small diesel generator [RE-wrenches]

[Kurt Albershardt]

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--On Thursday, June 17, 2004 4:51 PM -0400 "Tom Lane, Energy Conservation Services" <tom at ecs-solar.com> wrote:
>
> The DC generator feeds all it's power direct through the inverter  AT the
> efficiency of the inverter WHILE  excess  power is  charging the
> batteries  --- the lousy horrible efficiency of battery chargers in inverters
> AND the  horrible efficiency of AC  generators versus the great affiance
> of  DC generators

High frequency multiphase AC alternators can be very efficient (and are what is used in the DC gensets.)  It's the 50/60 Hz synchronous stuff which suffers in comparison, particularly WRT weight and size.

I saw several new high efficiency alternators at PowerGen last year--there should be a few more choices on the market soon, especially with all the progress in inverters.

Wondering if one of those high voltage units could be rectified and used with a string inverter?

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