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

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ABSTRACT
A new generation of small scale (less than 20 MWe) biomass fueled, power plants are
being developed based on a gas turbine (Brayton cycle) prime mover. These power plants
are expected to increase the efficiency and lower the cost of generating power from fuels
such as wood. The new power plants are also expected to economically utilize annual
plant growth materials (such as rice hulls, cotton gin trash, nut shells, and various straws,
grasses, and animal manures) that are not normally considered as fuel for power plants.
This p ....etc

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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

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

raviteja ....etc

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INTRODUCTION

Quasi turbine is a zero vibration continuous combustion rotary engine having four faces articulated rotor with a free and accessible centre rotating without vibration nor dead time and producing a strong torque at low rpm under a variety of modes and fuels. The quasi turbine is also an optimization theory for extremely compact efficient engine concept.

It is a new engine concept from Canada offers a design similar to that of rotary engines but with the advantages of a gas turbine-all within the confines of a chamber based on ....etc

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plz send the detail matter for MICRO TURBINE to my id- [email protected] ....etc

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STEAM TURBINE
1. INTRODUCTION
A steam turbine is a mechanical device that extracts thermal energy from pressurized steam, and converts it into rotary motion. Its modern manifestation was invented by Sir Charles Parsons in 1884.
Definitions of steam turbine:
¢ turbine in which steam strikes blades and makes them turn
¢ A steam turbine is a mechanical device that extracts thermal energy from pressurized steam, and converts it into rotary motion. Its modern manifestation was invented by Sir Charles Parsons in 1884 ....etc

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The gas turbine has been an enormously successful power plant for aircraft and marine propulsion, and electric power generation, due to its lightweight, smooth and reliable operation, low emissions, and varied applications. Nevertheless, it is not very efficient in converting fuel energy to useful work, due to fundamental thermodynamic limitations imposed by turbo machinery technology.

In recent years, there is renewed interest in the potential high efficiency of alternative thermodynamic cycles and unsteady combustion systems for propul ....etc

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SYNOPSIS
An alternative configuration for a regenerative gas turbine engine cycle is presented that yields higher cycle efficiencies than either simple or conventional regenerative cycles operating under the same conditions. The essence of the scheme is to preheat compressor discharge air with high temperature combustion gases before the latter are fully expanded across the turbine. The efficiency is improved because air enters the compressor at a higher temperature, and hence heat addition in the co ....etc

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Micro turbines are becoming widespread for distributed power and combined heat and power applications. They are one of the most promising technologies for powering hybrid electric vehicles. They range from hand held units producing less than a kilowatt, to commercial sized systems that produce tens or hundreds of kilowatts.Part of their success is due to advances in electronics, which allows unattended operation and interfacing with the commercial power grid. Electronic power switching technology eliminates the need for the generator to be syn ....etc

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