Synchronizing AC generators -- Part 2 (strobe light view)

[@joez.2794]

All of these videos I've watched with the spinning "synchroscope" dial - it finally makes sense!

[@MrTuber7117]

I always wondered how, if at all, the utility companies connect themselves to the grid and run in "parallel". This is an awesome scale-model demonstration that makes it clear! Thanks for posting this!

[@bloguetronica]

The sync demonstration with the strobe light was brilliant! Thanks for sharing!

[@gordonbrown2204]

Absolutely fantastic video and demonstration. The way i think about the electrical coupling is a little like pumps and a water system. When both are running at the same speed they are pushing the water (current) out at the same speed. If one slows then the faster one will out power it and pushes water through it to bring it up to speed. This in turn, puts additional demand on the faster-running generator / pump.

[@RODALCO2007]

Excellent demo, thanks for posting.

[@MeepMu]

I like how the strobe light makes the rolling shutter visible

[@myid9876543]

It's at 59.7hz and the camera is likely at 59.97 or 60 or something.

[@BurkeSinclair]

THIS. This video is going to help my apprentices understand "IN-PHASE MONITORING" on automatic transfer switches......as well as paralleling gens. THANK YOU!!!

[@Debraj1978]

Briliant. I had the dark bulb and bright bulb method of synchronization in my eletrical lab. And this demonstration is awesome.

[@ScottBrandt]

Very cool demo physically illustrating a theoretical concept.

[@Bizzon666]

Great video! Not for everyone, but it helped me understand how do power plants connect to voltage that is changing 100 times per second.

[@paulmangwengwe9284]

Brilliant demo. Thanks so much

[@dhadumia]

Awesome!!!!! I can't thank you enough for demonstrating this!! 🙏🙏

[@ecamilot]

Perfect video! The strobe light is wonderful!

[@ravindramagdum3996]

Thank you for this practical demonstration.

[@goatsinker347]

Very awesome demonstration

[@bachtran1577]

fascinating how components within a power grid, especially the generator, work in tandem with each other

[@RiaziMohandesi]

Very useful. Please do it again with higher quality

[@arvinsupetran8844]

Very well explanation about electrically coupled.

[@coriscotupi]

Another great demo. But after both are in sync, the question remains: in a real-world application how can you know that a generator is not working in "motor mode" so to speak, actually drawing from, instead of supplying power from to the grid, say in the case of variable water flow in a hydroelectric power generator? There surely must be such control even after the generator is initially synced to the grid, no?

[@jarosawklimentowski5091]

Very interesting videos. Thank you!

[@sazib8333]

Thank you guys.

[@kalasasi7576]

this is really clarifies my doubt,thank u so much

[@derina.maleek9408]

thank you a lot i suggest repeating that with load to demonstrate droop characteristics

[@barrosinc]

This is amazingly deducational

[@aatirehrarsiddiqui8894]

Top explanation mate 👌

[@deonmomberg3732]

Sync in this video is achieved by one system expending power into the second system. Surely the best way to sync should be to control the speed of the power source of the 'slave' system from the 'master' system by means of phase lock loop.

[@samuelsumbo7693]

thank you, I like it when you say "its bad news'

[@rethnagireeshwar7199]

zero dislike .... very good...

[@BS-eu9do]

Thank you so much It's very informative

[@GeorgeTsiros]

3:47 awww...

[@hernancoronel]

Great video, thank you very much! Now do it again at 4K LOL!

[@Electronzap]

Good info.

[@ZeeBigPapa]

Very informative series. Thanks for the demonstration!

[@jameserswell2161]

Does a slipped pole slip a pair of poles and get back into sync or does it slip and stay out of sync? Also like the vid, thanks!

[@SPeeDKiLL45]

what a great video

[@ronniepirtlejr2606]

You can see each generator slightly trailing behind the other. They each play cat & Mouse with each other. If one slightly moves, the other well follow.

[@joaopaulocoelho5401]

Hi, is it possible for you to share the schematic and BOM of this experimental setup? Realy love your video.

[@GeorgeTsiros]

Are there any devices, triggers or other kinds of provisions that can help with slipping a pole, either by preventing it or by non-destructively disabling the system ?

[@thor7728]

Is it possible to mechanical couple 3 single phase generators together 120° out of phase with each other and driven by 1 big motor to generate 3 phase power?

[@alvieteal4980]

So I’m gonna go on a limb and say so the neons are connected phase to phase of each generator?

[@calvinthedestroyer]

Can you do a video on building phase converters? Like what output can you expect when your turn a 3hp 3phase motor into a generator?

[@polymetric2614]

When slipping a pole, wouldn't that just trip the breaker? If not, why?

[@divyalalraveendran1647]

awesome - any video to visualize the waveforms

[@eepower]

I would be extremely appreciative if you can share with me the components and materials used for this great illustration. Looking forward to to rebuild this concept to my students. Can you plz help us.

