TECHNIQUES FOR ONLINE DETECTION OF SHORTS IN TURBINE GENERATOR ROTOR

CAUSES FOR SHORTED TURNS
COIL FORESHORTENING
END-STRAP ELONGATION
FOREIGN MATERIAL CONTAMINATION
BLOCKING PROBLEMS

1.COIL FORESHORTENING
BODY CU CANT EXPAND FREELY
MINIMISE BY USING MATERIALS WITH
SUFFICIENT YIELD STRENGTHS

WHY DETECTION IS IMPORTANT
ROTOR UNBALANCE
VIBRATION
HIGHER FIELD CURRENT IS REQUIRED
HIGHER TEMPERATURE WILL RESULT
DIMINISHED CAPACITY

COMPARISON[/ ....etc

[:=Read Full Message Here=:]

Numerical simulation of rotor stator interaction is crucial for turbo machinery improvement since it allows the optimization of blade path design In addition the numerical simulation of rotor stator interaction makes it possible to predict the location and variation of hot spots on blades which is extremely useful in the turbine thermal design However simulation of rotor stator interaction is notorious for being computationally expensive To reduce the turnaround time and cost MFLOP a parallel code based on the message passing interface l ....etc

[:=Read Full Message Here=:]

AIM:
To conduct the No Load test and Blocked rotor test on three phase squirrel cage induction motor and to draw the equivalent circuit.
FUSE RATING:
No load: 10% of rated current (Full load current)
Load: 125%of rated current (Full load current)
APPARATUS REQUIRED:
PRECAUTIONS:
The autotransformer should be kept at minimum voltage position.
PROCEDURE:
Note down the name plate details of motor.
1. For no-load open circuit test by adjusting autotransform ....etc

[:=Read Full Message Here=:]

AIM:
To conduct the no load & blocked rotor test on 3- phase induction motor
& to draw the equivalent circuit of 3- phase squirrel cage induction motor.
FUSE RATING :-
125/100 * 7.5 A ≈ 10A
THEORY :-
A 3-phase induction motor consists of stator, rotor & other associated parts. In the stator
,a 3- phase winding (provided) are displaced in space by 120. A3- phase current is fed to the winding so that a resultant rotating magnetic flux is generated. The rotor starts rotat ....etc

[:=Read Full Message Here=:]

A technique for on-line detection of incipient faults in the windings of turbine - generator rotors has been developed based on the twin signal sensing method. To detect the developing shorts in any winding, two identical pulses are applied to both ends f the winding and are reflected back .Any abnormality in the winding results in the applied signals being reflected through nonsymmetrical circuits. The difference between the reflected signals are amplified and used as signature signal for further processing. This paper describes the developmen ....etc

[:=Read Full Message Here=:]

can anyone provide me with information on topic Microstructural modelling of branched block and linear block polyolefins ....etc

[:=Read Full Message Here=:]

kINDLY GIVE A IDEA ABOUT THE ROTOR SHAFT MATLAB CODING. ....etc

[:=Read Full Message Here=:]

hi.....plz post more information regarding the above mentioned topic........

raviteja ....etc

[:=Read Full Message Here=:]

i want each block explanation n why we are using that blocks,working operation
....etc

[:=Read Full Message Here=:]

rotor shop in dlw ....etc

[:=Read Full Message Here=:]