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REGULATION OF 3-PHASE ALTERNATOR BY POTIER AND ASA METHODS


Posted by: smart paper boy
Created at: Friday 29th of July 2011 04:51:34 AM
Last Edited Or Replied at :Friday 29th of July 2011 04:51:34 AM
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THOD):
(All the quantities are in per phase value)
1. Draw the Open Circuit Characteristics (Generated Voltage per phase VS Field Current)
2. Mark the point A at X-axis, which is obtained from short circuit test with full load armature current.
3. From the ZPF test, mark the point B for the field current to the corresponding rated armature current and the rated voltage.
4. Draw the ZPF curve which passing through the point A and B in such a way parallel to the open circuit characteristics curve.
5. Draw the tangent for the OCC curve from the origin (i.e.) air ..................[:=> Show Contents <=:]



armature reaction for synchronous machine ppt


Posted by:
Created at: Sunday 18th of November 2012 10:26:59 AM
Last Edited Or Replied at :Monday 19th of November 2012 01:49:19 AM
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ppt on effect of armature reaction fo..................[:=> Show Contents <=:]



simulated model for reverse power protection of an alternator ppt


Posted by: v nandakumar
Created at: Thursday 23rd of February 2012 12:59:55 PM
Last Edited Or Replied at :Thursday 23rd of February 2012 12:59:55 PM
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can u please get me the ppt of this project.....
simulated model for reverse power protection..................[:=> Show Contents <=:]



automatic voltage regulator for alternator


Posted by: m sufyan
Created at: Tuesday 03rd of January 2012 04:32:58 AM
Last Edited Or Replied at :Friday 12th of October 2012 01:30:00 AM
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what is automatic vo..................[:=> Show Contents <=:]



ALTERNATOR BRUSHLESS TYPE


Posted by: smart paper boy
Created at: Tuesday 02nd of August 2011 06:21:56 AM
Last Edited Or Replied at :Tuesday 02nd of August 2011 06:21:56 AM
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full wave bridge rectifier. The RRA consist of 6 power diodes,3 numbers of cathode stud and 3 numbers of anode stud to convert AC to DC.The DC voltage from RRA is fed to the main field of generator.
Rotating Rectifier Assembly
TERMINAL BOX
The AC outputs are brought out to top side of the machine and are terminated in terminal box. The terminals box also accommodates the generator control unit(GCU).The GCU comprises of an automatic voltage regulator and filter unit.
OPERATING PRINCIPLE
In the separately excited system (PMG) there..................[:=> Show Contents <=:]



SLIP TEST ON 3-PHASE ALTERNATOR


Posted by: smart paper boy
Created at: Friday 29th of July 2011 04:51:52 AM
Last Edited Or Replied at :Friday 29th of July 2011 04:51:52 AM
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f the rotation due to prime mover and the alternator on the motor should be the same.
3. Initially all the switches are kept open.
PROCEDURE:
1. Note down the name plate details of motor and alternator.
2. Connections are made as per the circuit diagram.
3. Give the supply by closing the DPST switch.
4. Using the three point starter, start the motor to run at the synchronous speed by varying the motor field rheostat at the same time check whether the alternator field has been opened or not.
5. Apply 20% to 30% of the rated voltage to the armature of the alternator by adjusting t..................[:=> Show Contents <=:]



REGULATION OF 3-PHASE ALTERNATOR BY POTIER AND ASA METHODS


Posted by: smart paper boy
Created at: Friday 29th of July 2011 04:51:34 AM
Last Edited Or Replied at :Friday 29th of July 2011 04:51:34 AM
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ine DE represents armature leakage reactance drop (IX¬L)
BE represents armature reaction excitation (Ifa)...................[:=> Show Contents <=:]



Harmonic effects on synchronous generators voltage regulation


Posted by: seminar class
Created at: Friday 11th of March 2011 09:50:31 PM
Last Edited Or Replied at :Friday 11th of March 2011 09:50:31 PM
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. The difference between E and V is caused by the armature reaction and the self inductance and resistance of the armature coils.
Case Study
DESCRIPTION OF TEST:
Motor-Generator set is employed as an integral part of Power System Simulator to supply power to various loads during the performance of the test. The speed of the dc motor, the prime mover, can be varied through the use of the field rheostat (0-18 V dc). A three phase alternator is employed as a separately exited synchronous generator.
A calibrated single channel instrument with built-in voltage and current scaling..................[:=> Show Contents <=:]



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