[@GeorgeTsiros]

What are the differences between this smol-scale model and the actual-use, big ones? I mean, for the method of synchronization, not how the constructions differ.

[@michael931]

How do they stay synchronized?

[@isettech]

Should have made it clear that the alternators used are not 2 pole fields, but often 10 or 14 pole, which is why it appears the lights are winking much faster than the mechanical speed difference. The synchronization when in sync electrically occurs at 1/2 the number of field poles in the alternators, so depending on the alternator, it would be in sync at 5 or 7 different locations in one mechanical rotation. Diesel generators generally are 4 pole or 6 pole so are in sync electrically at 0 degrees and either 180 degrees for 4 pole or 120 and 270 degrees for 6 pole machines. Due to camera pan not showing the tape and the lights in frame at the same time, I could not tell how many poles your alternators use. Due to the rate of flashing, it appears you have the 14 pole alternators with 7 in sync locations in one revolution.

[@DavidMG99]

👍👍

[@hassam4629]

Can please Describe all the connection through the circuit because took this as my science project in my university

[@jameserswell2161]

That makes me wonder though... cause the generators are in paralle right...?

[@pmaxgen]

Tks for the nice video

[@pepelapew2724]

Can you synchronized 2 gas power generator .

[@nhlanhlambuyazi7536]

I don't understand , they can both be running @60hz but if they start in split second they will be out of phase by a few degrees unless you periodically start and stop the slave generator in order to achieve the matching cycle

[@matiassantander1170]

Ésto cerrará muchas bocas, colocol los canales aquí????

[@NadeemKhan-fx9su]

if we synchronizing 10 alternator. but one of alternator not working so in this condition what is effect on synchronizing process

[@polymetric2614]

It's a bit difficult to understand what you mean - there are a few situations you could be talking about: If the prime mover of one generator was disabled, but excitation current was still being provided to the genhead rotor, the effect would be similar to connecting a permanent magnet brushless DC motor to a constant frequency (non-commutated) power source - the generator would act as a motor, but it wouldn't be able to get up to speed fast enough as to maintain sync with the grid, and it would likely just vibrate. This would cause a near-dead short - the windings would act as an inductor to some extent, but it would still draw far more current than the winding is likely meant to have running through it. If the excitation current wasn't enabled, and the prime mover was not running, it'd be the same situation, but the rotor wouldn't vibrate and it might draw slightly more current. If the prime mover was running, but the excitation current was off, It'd be the same thing. The excitation current is the only thing that counteracts the current from the grid, and without that, there might as well be no rotor there at all.

[@silenttitan3147]

Superb Video!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:)

[@4dirt2racer0]

dam...very interesting

[@mouradmourad4305]

what will happen if you reduce and reduce the speed of one of these generators... cat the system maintain the synchronization?

[@TantalumPolytope]

yes, the generators will try their best to sty in sync by giving each other a slight push/pull until they're in sync

[@انورمجيدحميدفنجانالساعدي]

Awesome, can I get controller diagram

[@naveennavaneethan1124]

thank you a lot,.

[@mitchumsport]

no over-current protection?!

[@Bodragon]

(0:55) - But to me, it looks like the tape is moving forwards, not backwards. >

[@Nathan0A]

I thought the same until I realized the whole setup was spinning anticlockwise from cameras perspective

[@Sevalecan]

Oh, come on. I WANT TO SEE IT SLIP A POLE! I also want to know how quickly your overcurrent detection needs to respond in the case of desynchronization to avoid damaging the equipment... Probably just an 'instant' trip breaker on a very high current, you'd need to catch it before the rotor slipped past 180 degrees with the applied field, I expect? I'm assuming the catastrophic failure will be due to the high torques experienced at this point, once you go past 180 degrees, you'll start to increase torque again, slam the rotor toward the stator field, then as it passes it again, the torque is reversed and you end up with oscillating torque on the motor or generator shaft, yeah, that could tear it apart. So, by catastrophic, I assume you mean mechanical failure for the most part... Though in overcurrent as you're suggesting, that could burn the insulation off the windings as well and destroy that too. I assume the overcurrent is simply caused by the backemf no longer being in sync with the grid, rotated 90 degrees out by putting a 180 degree load angle on the motor or generator would leave just an RL circuit with full grid voltage across it.

[@johnnok7775]

I was always wondering if one could parallel 2 normal generators without them having an epic fight. Might have to try this one lol

[@wyokaiju992]

Ive done so. Two older Onan generators. Tho, i built a sync scope to use along with the sync lights.

[@davem5333]

What about generators driven by a gas engine?

[@jameserswell2161]

Id like to add to Gordon Browns comment: think of the pumps in series not parallel as I originally did.

[@maynardr6]

I think we need a video of you syncing them 180 out of phase. For science!

[@RRRRR7-c7r]

So generators 1000 miles apart will be doing the same thing. I bet theres mechanical applications that this would work or also.

[@dolomighty74]

Look up for synchros and amplidynes