Alternative to grid tie inverter

 Rather than pay the $$$ for a grid-tie inverter, I wonder if there is an
inverter that does the opposite of most smart inverters.  That is, it
feeds the AC load off of the battery until the battery is low, and then
switches to the AC mains until the battery is again ready to go again.

With this animal, I could run my kegerator in the garage with (mostly)
solar without having to worry about warm beer on cloudy days.  I have
three 50 watt solar panels to use, but I'm certain they won't keep up.

bob

 

   The system you are describing would be hard on batteries, cycling them
perhaps daily and wearing them out in a couple years or so unless they were very
high-end units.  With the little gizmo that Richard P found:
http://www.buyerisland.net/greenpower.htm   Your 150 watts of solar could be put
to good use, and you wouldn't even need the battery.

   Don't forget to do the $ math though...  Depending on your area, the system
you are contemplating would average perhaps one KWh/day; vaguely 10 cents worth
of power per day, $37.00/year.   Since you already have the panels, the inverter
would pay for itself in a mere decade or so if you ignore cost of capital.  If
you had to buy the panels also...forget it!

Vaughn






 

 Cool video with that small inverter... the Eagle schematic wipes
across the screen... I can freeze frame it... cant figger out how to
grab it yet...

 
| Cool video with that small inverter... the Eagle schematic wipes
| across the screen... I can freeze frame it... cant figger out how to
| grab it yet...

Looks like a basic push pull MSW, no low pass filtering or anything. I don't
believe this is what is in the actual device.

Cheers

 
n't believe this is what is in the actual device.
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Especially since its a bridge mode output.... how you gonna put that
into a single ended outlet?? I guess a 250W transformer could be
hidden in the box?