Coaxial generator development

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On Aug 2, 11:17 pm, Ernest Christley wrote:


I need to verify, but I'm fairly certain that the reg/rec I'm using is a
switching type. It turns off the line when the power isn't needed.
Saving the generator from producing heat in both the rotor/stator and
generator.

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Dear Ernest,

I'm afraid that only addresses the power OUTPUT, not generation. So
long as the magnetic field is present and is being cut by the winding
of the coil, a voltage WILL appear across the coil, as will some
residual heating effects. The regulator can isolate this from the
battery but that only addresses the output-side of the equation.

That's a guess of course -- we're using different components. But in
a permanent-magnet type dynamo the Field is always 'on' so to speak --
there is no 'control' as is found in the typical generator-type dynamo
since there is no Field winding. In either case, I think your method
of installation calls for a bit more head-work.

-R.S.Hoover

Fun, goofy thread.

Actually, there is something called an electrically augmented turbocharger.
It's a turbocharger with an electric motor on the shaft connecting the
turbine and compressor ends. The idea is for the electric motor to help the
engine exhaust spin up the turbocharger reducing turbo lag. It's also used
on 2-stroke piston ported diesels to provide enough manifold pressure to
start them and idle.

However, once the engine is running and the exhaust pressure takes over from
the electric motor, there's no reason why the motor can't swich to being a
dynamo/generator. There's plenty of excess energy in the exhaust of an
engine producing 60 - 75% power to generate ample electric power. I once
pitched this idea to the DeltaHawk folks as a way to dump the heavy roots
blower and alternator and get a quick response turbocharger.

Of course, if your engine doesn't need a turbocharger in the first place,
just replace the compressor end with a high RPM alternator.

Fun thinking about this stuff.

Bill D