Making an asynchronous generator

[@johankriel7612]

Great video. Well explained. This give me confidence to build my own generator as we are currently struggling with very bad power interruptions in South Africa. Thanks for posting the video!

[@theoldbigmoose]

Where this makes sense is to heat your home with the waste heat (water heat exchanger-basically put the radiator after your furnace blower) and while the engine is running pump power back into the grid. The theory of co-generation!

[@rdd13r]

This is very competent - thank you for the video and the explanation! Super practical and indeed elegantly simple on an active grid. I can share a similar microhydro experience.

[@wow1022]

needs a cap bank to supply the asynchronous generator with VARs otherwise you'll have a poor power factor which could lead to voltage issues

[@SteveWrightNZ]

Interesting. Isn't there some chance of closing that breaker 180 degrees out of phase? I suppose the "generator" isn't developing any voltage until it's excited by the grid. What is the situation with voltage regulation when the grid is lost?

[@rickitikkitavi4255]

What you going to do with the old alternator..I would love to have it for learning

[@vagnerfischer9107]

Very Nice this Engineering concept in reality!

[@mrstratau6513]

turn the music up louder, stand further away from the mic & shake the camera more

[@skeetersaurus6249]

Interesting. It seems a solid-state governor would be best in this application, to facilitate constant harmonization with the grid...being as the grid can vary quite-a-bit over 24-hours (at least in the U.S.).

[@badduck2129]

This is by far the best way to sell power back or help your power bill out for small plant during peak use but only for short burst because fuel is much more expensive than electricity

[@jmarkwwalker]

The engine will run on biogas

[@f-j-Services]

Well a 2mw genset can consume 17 gal/hr and electricity cost at 8-12c a kw......

[@ericeric4903]

@@tripplefives1402 HVO ?

[@vasifbabasov794]

very very good👏👏👏👏

[@Pir8Gaming361]

Video is blurred at some points that you are showing.

[@jesper87dk]

The early wind turbines we had in Denmark used this method of exciting the generator from the grid. One thing I wonder is, how come that when engine stops running on fuel, the meter only goes backwards for short time ? Is it some in rush load the engine creates on the grid and then when it spinning at the 1500 minus slip speed it draws less power from grid like so small power the meter only spin very slow ?

[@jmarkwwalker]

It's a feature of the meter. Before this feature was added, people would re-wire the meter to make it go backwards which would reduce the amount of electricity they had consumed, thus reducing their electricity bill.

[@kanapki4368]

Don't you need capacitors to induce a magnetic field in the motor?

[@roadiesgarage3816]

Not if its tied to 3 phase mains.

[@arndtvollmann]

​@@roadiesgarage3816 Which makes this setup useless as it cannot generate power when mains power is lost.

[@onlooker251]

Where is your G59 protection?

[@amadeoortiz]

Can you share us the wiring diagram please, Did you connect a capacitor array on it?

[@ericeric4903]

il semblerait que non , seul le réseau impose la fréquence de synchronisme à la génératrice

[@gnquince]

Hey please tell me that, should I give initial supply to stator for generator action in induction machine??

[@jmarkwwalker]

If you have appropriately sized breakers and the direction of rotation correct, it doesn't matter. If you power the motor before the engine, if the motor is strong enough it will start the engine.

[@maynardr6]

When the grid is powering the generator, does the fuel tank refill with diesel?

[@theq4602]

No. Just no. You honestly should learn how those work.

[@nicovmods]

i guess you couldn't recognise sarcasm if it hit you in the face :D edit: typo

[@ceerodrigue1970]

Lol.

[@cyberlord64]

@@theq4602 r/whoooosh

[@jiangli6498]

Back in the day, we once produced a prototype that had a similar setup in the basement of our shop. One of our guys accidentally left the power switch on for the weekend. The tank overflowed. By Monday, the whole basement was filled with diesel. We had it removed, but the smell of diesel still lingered for several months.

[@hydrodynamicenergy]

Were is capacitors?

[@hydrodynamicenergy]

You need capacitors, Because the motor will overheat and will burn

[@metalmicky]

Nice music

[@ericeric4903]

Hello , Very instructive video, congratulations, Would it be possible to operate your system outside the electricity network? With capacitor bank? Would it be possible to operate the system with the installation of a 12 volt inverter 220 v pure sine and a battery? Thank you

[@seanstrickland551]

Yes but using a capacitor bank I believe would be tricky as changing the load also causes changes to the frequency and voltage in this configuration. Using a sine wave inverter would probably be more effective to control the power output.

[@ericeric4903]

@@seanstrickland551 , Hello , thank you for your answer, I made a mistake, I was talking about a 400 volt three-phase inverter. I was thinking of connecting a three-phase inverter like a frequency converter 11 kws input 220 volts output 3 phase 380 volts preset to 50 hzs, powered from a simple inverter 12 volts 220 volts on battery. If I start the 11 kw frequency regulator on a small three-phase asynchronous motor, so that the setting is correct. And then I couple the generator to the system. I think that the frequency of 50 Hz would be imposed. But I'm afraid to burn out the inverter. What do you think ? Sorry my English is faulty. Best regards

[@brettgarvey]

Get in there!

[@mccleary05]

of course it's possible just need 33mfd per horsepower per phase.... Will spin itself off the grid and generate at the same time... it requires nothing to grid sincronize itself.... p.s. cos phi = 1, and not .047

[@frankolson4158]

Can you expand on this?

[@fernandomotoholic1417]

hOW ABOUT MAKING IT A PORTABLE 3 PHASE GENERATOR WITHOUT THE GRID PRESENT? MAYBE WITH CAPACITORS TO KEEP THE FIELD GOING?is it possible?

[@badduck2129]

It can be done however its not real stable.

[@jmarkwwalker]

Yes, capacitors can be used to make a stand-alone induction generator. The military use this type of generator because it is more robust and they are far better (than synchronous generators) at starting large motors

[@fbrown41707]

@@jmarkwwalker i know this is old but, how do they handle in rush currents? Also for the military to use them they must have good voltage stability, how do they acheive this?

[@al9094]

I don't see the point . if you had a generator why do all that ? Want to sell the one you took off ?

[@badduck2129]

You do this to sell power back on the grid this method is the safest and most reliable way to do it. Most power company's in the US will not allow you to have a generator like stand alone to be grid tie

[@jmarkwwalker]

The next step is to convert the engine to run on biogas. This then allows you to push electricity on to the grid (save you money if it's on your side of the meter) without the need for a £2000 synchronising controller (plus electronic governor and AVR).

[@SomeTechGuy666]

@@jmarkwwalker Thanks for the demonstration. I don't understand the difference between the generator you took off and the generator (motor) you put on. Aren't they both induction machines ? Why did the old generator need a more sophisticated synchronizing controller ? Was the old generator a permanent magnet synchronous generator ? I'm guessing it was a 4 pole permanent magnet brushless "exciter", ie rotor and connecting it to the grid was difficult because it had to be precisely synchronized, versus an induction motor, which does not need to be synchronized nearly as closely.

[@brianeustace4175]

Are you Vic Reeves?

[@jmarkwwalker]

I don't know what point you're trying to make there

[@computerman200]

put some caps on it. then it will self excite.

[@badduck2129]

Awsome

[@Zonfeair]

Why do you have that horrible music in the background? I can hardly hear what you are saying.