RE: DC Motor

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "Jim Mora" <jmora@xxxxxxxxxxx>

Hi Adam,
I have a similar scenario, I plan to add filtering just to stiffen the
supply. Fullwave diode, 35amp 600 piv (all electronics fwb-356 cheap), and a
variac. I have a box full of 200v X1000uf caps (I'll bleed them). A choke
(primary of a mot perhaps) insulate the output for more indutance in between
a set than half the capacitance on the output, helps as a multiplier from
way back in my memory.

I'm going to cheat though, I also have a PWM control that will work on most
PM brush type motors @120DC 45 amps tops, I also have spec plates. The leads
coming back will be going through a reactor then a RF filter that has an
inductive though path. What is the max current the motor will draw is the
question. Tip, there is a lot of high power three phase stuff out there that
should work fine with single phase. Maybe someone wants to do the ripple
math and come up with a capacitance recommendation? Not my forte.

Jim Mora

-----Original Message-----
From: Tesla list [mailto:tesla@xxxxxxxxxx]
Sent: Saturday, April 15, 2006 10:58 AM
To: tesla@xxxxxxxxxx
Subject: DC Motor

Original poster: Yurtle Turtle <yurtle_t@xxxxxxxxx>

I inherited the following DC motor:

Mamco 11/17/03
(illegible)-100-124 DI
100 VDC RR M

It's from a 120 vac portable winch. The DC motor looks
almost identical to a 90 v DC treadmill motor I have.
Unfortunately, it didn't come with the PSU. I've
emailed Mamco a while back to see what the voltage
range is, but they're apparently not going to reply.
Does anyone know if I can simply run this motor off of
a BR104 rectifier, or should I filter the output. I've
run it with just rectified ac under no-load, and can
control speed by using an upstream variac. Since the
motor appears to say 100 vdc, will I hurt it but
running it off of straight rectified, or even filtered
AC, without some sort of voltage regulator?

If I use it for an RSG, the duty cycle and load should
be so low that I'm not as concerned. However, I'd like
to build my PSU such that I could use it as a winch if
I decide to do so.

If it needs a filter, I'm afraid I'm out of my league.
I've Googled for filter design and circuits, but most
are way under 100 vdc.

thanks
Adam