Interested to Buy Any Domain ? << Click Here >> for more details...
Answer Posted / santosh kumar verma
PMG is Permanent magnet generator mounted at the end of the alternator shaft. The alternator generally uses a self excited generator and converts its voltage to DC and then applies to Exciter armature winding through AVR. Generated voltage from this exciter fed to Main alternator field after proper rectification (Through rotary bridge rectifier) & alternator get excited, This kind of alternators are named as brushless modern alternators.
A synchronous generator whose AVR is taking its input power from the generator is termed a shunt excited generator. If the generator’s terminal voltage is reduced as is seen with transient voltage dips upon the application of significant block loading or motor starting, the input voltage to the AVR is reduced by the percentage of transient voltage dip. This reduction in input voltage to the AVR reduces its ability to force swift recovery of the generator’s terminal voltage, and may well impact the generator’s ability to start relatively large motor loads.
Meanwhile the PMG is used for stability of Alternator voltage, better regulation to make reliable source.
Please note in such system A complete brushless alternator built with the below combination
PMG + Exciter + Main Alternator
| Is This Answer Correct ? | 14 Yes | 1 No |
Post New Answer View All Answers
What is a dc motor?
can i use 2000/5A Clamp meter to measure HT cable
I am doing apprenticeship training at HT switch yard in NLC. How can i get electrical c license. ??? What r the rules for getting it as an apprentice? ??
The simple way of finding the leakage quantity and % in compressed air distribution system
If one tertiary phase i.e. R,Y or B is earthed of a loaded type tertiary delta connected (Without load)of a power auto transformer, what is its advantage/disadvantage?
apti mainly on logical reasoning, verbal and non-verbal ability (70 percent) and remaining technical. I was in ee but technical had mech ques like on turbines and welding.
please give me all the Alarm .Trip ,Safety Relays & Conditions of UPS Systems mail me on ashokbabunhce@gmail.com
draw the restricted earth fault protection circuit install on power transformer and identify its parameters and draw C/C curve of it
How to design a Unit auxiliary transformer for a power house having a unit of 65 MW and Generating voltage of 11 KV and Secondary voltage of 433V
what is transient voltage?
What is process of anneling transformer core
What is the use for cable entry in control room?
when we gave dc supply to 220v dc motor its rpm is 1200. then we gave 180v. how many rpm of its motor. gave answer with calculation at my ID.... ravizak@ymail.com
How to test lightning Arrester?
what is arc flash and what are the hazards involved
