Using twin tracker with shading

[grandfortune]

Hi all,

ive got a system to do and its SW facing 8mtrs long so has 2x7 panels on there is a chimney on the left side and will shade about four of the panels, is it best to put a twin tracker Inverter on and put 2 strings of seven or is twin trackers for different pitches and roof orientations.?

thanks
grand

 

[dansk]

Hi - Yes something like Power-One 3.6TL would be good (assuming your using 250w panels) - twin MPP is like two inverters in one, so if one string is shaded it wont affect the other one.

 

[Gavin A]

with the power one you can also set the shading function to do a sweep of the voltage range more frequently than the 15 minute period it's set at as standard. I forget exactly what the function is called.

 

[grandfortune]

mmm pv sol doesnt seem to find a power one 3.6TL dual tracker:38:

 

[Gavin A]

3.6 Out-d

 

[grandfortune]

thanks m8

its showing 1 string of 14

im using ET 250w panels, could that be a reason??

thanks for the reply;s guys

 

[SpitfireW'sale]

It should be 1 string of 7 panels into each MPP tracker using ET 250W. You may be able to put the shaded panels onto 1 MPP and the unshaded onto the other, this would reduce the effect of shading as much as possible. Check on PVSol if the inverter would be OK with only 4 panels, I think it might be but would need to check myself.

We stock ET 250W and the Power One, if you would like a quotation for your system please get in touch.

 

[finchy]

Have you considered solar edge ?

 

[grandfortune]

are these a single inverter or idividually ones.?

 

[whinmoor]

With Solar Edge, each panel has its own optimiser. There's also a single "master" inverter.

 

[finchy]

This optimises the maximum output from each panel given the specific conditions of each panel. I would recommend this in situation like this. Plus free online monitoring. Peace of mind for everyone !

 

[grandfortune]

yeah but how much, we are talking a 3.5Kw system for sub 6k

Cheers
grand

 

[finchy]

cant discuss prices but there would be enough meat on the bone for 6K @ 3.5kW

 

[grandfortune]

ill post in the sunlounge

Cheers
Grand

 

[Eco Deal]

Got to be solar edge ,

this is the problem customers want system for nothing but want top quality , solar edge should be selling at around £7500- £8000 for a 4 kwp not £5950 if you want these prices then buy a cheap system that will under perform because of the shading ???