On Thu, 20 Mar 2008 01:31:10 +0000, Larry wrote:

Wayne.B wrote in
:

On Wed, 19 Mar 2008 13:52:38 +0000, Larry wrote:

A quiet cabinet genset will easily fit where the monster batteries are
corroding away as I type. Next makes one you can hardly hear run that
will put out 8KW for a little oil.

Can you provide a URL for one of those ?



http://www.nextgenerationpower.com/

http://www.soundmarinediesel.com/generators.html

http://www.yellowbot.com/next-genera...-jacksonville-
fl.html

They run slower than 3600 RPM because they use a belt drive system to
increase the RPM from the Kubota running its favorite speed of 2800 RPM.

Having owned, now, two Honda electronic gensets, I think it's way past
time someone engineered a marine electronic generator set that operates
the same way. The frequency of these Next generators are still
dependent on engine speed, though slower. The electronic generators,
this is not so. The small electronic generators get their power from
tiny packages by running FASTER than the speed of directly coupled
gensets. The larger models in metal cases like my EU3000is run much
slower than those speeds, making them much quieter in operation, the
computer speeding them up only during heavy loads. A marine model would
operate similarly, saving noise and, much more importantly now, fuel.

A very slow turning diesel electronic genset would be very quiet,
indeed. It would also be tiny in comparison to the old 60 Hz monsters
because the actual alternator is a very high frequency, multiphase unit
that looks exactly like the magnets mounted on the flywheel with an
internal stator on an outboard motor. High voltage alternators keep
down the huge coils used to create 60 Hz on huge cores necessary to go
so low in frequency. That's no longer necessary, with the advances in
electronic power generation.

Next generators are nice, but still old tractor technology in a small
package. It's time to move on into the 21st Century, even for
sailboats.


Yanmar now makes a KMG65E generator that fits between the 3 and 4
cylinder engines (J type, I think) and gearbox and output 230 VAC @ 13
amps continuous.

I believe they are the type you describe above as the "generator"
output feeds a Box of some sort that in turn feeds the mains. There is
an external control head that seems to turn things on and off.

I think the 21st century has arrived, at least in Japan.


Bruce-in-Bangkok
(correct email address for reply)