Evaporate Cooling of Turbine Generator Rotor Windings

1971 ◽  
Vol PAS-90 (6) ◽  
pp. 2749-2758 ◽  
Author(s):  
H. Koizumi ◽  
T. Ohshima
Keyword(s):  
Turbine Generator ◽  
Generator Rotor

Predictive Maintenance Using the Rotordynamic Model of a Hydraulic Turbine-Generator Rotor

1998 ◽  
Vol 120 (2) ◽  
pp. 441-448 ◽  
Author(s):  
Bernhard P. Bettig ◽  
Ray P. S. Han
Keyword(s):  
Numerical Model ◽  
Life Prediction ◽  
Hydraulic Turbine ◽  
Predictive Maintenance ◽  
Maintenance Period ◽  
Turbine Generator ◽  
Generator Rotor ◽  
Online Measurements ◽  
Deterioration Mechanism ◽  
Two Degree Of Freedom

A use of rotordynamic models in predictive maintenance is described in which variables characterizing the state of a deterioration mechanism are determined from online measurements. These variables are trended to determine the rate of deterioration and to perform a simulation to predict either the machine life or the maintenance period. Some useful terms for using models in predictive maintenance are defined and the prediction procedure is described. The procedure is demonstrated with a simple two degree-of-freedom example and the numerical model of an actual hydraulic turbine-generator rotor. Some benefits and problems associated with the implementation of the procedure are then discussed. It is considered that this procedure brings the possibility of a better understanding of deterioration processes and a resulting better life prediction.

Neural network based modeling of a large steam turbine-generator rotor body parameters from on-line disturbance data

2001 ◽  
Vol 16 (4) ◽  
pp. 305-311 ◽  
Author(s):  
H. Bora Karayaka ◽  
A. Keyhani ◽  
G.T. Heydt ◽  
B.L. Agrawal ◽  
D.A. Selin
Keyword(s):  
Neural Network ◽  
Steam Turbine ◽  
Turbine Generator ◽  
Generator Rotor ◽  
On Line ◽  
Body Parameters

Turbine Rotor Tooth Head and Stress Analysis of Wedge

2013 ◽  
Vol 395-396 ◽  
pp. 856-861
Author(s):  
Li Li Zhao
Keyword(s):  
Structural Design ◽  
Turbine Rotor ◽  
Structure Modification ◽  
Ansys Software ◽  
Turbine Generator ◽  
Element Analysis ◽  
Generator Rotor ◽  
The Stability ◽  
Rotor Tooth ◽  
Rotor Structure

The turbine generator rotor and the wedge is an important part of the turbogenerator. In order to ensure the stability and reliability of the steam turbine during operation, it needs to calculate and analyze the strength of the generator rotor and the wedge. In this paper, we did the study of the turbine generator rotor and the strength of the wedge by finite element analysis. by using ANSYS software, when in operating speed and speeding, we compared to the results of the calculation of plane and solid elements, and found that the safety factor of the plane was lower. Based on the results of two calculations, we got the generator rotor structure modification and optimization of the structural design, which improve the strength of the generator rotor tooth head and wedge.

scholarly journals An Innovative Methodology for Wind Turbine Generator Rotor Blade Manufacturing Hazard Identification and Risk Assessment

2021 ◽  
pp. 216-222
Author(s):  
Aditya Tiwary ◽  
Saurabh Deshmukh
Keyword(s):  
Risk Assessment ◽  
Risk Analysis ◽  
Wind Turbine ◽  
Rotor Blade ◽  
Quantitative Methods ◽  
Hazard Identification ◽  
Turbine Generator ◽  
Wind Turbine Generator ◽  
Generator Rotor ◽  
Innovative Methodology

Hazard analysis uncovers and identifies hazards that exist in the workplace, generally focusing on a particular activity, project, or system. It develops a means to – communicate, track, quantify, allocate mitigation measures, verify effectiveness. The objective of this paper is to obtain hazards and risk analysis, the event sequences leading to hazards and the risk associated with hazardous events. Many techniques ranging from the simple qualitative methods to the advanced quantitative methods are available to help identify and analyze hazards. An innovative methodology is presented here to obtain the hazards and risk analysis in Wind Turbine Generator Rotor Blade Manufacturing unit for three different processes. The three different process on which Hazard Identification and Risk Assessment has been done are MPRP/Resin & Hardner mixing Process, MPRP/Kitting Process and Prefab/MG O & X Process.

Electromagnetomechanical Coupled Vibration Analysis of a Direct-Drive Off-Shore Wind Turbine Generator

2015 ◽  
Vol 10 (4) ◽  
Author(s):  
Michael Kirschneck ◽  
Daniel J. Rixen ◽  
Henk Polinder ◽  
Ron A. J. van Ostayen
Keyword(s):  
Wind Turbine ◽  
Structural Dynamics ◽  
Large Diameter ◽  
Air Gap ◽  
Direct Drive ◽  
Turbine Generator ◽  
Wind Turbine Generator ◽  
Generator Rotor ◽  
Turbine Generators ◽  
Wind Turbine Generators

In large direct-drive off-shore wind turbine generators one challenge is to engineer the system to function securely with an air gap length of about a thousandth of the outer rotor diameter. Compared to the large diameter of the generator rotor, the rolling element bearings can only be constructed with a relatively limited size. This makes it challenging to design appropriate constructions able to transmit the large applied magnetic forces encountered in the air gap of direct drive wind turbine generators. Currently, this challenge is met by designing stiff heavy rotors that are able to withstand the forces in the air gap. Incorporating flexibility into the design of the rotor structure can lead to a lighter less expensive rotor. In order to be able to do this the magnetomechanical coupling in the air gap and its effect on the structural dynamics need to be taken into account when predicting the intended flexibility. This paper introduces an approach for a multiphysical modal analysis that makes it possible to predict the dynamics of the strongly coupled magnetomechanical system. The new method is validated using measurements of a simple lab setup. It is then applied to a single-bearing design direct-drive wind turbine generator rotor to calculate the changes of the structural dynamics caused by the electromagnetomechanical coupling.

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