Nice! Thank's Butch. Knock on wood, my panels seem fine so far. Just need to do something about those pesky trees (-:
Announcement
Collapse
No announcement yet.
LG Panels Warranty question
Collapse
X
-
-
Originally posted by Scott Sousa View PostAn IV curve tracer is a specific device. all PV installers and maintenance
companies should have one. These are expensive for a homeowner to buy. Not it DIY tool.
The IV curve tracer graphs the Voltage VS current capabilities of a solar module and will indicate the
Maximum power same as the MPPT in an inverter.
If there is a bad cell, diode or other it will show up on the graph. The tracer can also build an IV curve for a
string of modules in series as long as there are no optimizers. You can test an entire string this way.
I can set up such measurements? Since sun can vary a lot, comparing several modules under strong sun
has been the method for sorting out some weak sections here.
The response curves under partial shadowing are interesting, but I can surmise as much just by looking
at the array. Maybe the curve is needed to convince an owner just how devastating shadows are?
Bruce RoeComment
-
Bruce
I do not consider you a DYI since Solar Reviews labels you as a "Solar Fanatic". Ha ha.
You do bring up an interesting point - PV training schools use the IV curve traced to show the effects of partial shading on a module. it is interesting to see how the curve distorts when shade is applied and shifts as the irradiation value changes.
33-CS6P250,1-SMA6000US,SMAwebconn,EgaugeComment
Comment