16 May
2006
16 May
'06
10:25 a.m.
On 5/16/2006 at 1:07 PM Sridhar Ayengar wrote:
I don't know if I'd ever use something like
that for a computer. I
suppose it would probably be fine for something like a three-phase
compressor or grinder motor, but I definitely would use a
motor-generator set for a computer. No sense in tempting fate.
I've heard that utility companies really hate the idler-motor kind of phase
converter. Apparently the PF of these things is nothing short of
goshawful.
On the other hand, the home windpower hobbyists(?) will sometimes take
large three-phase induction motors and rework the rotor to use neodynium
permanent magnets. Apparently, the result is an alternator that puts out a
fair amount of power at low RPMs. So maybe there's some grist for
someone's "do-it-yourself" rotary MG converter setup--though I'd hate
to
think about how squirrely the output frequency would get.
Cheers,
Chuck