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 are the stresses in circuit breakers ?
what is the size of ht cable of 33kv ht line and transformers ratings are 1 Mva and 5mva.please send formula also.
What is the difference between single core 2 wire and single core 3 wire system? Which application we are using this? and for What purpose we are using this?
why zero sequence impedance measurement is not applicable for single phase GT
I need a formula to calculate the size of cable as per load but in the terms of length. Please Reply me as i search lot of sites but i did not get the answer.
I want to replace the 3 KW DC motor with AC motor so what should be the rating of AC motor? Details Of DC motor to be changed with AC are - Kw - 3, Vf - 310, If - 0.15, Va - 400, Ia - 13, RPM - 2400
What is d main advantage of using double circuit 3 phase transmission ?
what is the profesional board for electrical engineer what is thepast and during construction for electrical engineering
How to resolve if Diesel generator stop while running ?
what is the difference between changer, converter and transformer?
what are the different sizes of U.G. cable & where these cabl;es are used according to voltage ..
I COMPLITED MY B.TECH AND 10TH CLASS WITH 70%MARKS BUT 12TH CLASS 55%MARKS..CAN I GET INDIAN RAILWAY RECUREMENT EXAMINATION?
Which contains in POLE ASSEMBLY of a 11KV Kirloskar-make SF6 (Model No-FP620A12)? Will u clarify with drawing?
How to convert a two phase power into a three phase power in induction machine?
why connecting surge unit in contactor coil
