[RE-wrenches] mix-n-match Unisolar

Jason Lombard openhandsolar at gmail.com
Fri Oct 31 08:54:37 PDT 2008


You are correct and they are not. The entire string or array will drop the
lowest performing panel and seriously detain performance.

On Thu, Oct 30, 2008 at 2:29 PM, Geoff Greenfield <geoff at third-sun.com>wrote:

> I thought I knew the answer to this one, but wanted to run it by the list.
>
>
>
> We are responding to a bid where the electrical engineer has designed a
> system with different sized Uni-solar laminates in some series strings
> paralelled with consistant full size strings.  (this was done to work around
> skylights etc).
>
>
>
> We suggested that this was a poor design and will lead to "least common
> denomenator" performance, exacerbated by MPPT confusion.  The EE responded
> that "the bypass diodes allow for this".
>
>
>
> Any experience with this in practice?
>
> For a brighter energy future,
>
> Geoff Greenfield
> Founder and CEO
> *Third Sun Solar & Wind Power Ltd.
> *340 West State Street, Unit 25
> Athens, OH 45701
>
> 740.597.3111     Fax 740.597.1548
> www.Third-Sun.com
>
> *Clean Energy - Expertly Installed
> *
>
>
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-- 
Jason Lombard
Open Hand Solar LLC.
HC74 Box13
Pecos, NM. 87552
505 795 8646
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