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detecting internal FAUlTS IN A TRANSFORMER WINDING


Posted by: Wifi
Created at: Wednesday 27th of October 2010 11:35:03 PM
Last Edited Or Replied at :Wednesday 27th of October 2010 11:35:03 PM
WINDING , TRANSFORMER, FAUlTS , internal, detecting , winding faults in three phase transformer, winding faults inthree phase transformer , internal faults transformer windings, interturn short in transformer , detecting internal faults in a transformer winding pdf, how to detect fault in transformer winding , electrical seminar of buchholz relay, detection of internal faults in transformers , magnetic unbalance test on 3 phasw transformer, single phase transformer magnetic balance test , magnetic balance test of transformer, transformer interturn fault detection with relay , transformer internal fault detection, project topics related to windings of transformer , inter turn fault of three phase transformer,
idence multiple faults which occur concurrently within transformers.
Faults affecting magnetic circuits cannot be detected by electrical devices and can only be detected by mechanical devices

CONCLUSION
Get the overview of faults and how it can be detected in a transformer winding.
We can improve the overall safety associated with transformer failures.
Investigation has been on two-winding single-phase transformer but this method is also useful for three-phase transformer and can be extended to use in all part of transformer winding

REFERENCE

Subhasis Nandi “A N..................[:=> Show Contents <=:]



List of mechanical Seminar topics3


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:15:31 PM
Last Edited Or Replied at :Friday 02nd of January 2015 12:16:13 PM
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CVCC
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Smart Materials
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Liquid Hydrogen as an Aviation Fuel
Robotic Pioneering
BlueTec
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Hyperplane
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Robots In Radioactive Environments
Therrmophoresis
Modern Air Pollution Control Technologies
Common Rail Direct Injection (Crdi) Engines
Thermo Hygrometer
Future of Portable Power
Automobile Air Conditioning
Transfer Machines
Micro- and Na..................[:=> Show Contents <=:]



List of mechanical Seminar topics2


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:14:45 PM
Last Edited Or Replied at :Saturday 20th of September 2008 12:14:45 PM
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gical fluid
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Hybrid vehicles
Six stroke engines
Scramjet engine
Probabilistic design of mechanical components
Regenerative braking
Damage identification in aging aircraft structures with piezoelectric wafer active sensors
3 Axis Digital Accelerometer
Smart material actuators
Biologically inspired r..................[:=> Show Contents <=:]



Frictionless Compressor Technology


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:11:18 PM
Last Edited Or Replied at :Friday 14th of December 2012 01:34:04 AM
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trifugal compressors use roller bearings and hydrodynamic bearings, both of which consume power and require oil and lubrication system. This can be overcome by the introduction of new compressor technology called frictionless compressor technology. The frictionless compressor technology is compressor with the application of magnetic bearings and permanent magnet synchronous motor. In frictionless compressor instead of roller bearings and hydrodynamic bearings, magnetic bearings are used. Magnetic bearings consume less power and there is no need for oil and lubrication systems. Permanent magnet..................[:=> Show Contents <=:]



List of mechanical Seminar topics7


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:09:13 PM
Last Edited Or Replied at :Monday 29th of April 2013 02:08:03 AM
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MHD Submarine
Can a ship fly?
Air pollution from marine shipping
Modified four stroke engine
Sensotronic Brake Control System
Avionics
Smart aerospace structures..................[:=> Show Contents <=:]



List of mechanical Seminar topics6


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:08:44 PM
Last Edited Or Replied at :Saturday 01st of August 2009 08:30:41 AM
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And Emission
Reduction Technology
Selective Plating
Desktop Manufacturing
ABS System
Electric Cylinders
Models Of Random Damage
Test Ranges / Facilities/Readiness
Intelligent Vehicles
3D Solar cells
Intelligent Vehicles and Automated Highways
Self Monitoring Pneumatic systems
Magnetic Resonance Imaging
Globe valves
Photomechanics
Load Cells
Microscale Breaking Waves And Air-Sea Gas Transfer
Analysis and Design Methods of Distributed Sensor
Systems for Manufacturing Quality Improvement
Fused Deposition Modelling
Temperature Resistant Alloys
Variable Speed Drives
Rapid ..................[:=> Show Contents <=:]



Flywheel Batteries


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:06:57 PM
Last Edited Or Replied at :Thursday 11th of September 2014 07:14:47 AM
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etrieved either through direct mechanical or electrical translation....................[:=> Show Contents <=:]



MegaSquirt


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 12:00:34 PM
Last Edited Or Replied at :Saturday 20th of September 2008 12:00:34 PM
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akes it the least-expensive system for this purpose. Basic costs are below US$200 as of 2005, although this can vary widely depending on application.

