Re: 3 phase car alternators

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "BRIAN FOLEY" <ka1bbg@xxxxxxxxxxx>

Hi, having rewound a few during 12 years at rebuilding alternators and
starters for special purpose like 300 volts to power a radio to very slow
speed for battery charging stationary diesel. the problem say typical
delcotron alternator, has 14 poles on the rotor, 7 stator winding poles, 3
groups for 3 phase output. total of 21 poles on the stator... 21 only
divisable by 7 or 3 and 14 poles on rotor if you changed this you would also
have to change the stator mechanics to fit. if it worked i would be in the
alternator biz making 120 volt power plants. cul brian f.
----- Original Message -----
From: "Tesla list" <tesla@xxxxxxxxxx>
To: <tesla@xxxxxxxxxx>
Sent: Tuesday, October 17, 2006 10:09 AM
Subject: RE: 3 phase car alternators


> Original poster: "Terry Oxandale" <Toxandale@xxxxxxx>
>
> Could the poles be rewired into fewer parallel circuits (and thereby
> decreasing the number of poles) increasing the current output and
> decreasing the frequency. I've never looked into an alternator, and
> would guess this is a major undertaking.
>
> -----Original Message-----
> From: Tesla list [mailto:tesla@xxxxxxxxxx]
> Sent: Tuesday, October 17, 2006 12:15 AM
> To: tesla@xxxxxxxxxx
> Subject: 3 phase car alternators
>
> Original poster: "S&JY" <youngsters@xxxxxxxxxxxxxxx>
>
> I messed with an alternator many years ago with the idea of using it to
> output AC by removing the internal diodes.  As I remember, there are a
> lot
> of poles in an alternator, so at typical RPMs as used in cars, the AC
> frequency is many hundreds of Hz.  Such an alternator turning at a slow
> enough RPM to output 50 or 60 Hz would have too low a power output to be
> very useful.
>
> --Steve
>
> ----- Original Message -----
> From: "Tesla list" <tesla@xxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Sent: Monday, October 16, 2006 9:21 AM
> Subject: RE: Egg Circuit Revisited - A Solid State Driver
>
>
>   > Original poster: <davep@xxxxxxxx>
>   >
>   > I think Terry's thought of an auot alternator an
>   > intiguing one.  Such like are ruggeder than solid state,
>   > typically, capable of more than the usual 12v, with care,
>   > could be run 'two phase' (alebeit at 120, if
>   > desired.  Approriate choie of drive motor would
>   > allow frequency variation at will.
>   >
>   > Good Luck...
>   >   best
>   >   dwp
>   >
>   >
>   >
>   >
>   >
>
>
>
>
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