Solar Guppy - All Things Solar Forum

It is currently Mon Jan 30, 2023 3:39 am GMT EthGMT

All times are UTC - 5 hours [ DST ]




Post new topic Reply to topic  [ 3 posts ] 
Author Message
 Post subject: shadow effects on pv performance?
PostPosted: Sat Sep 19, 2009 7:45 pm GMT EthGMT 
Offline
Fish Eggs
Fish Eggs

Joined: Wed Apr 08, 2009 12:40 pm GMT EthGMT
Posts: 3
In the process of preparing a site for 10kw grid tied system (micro-fit program in Ontario). To avoid spending many thousands of dollars (or too much of my labour) in brush clearing I'm wondering just how much degradation of performance will occur from the shadow of my wind turbine tower tracking across the array area? Should it be avoided at all costs?

Thanks, this is a start.

Ralph


Top
 Profile  
 
 Post subject: Re: shadow effects on pv performance?
PostPosted: Sun Sep 20, 2009 9:25 pm GMT EthGMT 
Offline
Minnow
Minnow
User avatar

Joined: Fri Oct 17, 2008 8:07 am GMT EthGMT
Posts: 24
I have two power poles that shade across my solar trackers. One is directly to the south of #2 that only goes across during the winter months. I have two 6 panel arrays on each tracker and when the shadow hits it the array output goes to zero while the shadow is crossing it, about a hour. The other pole is to the west and it does the same to two trackers, slowly moving across both arrays late in the afternoon shutting down output from two arrays for about an hour and a half. I have 4 six panel arrays on each charge controller, as long as at least one array is in full sun the MPP will be tracking on it and the lower voltage on the shaded arrays will not contribute much if any to the output of the charge controller. There is not much I can do except just live with the lower output during the shading. If you are installing a new system I would avoid shading at all cost, it will pay off in the long run.

_________________
Tracking the SUN, in case it gets LOST!


Top
 Profile  
 
 Post subject: Re: shadow effects on pv performance?
PostPosted: Mon Sep 21, 2009 6:50 am GMT EstGMT 
Offline
Fish Eggs
Fish Eggs

Joined: Wed Apr 08, 2009 12:40 pm GMT EthGMT
Posts: 3
Thanks bandit
With it being so easy to avoid any shading in my proposed site I shall do so. A little more prep time and money will make sure of that.

Ralph


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 3 posts ] 

All times are UTC - 5 hours [ DST ]


Who is online

Users browsing this forum: No registered users and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
cron
Powered by phpBB © 2000 - 2020 phpBB Group

phpBB SEO

© SGT 2002 - 2020 Solar Guppy