lesson 11: Generator Excitation System

[@langalethumgobhozi1770]

couldn't explain it better. This video is the best.

[@mstabilito]

Amazing Content

[@Bizzon666]

Exciting video:D Not for everyone, but very helpful for me.

[@Appreciation-Community]

I build DECS for a living for years. Literally never knew what the hell I was actually making. Oh well it pays pretty good.

[@theworldinfootballterms]

Hi, what are DECS?

[@atum7355]

@@theworldinfootballterms Digital Excitation Control System. Much like AC to DC converter with automatic current increase or decrease to the rotor.

[@BaldurKhr]

Please, how can we get the entire video series???

[@faridhuseynli6575]

Thanks for explanation

[@hassanarsalanwarsi]

I'm thankful for the guidance

[@er.nazimalishahtariqi1625]

Very Nice Video Lecture Prof.😊

[@harshkumarpatel5880]

kzbin.info/www/bejne/oIStgH9olpx6rpo

[@IrfanMujawar]

Which book is referred for preparing the video?

[@theoptimist3369]

Outstanding

[@dunialistrik7983]

Nice video

[@verminer7]

How does the AVR adjust the voltage when the excitation is PMG system

[@kyle6094]

The PMG is the power source for the exciter alternator's field windings. Basically, replace the "A.C. IN" and transformer symbol portion of the diagram with the output of the PMG.

[@MrPounal]

what is the maximum volt an current go to the rotor for a 100kw alternator

[@MuhammadYusuf-jf4yh]

kevin pounal please refer to your alternator name plate

[@hayel2015]

Amazing

[@sajeevapadmasiri2147]

Thank you verry much

[@teddysuryadikusuma9307]

Can generator synchronised with 0 MW power output?

[@ashishvitekar3474]

Sir, We don't understand why speed of the Turbine decreases when Electrical load increases on Alternator, please explain briefly with examples

[@kyle6094]

Here is my rudimentary understanding: When electrical loads are added to the generator, the larger current demanded causes the voltage to drop. The exciter senses the decrease in output voltage and increases field current to restore the voltage. As the voltage is being restored at the higher current the magnetic field induced in the stator increases. This larger induced magnetic field in the stator opposes the rotating magnetic field of the generator field and tends to slow it down. Sensing the lower shaft speed, the prime mover's governor controller responds by increasing mechanical torque (e.g. via steam turbine governor valve opening, hydro turbine wicket gate opening, gas turbine fuel valve opening, etc.).

[@Adhithya1002]

Armature Reaction, Read "Alexandra Von Meier: A conceptual Intro to powersystems" for awesome explanation.

[@dubol07]

​@@Adhithya1002fantastic book

[@tongkailu1053]

A question: what is the benefit of converting the control signal (of Field Voltage Regulator) to DC first and then inverting back to AC (by the brushless exciter), instead of applying the AC control signal directly to the diode?

[@Abdullah91amh]

Good question Actually the DC is not inverted to AC, in fact the AC is induced in the exciter. It is a small AC generator with the field and armature windings swapped between the stator and the rotor (since you need to supply the voltage in the rotor).

[@aselawickramasinghe2177]

sir... can you send me soft copys about thermal power plan system. It is very helpful for me because I'm working a coal power plant srilanka...

[@aselawickramasinghe2177]

can you please send me your email.

[@mickuljatheseagull]

When you say VT do you actually mean CT (Current Transformer)?

[@kurii-]

He means voltage transformer (or PT, potential transformer). You're monitoring the voltage, not the current.

[@jamespaterson81]

Alfreda Bridge

[@JohnsonSimon-q1p]

Shanelle Meadows

[@elektrikhatti7028]

thanks

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Treutel Center

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Leonie Plaza

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Leonardo Harbor

[@brentmartinez7663]

May I know what is V.T. in the diagram? Thanks for the video btw. Very informative.

[@freakboynv2000]

Voltage transformer

[@dieudozedscorps7310]

C'est possible, des encien fabricants industriels chinois on était interdit d'utiliser cette technologie

[@kyle6094]

C'est différent en Chine?

[@AnnaLeila-u3e]

Octavia Grove

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Yost Green

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Edmond Turnpike

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Gislason Meadows

[@avnishpurohit2999]

👌👍

[@harshkumarpatel5880]

kzbin.info/www/bejne/oIStgH9olpx6rpo Check it also

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Weber Dam

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Monahan Ranch

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Emerson Court

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Xzavier Island

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Forest Lock

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Kylie Center

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Hodkiewicz Mountains

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Anya Hill

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Miles Rest

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Hane Islands

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Kuhic Parks

[@skmgamer8214]

🙉

[@noellaureta7665]

U6

[@Arshath13]

?

[@JulieHale-p4x]

Brain Trace

[@soloogirl8372]

thanks