on Electromagnetic Vibration in
Abstract: Rotor eccentricity faults can cause uneven air gaps in the generator, reducing power quality and increasing vibration noise, eventually leading to abnormal operation.
(PDF) Study of hydraulic turbine flow-induced noise distribution law
In order to analyse flow-induced noise distribution law under the defective runner blade, this paper performs defective treatment on the runner blade according to the HLA855a-LJ-250...
CN115855461A
In view of the above problems, the present invention aims to provide a system and a method for detecting the abnormal noise of a fan blade of a wind turbine generator, which combine the...
Gas Turbine Engine Noise Reduction
The underlying cause of this noise is the interruption of the low velocity blade wakes (figure E.6) by the following stators. The stators feel intermittent changes of lift, which affect their pressure field and
Analysis of Abnormal Vibration of a Large Francis-Turbine Runner and
It was found that the cause was that the natural frequencies of the blades are close to their Kamen excitation frequencies, resulting in resonance. Measures were taken to raise the Kamen excitation
PDF version includes complete article with source references. Suitable for printing and offline reading.