Requesting simple thought experiment tried in material world.
I need to make a thin ~5" dia dual rotor hi rpm altn, 12v sys.
Need compact power source, motorcycle driven use.
Not equiped at present to test but seems there's plenty
handy equiped experts here to tease into trying or already have.
All the -thin- disc stators I've seen so far use flatened coils
with an outward and inward radial of wires laid on plane of stator
face. Dual rotor magnets pass a N and S pole to either side of each
coil's raidial leg for additive EMF and of course the reverse
S/N on the coil's opposite leg. This geometry I see makes use of
the N/S facing mags to draw strong flux lines straight thru the
stator as proven to work well in your neato low rpm wind systems.
Further options I see are various core materials and methods
to aid flux lines to concentrate or fully cross thru stator
yet not heat up with eddies. Many coils can be overlapped for
multiple phases and uses space otherwise wasted in coil centers.
I see that routing the non active inner and outer diameter coil
legs takes mechanical art work skill plus adds resistence :-(
Wondering if another geometry would work as well, worse or better.
Thought is to wrap a coil around a thin flat non conductive core,
so inward and outward legs are lined up thru the thiness of the
core plate. If dual rotors were passing homopoles facing each
other across this band of wires, wouldn't it be like passing a pole
along a wire wrapped nail, pushing current the same way around?
Windings would be laid down flat one wire next to each other
kinda like comuter buss cables for a flat band on each stator
face. Wouldn't this eliminate most of the non producitve
cross over legs of flat coils and allow for heavier wire yet
closer air gap? I assume a second layer of wire is workable
if more votage was sought and still preserve design features.
About my limits of reality understanding here.
Consecutive bands of coils could be spaced to make
it more multi phase efficient. A coil could be fanned out a
bit toward rim to match better the wedge shaped rotor poles,
if that matters?
Pondering about the N/N, S/S facing mag flux lines, especially
since these bands of coils each form a slot shaped torid with
current which would draw flux lines thru their centers which
would be alinged as the plane of the washer shaped core...
would flux just be repelled before much of it hit the wires?
or
would they concetrate more by faning out in ring patterns?
or
would lines make a U turn flux circuit into the core and back
out to its mates on same rotor?
or
would flux cross thru core in a dogleg to oppostie rotor's poles?
or
would a ferric or laminated core force flux paths into anything
useful out of the above paths?
My image is opposing flux lines passing thru flat layers of coil
to splash apart at core's mid line returning out to opposite mates
poles that are alinging flux thru next phase coil band, yea/nea?
I'm thinking insulator/air core in my case d/t the hi rpms?
So could someone wrap a few turns around a big cardborad washer
and swosh [safe to handle] same pole magnets oppostite it with a
meter on and then with same coil laid open in flat shape, N / S
poles over opposite legs, as horseshoe type might. Oh sure put
some iron in the coils, I want hint towards the better way.
Steve hobot, Shiver
