RE: Solar PV ?

["Stewart" <stewart_berry@xxxxxxxxxxxxxx>]

Kevin/Marcus,

Had the chap from Sun Renewable here last week (thanks for the
recommendation Mark and, YES, we did mention your name to Tom) and we're
looking at using Sharp panels and micro-inverters (1 per panel) made by
Enecsys. These micro-inverters fit directly onto the back of each panel and
solve the problem of one shaded panel bringing down the output of the array
and also, as we were worried about the noise generated by a loft mounted
inverter, these will be mounted outside so noise won't be a problem (we
hope!).

The micro-inverters are a recent development so there's no worthwhile
reliability data yet, however, they do come with a 20 year warranty.



regards

Stewart



From: ukha_d@xxxxxxx [mailto:ukha_d@xxxxxxx] On Behalf Of
Marcus Warrington
Sent: 16 May 2011 15:36
To: ukha_d@xxxxxxx
Subject: RE: [ukha_d] Solar PV ?






Kevin,

I think in theory it still does, but you can get panels with built in
bypass
diodes that should mean only those cells (or possibly string of cells)
within the panel that are shaded get affected. I have another installer
coming tonight so I'll be quizzing him a little more about this :)

Marcus

From: ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>
[mailto:ukha_d@xxxxxxx
<mailto:ukha_d%40yahoogroups.com>
] On Behalf
Of Kevin Hawkins
Sent: 14 May 2011 14:15
To: ukha_d@xxxxxxx <mailto:ukha_d%40yahoogroups.com>
Subject: Re: [ukha_d] Solar PV ?

If you had an array of panels but one of them was in shade , perhaps
from a chimney stack , does this same situation occur ? I'm
assuming not as it must be correctable via electronics but just checking...

K

On 13/05/2011 09:06, Marcus Warrington wrote:
> Since I've now read that output of a string of panels is dictated by
the
lowest producing panel, that's means if I have a string of Sharp panels all
producing +10% but the last one produces -5% then its as though all the
panels are at -5%.
> Marcus
>
>
>

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