Subject: direct drive alternator
From: Rotary Engine
Date: 2/3/2006, 12:56 PM
To: AA-me




   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



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