Question about stator heating.

[poikkis]

I have been reading about the generators stator heating problems

when taking out lots of power to charge batteries.

But what if the genny output power is used to drive resistive load.

(eg.water heating elements what i have planned)

Any idea how the genny stator heating will act & build on those cases. ?

I ´m guessing that stator heating isn´t so big problem anymore, or is it ?

Also wondering that will the huge cooling holes on magnet plate expose the plate

any twisting problem.

I know that the steel is thick here, but the pulling forces are also very high.

Anyway, any info is more than welcome.

Here is one example from this sites 20 foot project.

regards

Poikkis

[scoraigwind]

Holes in the magnet rotors obviously must help but in the end the simplest way to avoid burn out is to limit the current.  Heating loads work at variable voltage, and yest his helps to keep the current down and the alternator efficiency up and reduce the heating of the stator.  

You can try to improve cooling by using all sorts of tactics, but probably the best one is to make the whole alternator a little bigger.  10% bigger alternator means 25% less heat generated, and 10% larger surface to dissipate it over. (same speed, voltage, current, etc)