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jim beam jim beam is offline
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Default Genset voltage reg: capacitor vs. AVR

On 02/17/2013 06:57 AM, Robert wrote:
On Feb 17, 8:49 am, "Existential Angst" wrote:
"Pete S" wrote in message

...

I don't understand your question.
If you mean "capacitors" when you say "caps", I don't know how they would
deal with output voltage regulation in any meaningful way.


Ditto. ergo my Q. I guess they must in some fashion, just like you balance
rpc's with caps.

What kind, model and serial number of genset do you have that currently
has no voltage regulation built in to it?


http://www.generatorsales.com/order/...Generator.asp?...
modified for tri-fuel.

It is regulated, just not to 1 or 2%, a swing of 230 to 250 V, from 50+ amps
down to zero amps.
If you at mid-load it's 240 V, that's +/-10V, which is not terrible, but
it's not 1% either.

Assume no electrical-type regulation at all. There is something between the
generator itself and the gas engine that ups fuel flow with load,
maintaining a semi-constant voltage. An AVR sharpens this up.

I don't quite understand how this works, and part of the intent of Q was to
shed some light on this.

I also figgered that if the feedback between generator and engine was good
enough, AVR wouldn't be needed.
So basically I"m curious about the design of these things.
--
EA

Pete Stanaitis
----------------


I thought that it was a possibly that you had heard
of a "capacitor regulator' that I haven't, after 35
years as an electronics design engineer. So I
googled the subject and was unable to come up
with a single circuit/instance where a capacitive
system was used as a regulator....


it's possible they're being used for power factor correction rather than
regulation. pfc gets to be important with some reactive loads.



I have the background to comment on the subject,
so if you will provide a website that comments
on how a capacitor or "capacitive circuit" can
regulate the output of a genset, I will study it
and give you an opinion, which, obviously you can
accept or reject....

I don't post this to insult you, but I really don't
see what you are asking ..



--
fact check required