Selling PV or other RE [RE-wrenches]

[Kim Bowker]

<x-flowed>Hello Travis,

Unfortunately there are no inverters that will take a wind generators 
variable output directly. For a grid intertie system you can use the 
Trace SW series inverter with a small bank of batteries in between 
the wind generator and the inverter.

Regardless of the presence of batteries in the system, your inverter 
output must be sized big enough to handle the entire potential load 
flowing through it with some oversizing for safety. In fact since 
wind generator dump loads & fuses are often oversized by 50% for 
safety you are better off using a SW5548 with the Whisper 175 and 
1000 watts of PV. The wind generator would go into its EZ wire center 
and then a fuse before the battery bank. The PV should be on a 
separate circuit although it there is a power center in the system 
you could utilize DC circuits within that box for both generating 
sources.

>Fellow RE-Wrenches
>
>I am wanting to integrate PV and Wind into a model home that we are thinking
>about building.  I'll never be able to sell this place if it doesn't have
>air conditioning so it will be hooked up to the grid.
>
>If my only goal is to sell power back to the grid then I need to forget
>about batteries and go with a  the new Trace Sun Tie (I think that is it).
>There is also some others  battery less inverters  out there but I don't
>know anything about them.   Any suggestions?  Grid Tied and no batteries can
>make a lot sense.   1000 watts of solar actually = 1000 watts of solar and
>the money saved by not having to buy batteries can go towards even more
>solar plus the inverter is whole lot cheaper.   I just hate to loose the
>independence, what I have always considered one of the best things about
>solar, when the batteries go away.
>
>Anyway, I'll probably go with a battery system so the home will have backup
>power plus there are no tax incentives in Missouri anyway.
>
>OK here is my question.  Assuming I use SW4048 I would need to limit the RE
>energy sources to 4000 watts?  The budget won't allow 4000 watts of PV but a
>3000 watt (whisper 175) wind generator is a possibility.  What happens if I
>want to go over 4000 watts in the future?  Would I add a second SW4048?
>Would they need to be separate from each other or could they wired into a
>common DC buss (DC175 or Pulse PC500).  Most of the year the wind generator
>won't be putting out the 3000 watts but I would have to design the
>possibility into the system.
>
>Thanks
>Travis Creswell
>Ozark Solar
>
>
>
>
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Kim Bowker
Dankoff Solar Products, Inc.

    Wholesale distributor of solar-electric equipment
    Manufacturer & distributor of solar water pumps

2810 Industrial Rd.
Santa Fe, NM  87505
(505) 473-3800
FAX  473-3830
E-mail:	  pumps at dankoffsolar.com
http://www.dankoffsolar.com
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Hosted by Home Power magazine: <http://www.homepower.com>

for info contact: <michael.welch at homepower.com>
_________________________________________________________
Enlighten your in-box.         http://www.topica.com/t/15
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