True DC generator idea. Need help to solve a problem

[Low-Q]

I have drawn a model of what I could think of as a true DC generator. All generators today are AC either internally with DC output, or both AC internally and output. I want to make a generator that produce pure DC current. No alternating magnetic fields, only a uniform and constant magnetic field which rotates around some coils. I can see only one big problem. In the drawing below, there will be a flux jump between A and B and therefor cross the windings in the green area between A and B. This flux jump will counteract the flux which is crossing the coil at the pink part. I want the flux to cross the pink part only. I have thought of a guide which is leading the jumping flux away from the green part of the coil, and direct it directly to the other side of the coil. The problem now, is that I cannot find a way to do this. No matter what I try, the jumping flux will some how cross the coils where I do not what them to cross...

Please look at the drawing below and ask if there is something I havent explained or visualized good enough in the drawing.

Br.

Vidar

[FatBird]

ALL Pre 1955 US cars had REAL DC Generators with a Commutator and Brushes.

Ebay has HUNDREDS of them for sale.  Why reinvent the wheel?

Cheers

[Low-Q]

ALL Pre 1955 US cars had REAL DC Generators with a Commutator and Brushes.

Ebay has HUNDREDS of them for sale.  Why reinvent the wheel?

Cheers

As I said, all generators are initially an AC generators. The coils are always providing AC, but in a conventional DC generator, the commetators and the stationaty brushes will rectify this AC into DC. I want to make a brushless DC generator wich operates with DC both internal and external.

Vidar

[Low-Q]

Hi,

I think I have solved the problem. The next drawing is now quite different. After a few hours of thinking what might go wrong, I have concluded, this far, with the following:

The magnetic flux leaves point A (From the North iron disc) and crosses the coil B windings inside the iron guide, and exits the coil B center to follow the iron bridge C over to the other side. The flux enters the coil D in center, and must cross the windings through coil D in order continue along the iron guide down to the iron disc at point E.

The occouring flux jump which will occour between the iron guides will follow the iron bridge directly and contribute to charge the coils instead of counterforce them.

Now this is a brushless generator which delivers pure DC with no ripple (?)

I wonder what will happen if we power the coils with DC and make an electromagnet out of them. Will the magnet disc start spinning? Further, what will happen if the coils are replaced with permanent magnets???

[petersone]

Hi Low-Q
Unless I'm misunderstanding it,there is no change in the flux,which is needed to generate,as flux cannot continually increase,or decrease forever,ac,or at least rippled dc must result.
I reserve the right to be totally wrong.
peter