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Thank you for your excellent explanation.

Really good explanation!!! It took me many days to find one of the best videos😊

✌✌✌✌✌✌✌😍😍😍😍

Great Video.

(alternator stop motion) ruclips.net/video/3S2qYGgSgpM/видео.html

Every home should be supplied by and ungrounded system. Use ground detectors to quickly shunt the system or use lighted fuses within sealed separate compartments so you can monitor and shunt the remaining phases or neutral at the same time. Midpoint delta on premises will give you the high leg plus two phases at the normal 120/240. Use all three phases for your kitchen pumps and garages.

I am trying to produce a product in my garage. The machine I am making which builds my product needs to make 2 welds, preferably at the same time. Do you see a problem making 2 welds at the same time? I am thinking about buying 2 migs OR is it possible to get one mig to make 2 welds? (instead of 2 migs at 30amps, have one set at 60) Everything will be automatic. I'm even making a wire feed system that pulls 2 spools with one beefy motor at the same time.

please tell the hp rating and voltage rating. Also how do you relate that 100W you mentioned to the hp rating?

Dayum hit the wrong button. Once a year, pull brush holder and check brushes, and yes the springs. a good brush set will have a braided wire out of the brush itself, that is often called a 'shunt' larger gens might have brass or metal brush holders but if the brushes have no shunt it is not a good practice. Some large KW D.C. generators have a field winding in series with the load. So whatever current comes off brushes to an external ckt. must go thru a commutating winding.

A lot of people wrongly think that if it has brushes, go brushless. Nope. If you practice good maint. U start geny every few months an actually put a load on it, you are doing 3 good things, making sure engine starts easily, making sure everything is dry an no leaks and knowing gen will be there when u need it.

Hello Marc Garner, I am quite aware of that, thanks, 20 yrs ago I flashed field in sisters VW square-back. started charging right away. BUT maybe you know this. I heard that having a load on gen when slowing down, from running out of gas can/or will cause trouble. Have you ever heard of that?

Pretty good explanation. so the field poles for exciter must have residual magnetic fieild, so i guess tying exciter end to ac output the generator is always properly excited?

Good

That is a great graphic! Any chance that you would be willing to provide some graphics for me to use in my Shipboard power generation and distribution course that I wrote and will teach up here in Homer, Alaska? I'd love to chat with you if you get a chance.

Hey, where did the so-called residual magnetic field came from in the so-called Exciter? Don't tell me the alternator. The alternator had to run to produce power to get the Exciter going so the exciter can get the alternator going so it can excite the exciter so it can get the alternator going. Yea you are something. Cut with all the blah blah blah. I am outta here.

"Prime Mover" Are you referring to some God invisible prime mover?

Byst

Hello Marc, thank you very much for this explanation. How will this detection circuit change in the case of an ungrounded DC system? (where there are only 2 poles, the positive and negative and not 3 phase) Thanks!

Thank you

I cannot understand Please explain briefly

Nice.. thank u ..

All the info I've gotten about alternators is that they create AC energy first which is turned into DC by the rectifier.

how about with three phase connection diagram .pleass ineed it

Please show a 10 kva or 15 kva single phase alternator full rewinding process with diagram and with full service

Thanks Marc

TY

Nice one,well explained,thanks.

A generator does not provide 'residual magnetism.' LOL No such thing. A generator provides current. If a generator needs battery current in order to charge the battery, we have free energy. LOL . If you want to charge a battery you do not draw power from that battery.

where is the capacitor connected(38Microfarad) in this circuit diagram shown. In practical brushless generator , a capacitor is used.

good

To BearNameJoeOnceMore: Please, go and get yourself a job, stop being a useless clown. You are not a comedian, learn to tell jokes. 05/31/16.

hi, how much AC voltage is generated from the stator, before entering the DIODES and voltage REGULATOR?. I own 2 GM delco-remy, AD244 high output 250 amperes,12 volt DC alternators. Running at about 5000 RPM. Please, someone tell me at yosoycalvo@gmail.com.... Thanks, New York, 05/25/16.

I was an electrical generator repair tech. In the army. the training was very poor. Most army generators are 3 phase. each phase is 120ish volts we were told there was 1 primary phase for general use but it was best when possible to distribute the load evenly across the 3. Someone also implied by using 2 phases and ground to output 240v. No one ever explained how but to be fair I never had a need to do so. All the gennies I worked with had 3 stages on the rotor. 1 dc earth magnet genny to provide startup power to stage 2 the exciter and stage 3 the alternator. Could you do a video to explain how a multi phase genny works and how you can get 240v out of 2 120v phases? I learned more from your 15 minute video than I did in 3 months at ait training in the army.

why not include a small earth magnet in the exciter field core so that you are allways garonteed to always have an initial starting field?

hi ineed to contaced you in face book

Wonderful Explanation , Please would you let us know Where does AVR comes into picture ( like UNITROL 1000 from ABB or what it does ) Thanks !!

Commented from the wrong account. Please reply to this comment.

so i think your Egen should be 122.1v

so it would be the phasor sum of Vphase+Vxsync+Vres

dosent your e(gen)=V(t)+V(xsync)+V(res) have to be done vectorally? you cant just add them straight up...you have to take into account what angles they are at on the phasor diagram...right?