Re: phase conversion

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Hydrogen18" <hydrogen18-at-hydrogen18-dot-com> 

what are trying to say? It requires planning?

---eric

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Wednesday, March 31, 2004 10:14 PM
Subject: RE: phase conversion


 > Original poster: "David Thomson" <dave-at-volantis-dot-org>
 >
 > Hi Eric,
 >
 >  > Original poster: "Hydrogen18" <hydrogen18-at-hydrogen18-dot-com>
 >  >
 >  > why not just have a large electric or gas motor run a homemade 3 phase
 >  > alternator? getting the rpm's right for 60 hz might be a bit tricky,
but
 >  > it'd work even if ineffecient.
 >
 > It's a little more complicated than that.  I have already built such a
unit.
 > It's been nearly a year, so I don't remember the details, but it only put
 > out something like 2 volts.  Something has to happen inside the alternator
 > to get the magnetic field built up properly.  Someone told me to put a DC
 > current over one of the legs for a minute or so to kick start the magnetic
 > field, but that didn't work either.
 >
 > Dave
 >
 >
 >  >
 >  > ---eric
 >  > ----- Original Message -----
 >  > From: "Tesla list" <tesla-at-pupman-dot-com>
 >  > To: <tesla-at-pupman-dot-com>
 >  > Sent: Tuesday, March 30, 2004 7:53 PM
 >  > Subject: RE: phase conversion
 >  >
 >  >
 >  >  > Original poster: "David Thomson" <dave-at-volantis-dot-org>
 >  >  >
 >  >  > Hi Matt,
 >  >  >
 >  >  > I've been talking to experts concerning three-phase power for
 >  > some time.
 >  >  > The only way to get true three-phase power is to either buy it from
the
 >  >  > utility company (and learn to continually balance the lines)
 >  > or generate
 >  > it
 >  >  > yourself with a true three-phase generator.
 >  >  >
 >  >  > Phase converters allow you to run a three-phase motor using two of
the
 >  > three
 >  >  > phases.  In all cases, you end up with a silent leg (some call it a
 >  > phantom
 >  >  > leg, it's all the same).  If all you want to do is run a three-phase
 >  > motor,
 >  >  > that's fine, a phase converter will work.
 >  >  >
 >  >  > I've been wanting to generate true three-phase power so I
 >  > could produce a
 >  >  > rotating magnetic field from a stator without a rotor.  I still
haven't
 >  >  > succeeded because I can't afford the expensive three-phase
 >  > power from the
 >  >  > utility company or the expensive three-phase generators.
 >  >  >
 >  >  > Well, I actually purchased three working 100kV three-phase
 >  > generators from
 >  >  > the military for $25 at a military auction.  But the generators were
so
 >  > huge
 >  >  > I needed a flat bed semi to haul them and a pretty hefty
 >  > forklift to move
 >  >  > them.  I ended up abandoning them.
 >  >  >
 >  >  > Dave
 >  >  >
 >
 >
 >


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