alt.energy.renewable

On Mon, 03 Sep 2007 18:22:38 +0000, philkryder wrote:
> On Sep 3, 10:35 am, "Duane C. Johnson" wrote:
>> Rich Grise wrote:
>>
>> > What does "unwinding" mean, exactly,
>> > in this context?
>>
>> Windings breaking apart due to
>> centrifugal force at high RPMs.
>
> interesting - are they wound on a different axis?
> Why are they immune to "centrifugal force"

I'd be guessing here. I'm with you on the "howcome they
can't spin at higher RPM"? question, and I'm thinking
that if you belted a generator high enough to charge at
idle, then at cruising speed the generator would fly apart,
or there's some other electrical issue that makes it
unfeasible, which is the other possible meaning of "unwinding"
in that post. To unwind a coil, you'd have to spin it on its
own axis, which isn't the way any of the coils in a generator
OR alternator are spinning, hence my confusion. And I've heard
of integrators "winding up" in PID control loops, so that's
confusor #3 or so. ;-)

Thanks,
Rich