MegaSquirt is a successor of sorts to Bowling and Grippo's earlier EFI332 design, which was more complex yet more powerful system (at least initially). The EFI332 project started around 1995, and culminated in the release of about 200 kits in 2000. The system used a 32-bit MC68332 microcontroller from Motorola, hence the name. A steep learning curve is believed to have prevented the system from gaining wider acceptance.

The two engineers de..................[:=> Show Contents <=:]



List of mechanical Seminar topics4


Posted by: computer science crazy
Created at: Saturday 20th of September 2008 11:52:04 AM
Last Edited Or Replied at :Friday 01st of January 2016 04:32:59 AM
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ntophoresis
Perpetual Motion Machines
Advanced Cooling Systems
Hydrogen Production using Nuclear Energy
Modern Centrifugal Compressors
Pneumatics Control Systems
The Engineering Research Role in Environmental Noise Control
Micro- and Nano-Mechanics of Surface Contact Plasticity
Air Powered Cars
Fuel Energizer
MegaSquirt
Highly Productive And Reconfigurable Manufacturing System(Hiparms)
Aerodynamics
Regenerative brake
Space Shuttles And Its Advancements
Condenser Bushing
Refined IC Engines
Future Cars
Glass Glue
FADEC - Full Authority Digital Engine Control.
Ultrasonics ..................[:=> Show Contents <=:]



magnetic balance test of transformer


Posted by:
Created at: Monday 15th of October 2012 07:31:58 AM
Last Edited Or Replied at :Tuesday 29th of September 2015 01:10:38 AM
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What is a magnetic balance test of power tra..................[:=> Show Contents <=:]



A Novel Three Phase To Five Phase Transformation Using A Special Connection TF


Posted by: vsavkrishna
Created at: Sunday 01st of January 2012 09:34:54 PM
Last Edited Or Replied at :Thursday 05th of January 2012 11:54:18 PM
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Dear all,

I'm looking for the MATLAB file for the project ..................[:=> Show Contents <=:]



A Novel Three Phase To Five Phase Transformation Using A Special Connection TF


Posted by: vsavkrishna
Created at: Sunday 25th of December 2011 08:57:47 PM
Last Edited Or Replied at :Monday 26th of December 2011 01:04:43 AM
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Hi Everyone

I need the Designed c..................[:=> Show Contents <=:]



Transformerless Inverter for Single-Phase Photovoltaic Systems


Posted by: smart paper boy
Created at: Tuesday 02nd of August 2011 03:41:17 AM
Last Edited Or Replied at :Friday 21st of December 2012 12:04:20 AM
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nsistors (IGBTs) and
has a good trade-off between efficiency, complexity and price
.
Due to its low frequency, the line transformer is large, heavy
and expensive. Technological evolution has made possible the
implementation, within the inverters, of both ground-fault detection
systems and solutions to avoid injecting dc current into
the grid. The transformer can then be eliminated without impacting
system characteristics related to personal safety and grid
Manuscript received September 11, 2006; revised November 1, 2006. This
work was supported in part by the Spanish Ministry of E..................[:=> Show Contents <=:]



detecting internal FAUlTS IN A TRANSFORMER WINDING


Posted by: Wifi
Created at: Wednesday 27th of October 2010 11:35:03 PM
Last Edited Or Replied at :Wednesday 27th of October 2010 11:35:03 PM
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/b]
Due to vibrations initiated by the electromechanical forces at service current and over currents.
Erosion of winding
Erosion of conductor insulation

ADVERSE EFFECTS DUE TO FAULTS
Severe hot-spots
Oil heating
Winding deformation
Damage to clamping structure
Core damage
Explosion

MAGNETIC BALANCE TEST
Carried out on three phase transformers
Energize one of the phases with a voltage lower than rated voltage
Keeping all the other phases open-circuit
Compare voltage of this winding with open circuited winding
A fault in the winding can be detected by the ..................[:=> Show Contents <=:]



A new high-efficiency single-phase transformerless PV inverter topology


Posted by: project report helper
Created at: Saturday 09th of October 2010 02:53:05 AM
Last Edited Or Replied at :Saturday 09th of October 2010 02:53:05 AM
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bas, Member, IEEE


ABSTRACT:

There is a strong trend in the photovoltaic (PV) inverter technology to use transformer less topologies in order to acquire higher efficiencies combining with very low ground leakage current. In this paper a new topology, based on the H Bridge with a new AC bypass circuit consisting in a diode rectifier and a switch with clamping to the DC midpoint is proposed. The topology is simulated and experimentally validated and a comparison with other existing topologies is performed. High conversion efficiency and low leakage current is demonstrated.

I..................[:=> Show Contents <=:]



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