Hello to All,


I do have to disagree with some comments here...as I agree with others.

...
Image did not show in quote. See Ufo's  original post.

Cheers

Ufopolitics

Hi Ufo,
In your image, graph of induction vs time, by induction do you refer to generated voltage in the conductors? I suspect so. Here is an image showing actual waveform. Also a link to the thread where I found it. You may find this interesting/helpful.

https://overunity.com/14020/parallel-core-generator/

bi

Hello  to  all,


Hello Bistander, and thanks for sharing your graphic by Naudin, I will check on that link later on.


Yesterday I've spent the whole day, till late last night, reading the WHOLE 94 Pages from P. Cotnoir moderated board...amazing work done there by so many replicators, in particular by L192 as by Moderator Gotoluc...


I got an image from there, related to this "kind" of confusion related to Magnetic Fields Polarization versus Coils Induction...it says it all in just a couple of images.


Like Pierre said, so many times there...Please, concentrate how a typical rotary Generator WORKS!!!...Imagine the Rotational Fields...

As from there you will get all your answers...your solutions, and so "the works".




Regards




Ufopolitics

There is one more optional topology that has a higher tangential induction factor than the image on the right, see attached.

Regards,
Pm

Thanks. Can you explain 'tangential' induction?
bi

Hello  to  all,


Hello Bistander, and thanks for sharing your graphic by Naudin, I will check on that link later on.


Yesterday I've spent the whole day, till late last night, reading the WHOLE 94 Pages from P. Cotnoir moderated board...amazing work done there by so many replicators, in particular by L192 as by Moderator Gotoluc...


I got an image from there, related to this "kind" of confusion related to Magnetic Fields Polarization versus Coils Induction...it says it all in just a couple of images.


Like Pierre said, so many times there...Please, concentrate how a typical rotary Generator WORKS!!!...Imagine the Rotational Fields...

As from there you will get all your answers...your solutions, and so "the works".




Regards




Ufopolitics

Hi Ufo,
Your graphic agrees with Naudin's example on the left side of the image which I posted except having greater interpolar distance, doesn't it?
bi

edit:
Looking at it some more, maybe not. I'd like to see the topology. Can you provide a link to your source, Ufo? Thanks.

2nd edit:
OK. Thinking further on it, I think Naudin's signal train is generated from all N poles passing the coil and Ufo's graphic is N, S, N, S ....

So, is this with the magnet moving through the center of the coil?
bi

The magnet moves left-to-right or right-to-left at a right angle to the center line of the induction coil.

Regards,
Pm

So motion is not in the direction of the arrow? But perpendicular to the arrow?
bi

Yes, that is correct.  I should have changed that arrow and showed the proper direction on the graphic. 

The advantage of this topology over what Naudin showed is the larger ratio of the areas above and below the zero reference line and in these examples, the positive and negative areas respectively.

Regards,
Pm

I don't see anything new or extraordinary in Holcomb setup.
I will put this into points.


Device construction and operation.

1.In the  picture "setup" middle part- it is regular 4 pole stator from squirrel cage 3 phase motor. It might be double winding, it is hard to see. I assume in that stator windings there are induced  output currents from that device.  That kind of winding is called "distributed". Inside , in the place of rotor, we see mechanically locked slotted iron core with concentrated windings, 16 of them. Outside we see another stator core , also with concentrated windings, 16 of them.


2. The principle of operation  is to energize  simultanously inner and outer concentrated coils, by pairs, then next pair, ans so on- to create rotating magnetic field vector. This rotating magnetic field vector is cutting middle stator  coils from 3 phase motor, and induces EMF in them. This rotating magnetic field vector is created by control circuit that is switching power to the inner/outer coil pairs. Energizing of inner/outer coil pairs in this particular build needs to be done in 4 pole  way.
Induced EMF=B x L x v x sin (alpha)   , B- intensity of magnetic field created by pair of inner/outer coils , L- summary active length of middle stator  coils , v- speed of magnetic vector rotation.


3.On the picture "lock screws" you could see that inner core shaft is locked with a lock screws to the frame . I bet that inner core is custom cut from regular squirrel cage rotor. That gives me a clue that there may be some torque  on that inner core during operation.


My thoughts.


1. The same kind of rotating "DC" magnetic vector  we can get without such sophisphicated switching technique, simply by use of balanced 3 phase signals ( 120 deg out of phase).  Tesla did it over  2 centuries ago.  Some people on this forum still can't understand that by combining 3 balanced sinusoidal signals  with the coils separated 120 deg on the stator circumference- as result we will get a rotating constant value magnetic vector,  some say rotating "DC magnetic field". 3 x AC magnetic field IN = 1 DC  rotating magnetic field  OUT. Magic, isn't it? 


2. Holcomb device looks the same like typical  permanent magnet generators people do for wind projects. They modify  regular 3 phase squirrel cage motor by inserting permanent magnets on the rotor.  Magnets are positioned on the rotor in a slotted way to minimise magnetic "drag" when magnets are facing iron poles. The only difference is that in such PM generators rotors are physically rotated by wind. In Holcomb device, there is no mechanical rotation of the rotor, but switching coil pairs to create rotation of "virtual permanent magnets". In both cases there is energy input- in PM generators  it is mechanical energy to turn the rotor with permanent magnets, in Holcomb's there is used electrical energy to energize and switch coil pairs to create rotating PM vector.


3. Holcomb device resembles "locking rotor"  regime of 3 phase motor.  Sometimes electricians describe AC motors as "rotating transformer". If you lock shaft of 3 phase squirrel cage motor and switch on 3 phase current, rotating magnetic field will induce huge EMF and currents in the rotor  aluminium "cage coils", according to exactly the same formula E=B x L x v x sin (alpha). Better do such a test for a short time, othervise high temperature generated by rotor cage coils will burn stator windings. If instead of squirrel cage AC motor we would use  a slip ring AC motor with wound rotor- then when we energize  that motor with locked shaft we would utilise  induced EMF in locked rotor coils to external load. But this would be just normal transformer work, no OU there.


Given all above similiarities, I don't see why and from what kind of magic Holcomb device would give more energy out than he puts in.
I don't see any mechanism of energy gain.


Cheers,
Pix