three battery-based inverters? [RE-wrenches]

Jay Peltz, Peltz Power jay at asis.com
Thu May 1 08:56:07 PDT 2008


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HI Phil

I don't think you can use a autotransformer with the sunny islands  
and have them work the same was as an Outback wood.

jay
On May 1, 2008, at 8:31 AM, Phil Schneider wrote:

>
> Hi Jay,
>
> I’m considering three Sunny Islands, grid-connected, with a  
> generator as
> well.  Desired AC capacity is about 13 kW.  AC coupling with Sunny  
> Boys.
> Possible DC sources in the future.  Web-based functions of Sunny  
> Island are
> desired.
>
> I think I'm going to steer this one down to two Sunny Islands, but  
> for the
> sake of discussion, any reason why an autotransformer couldn't be  
> used in
> the three inverter case to balance the load between the two legs?   
> Thanks
> all.
>
> P.
>
> Phil Schneider
> Creative Energies
> Lander, WY
>
>
>
>
> From: "Jay Peltz, Peltz Power" <jay at asis.com>
> Reply-To: <RE-wrenches at topica.com>
> Date: Thu, 1 May 2008 07:52:24 -0700
> To: <RE-wrenches at topica.com>
> Subject: Re: three battery-based inverters? [RE-wrenches]
>
>
> Hi Phil,
>
> Well it also depends on how much AC inverter output you need.
>
> 3 x XW's are way bigger than 3 outbacks.
>
> jay
>
> peltz power
> On Apr 30, 2008, at 8:46 PM, Phil Schneider wrote:
>
>>
>> Wrenches,
>>
>> In a battery-based system have any of you used three inverters in a
>> 120/240
>> configuration with an autotransformer to help balance the capacity
>> between
>> the two legs?  We've recently considered a couple designs where
>> desired
>> inverter capacity points to three inverters, and four feels pretty
>> excessive.  It seems that XW would be convenient in this case with
>> built in
>> split-phase output from each inverter.  In the past I have pushed
>> for four
>> inverters if budget allows, but I'm interested to know what your
>> experience
>> and thoughts are.
>>
>> P.
>>
>> Phil Schneider
>> Creative Energies
>> Lander, WY
>>
>>
>>
>
>
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