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

[Carl Ijames]

I need to work up the courage to put together a voltage divider and

plug my sound card into my wall outlet and digitize the generator
ouput error so I can actually measure how bad it is under a heavy
load... Hmmmmm

Use a voltage divider and a woofer, then a microphone to the sound card.
How's that for a new twist on "acoustic isolation"?

 

[Rich Grise]

How about sort of an electrical equivelent:

If a synchonous motor is spinnging a heavy mass, it will naturally
want to keep the frequency constant. If instead of a real synchonous
motor, you used a wound rotor 3 phase motor in its place, you could
drive the rotor field ahead and behind in phase to transfer more
energy in and out of the fly wheel than would naturally happen.

As long as the thread's still here, once someone mentioned the torque
converter from the engine to the generator, I've switched over. ;-)

Albeit, I'd still add another flywheel for the generator output side
of the torque converter.

Cheers!
Rich

 

[Jeff L]

As long as the thread's still here, once someone mentioned the torque
converter from the engine to the generator, I've switched over. ;-)

Albeit, I'd still add another flywheel for the generator output side
of the torque converter.

Cheers!
Rich

How about the obvious and simplest - change or modify the UPS so it is not
so sensitive. I know several of my APC UPS's have a desensitizing switch...

They also have a lot of discrete circuitry, at least the older ones, so
modifying them might be an option. Another thing, if you ever looked at the
typical AC waveform in Urban areas, it does not look like a sine wave, more
like a squashed sine wave with dips, missing areas and sometimes huge
spikes. Low cost lamp dimmers make some huge spikes! The UPS's I have seem
to work fine with that noise, so it may be a zero crossing thing or a
frequency thing that the UPS does not like. I know some of the better UPS
units manuals talk about using them with a generator, in which the generator
may not have a perfect 60Hz.


Also, adding a fluid coupling will waste some of the mechanical energy (the
engine will need to run at a slightly higher RPM), resulting in slightly
increased fuel consumption.