If we plan on making a toothed wheel with inductive pickup part of
the design then the flywheel style alternator will need to go onto the
opposite end of the shaft. The magnetic field of the alternator will
interfere with the timing pickup. It looks like Renesis has the
toothed wheel behind the pulley.
The DIY wind power generators I have seen are very close and are
called "axial flux"
The coils are turned were they look like a bunch of 'O's making
petals to a flower.
The places for the axial flux alternator:
Prop flange
prop rpm
part of the split PSU and still in design phase
moment is large
between the planet cage and fly wheel
engine rpm
part of the split PSU and still in design phase
moment is large - ~16"
Pulley side
Move toothed wheel to flywheel - minimal moment change
Could be part of an accessory case design
moment
--
Blake C. Lewis
What do you do about the eddy currents in the aluminum? There is heat
and resistance to power in this housing. I ask because I have designed
motors with aluminum housings. A proff of this power is to place a
plate of aluminum on a series of "toothpicks" for bearings or "wheels".
Rapidly pass a neodymium magnet over it and the aluminum will move. In
a motor or generator that energy develops heat and drag. Does this
design address that?
Rick Irwin
Rick,
I haven't designed electric motors before. I am assuming that you
are referring to the moving magnets as opposed to a moving stator.
A prop flange design would be a way to minimize this problem, being
that location has the least amount of stationary metal.
I think that the RevMaster and the Harley radial designs both have
aluminum housings.
How significant do you think that the heat and drag is in the
efficiency of the alternator over a conventional automotive design? Do
you think that the loss is more or less than that due to belt loading
and friction?
--
Blake C. Lewis
The Rotary Engine NewsLetter. Powered by Linux.
ACRE NL web site.
http://www.rotaryeng.net
Copyright 1998-2005 All world wide rights reserved.