Re: [Emc-users] Single Phase Lathe spindle motor question

[Igor C. <ic...@gm...>]

On Tue, Mar 8, 2011 at 12:45 PM, Jon Elson <el...@pi...> wrote:

> Igor Chudov wrote:
> > Guys, call me stupid, but why can't the OP run his lathe off of that DC
> > spindle motor? All he needs is a rectifier bridge to run it at constant
> > speed.
> >
> >
> Well, a 10 Hp DC motor will draw a LOT of current at start-up.  Yes,
> there is no reason he can't
> do that, and there are DC motor controls that should handle it.  But, it
> is at the upper end of the
> range of available controls.  Myself, I'd BUILD a DC controller, maybe a
> bank of power MOSFETs
> and a home-made inductor.
>
> The DC motor may have much wider speed/torque capabilities that an
> induction motor, too.
>
> Jon


I have a 10 HP motor in my phase converter. It draws 120 amps at startup. So
what, no problem.

i