170 watts in - 1600 watts out - looped - Very impressive build and video

[Alex81]

Hi Guys,
Am new here my name is Alex and I am from Germany.
Sorry for my English translated the text with Google, because I can not speak English so well.
The generator from Pierre is very impressive, really a great achievement! This generator is almost the same as that of Ingo Köth on Youtube, but you do not know if you already know it, but he uses a universal motor and controls the 32 contacts of the carbon brushes with 16 n Mosfet and 16 p Mosfet opposite to the half from the stator is north and the other south always in a circle so that one has a rotating magnetic field. According to his statement, he has an ou of 16 times, have already experimented with it a little but so far without success, have the carbon brushes with a small dc motor rotate not the rotor and the stator windings attacked because I have no experience with an Arduino , Would like to build the small flywheel generator of Pierre soon but I am not sure if he has wrapped something on the generator, maybe someone knows what he has modified everything?

Regards
Alex

[gotoluc]

Pierre has confirm to me twice now that I have it correct and that all coil slots will end up double coils. So 72 coils in total his 36 slot and it will be 60 coils in my 30 slot.

Luc

To everyone

When I wrote the above post I was thinking of the combined 2 coils in 1 slot (2x30=60). However, the reality is, I have 30 coils in my stator because 1 coil covers 2 slots. So my post was misunderstood by some. Sorry if this confused the already confusing topic.

Francais
Quand j'ai écrit le post ci-dessus je pensais à la combinaison de 2 bobines dans une ouverture (2x30 = 60). Cependant, la réalité est, j'ai 30 bobines dans mon stator, car 1 bobine fournit  2 ouvertures. Donc, mon message a été mal compris par certains. Désolé si cela a troublé le sujet déjà confus .

[Jeg]

reducing ON duty cycle to both north and south poles as they approach and leave the rotor, would mitigate the problem without introducing pole gaps.

L192

Exautly

[TinselKoala]

Really, you are welcome and there is nothing keeping me from making a timing diagram which would make it easier to "reverse engineer". However I do my own work start to (snip)

The first link you provide is great for learning about currently used motors; which is not what this type of system is functionally nor is there any similarity other than being coils of copper in an iron stator.

Did you miss the part about the rotating magnetic field?

It would also be great to learn more about the loss mechanisms you see, especially after once you are able to see where and how the input is working. (snip)

You could start by considering the nearly 250 watts (allegedly) dissipated in the big power resistor. And continue on to consider the massive eddy current losses in the motionless "rotor" and stator cores.

I think I probably have a better idea about "how the input is working" than some others here may have.

[TinselKoala]

Hi L192
That is crystal clear. What i am referring to is the moment when North is followed by the South to the same side of the receiver. That moment is susceptible for high oscillations which will not be corrected by lowering the number of poles.

About timing this is the easy part. It is more difficult to extract the old winding out of a burned car alternator!!!

Jeg, didn't you watch the video I linked above?

You use a cold chisel to cut off the coil wires on _one side only_, flush with the metal of the stator core. Then from the _other side_ where intact loops still exist, you pull the wires out using the loops, while heating the core from inside if necessary to free things up.

The video also shows how the "winding" is done: windings are prepared off the core in "skeins", then are carefully inserted into the core slots.