Re: 11kw 240vac 60(ish) hz 1 cyl diesel Generator "problem"

On Jul 19, 11:56 pm, James Lerch <jle...@xxxxxxxxxxxxxxxxx
seeds.rr.com> wrote:
On Tue, 17 Jul 2007 05:50:34 -0000, uncle...@xxxxxxxxx wrote:
Someone beat me to it but the first thing that came to mind when
I read your post was a ferroresonant voltage regulator. The only
repairs I've had to make to such units was to replace the capacitor
or capacitors if the regulator has more than one. If you build your
own, I would suggest obtaining high quality caps or to have several
spares on hand. I found a company that manufacturers some
regulators but they only listed a max capacity of 2.5KW. A bit of
searching the surplus market could turn up parts or a whole unit
in your size because a new big one is quite expensive. Besides,
it's more fun to roll your own.

http://www.elect-spec.com/klr_$.htm

Yea, rolling my own is definetly something I enjoy :)

I had this crazy idea for "fixing" the frequency fluctuation.. Build
a voltage regulator that would modulate the Rotor voltage in an
attempt to fudge the zero crossing of the 60hz output. Not sure how
doable it is, but I'm guessing the smartups is measure zero crossing
to zero crossing to figure out frequency. If I can fudge the zero
crossing times I might trick the Smartups to go online :)

Of course, it might be smarter and easier to fudge JUST the power
going to the SmartUPS instead of fooling around with modulating the
Rotor Voltage on the generator head..

I also found out yesterday that once the diesel warms up a little and
the HVAC system stops running while the Fridge is off, the SmartUPS
will come on-line again (Basicly, only when there is a very small - no
load on the generator, which corresponds to very small frequency
wobble)...

On another Wild Tangent (which would make a good Business Name, but I
digress), I keep ponder how much mass I'd have to move inward on the
Flywheel to keep the Flywheel angular velocity a constant between
power strokes under a 10Kw load.. (Something like a centrifical
govenor, but on steroids and if it ever came apart at speed, would be
something interesting to observe from the safe side of a blast door
window..)

--

Something else tickled my brain and floated to the front.
I was talking to a fellow who was having a problem with
damage to his drive system on a rock crusher. The
mechanical shock was breaking gears and couplings
to the electric motor. I suggested a fluid coupling that
was available at the local supply house. It's basically
a self contained torque converter much like the one in
the automatic transmission of an automobile that smooths
out the power pulses from the engine. It may work for
you. These couplings are available in many different
sizes.

http://www.twindisc.com/IndFC.aspx

http://www.rowland2.com/pdfs/fluid.pdf

[8~{} Uncle Monster



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Relevant Pages

  • Re: 11kw 240vac 60(ish) hz 1 cyl diesel Generator "problem"
    ... I read your post was a ferroresonant voltage regulator. ... repairs I've had to make to such units was to replace the capacitor ... attempt to fudge the zero crossing of the 60hz output. ... but I'm guessing the smartups is measure zero crossing ...
    (sci.electronics.design)
  • Re: 11kw 240vac 60(ish) hz 1 cyl diesel Generator "problem"
    ... I read your post was a ferroresonant voltage regulator. ... repairs I've had to make to such units was to replace the capacitor ... attempt to fudge the zero crossing of the 60hz output. ... but I'm guessing the smartups is measure zero crossing ...
    (sci.electronics.design)