Waqasyte Posted July 9, 2021 Share Posted July 9, 2021 I have inverex aerox 1.2kw inverter i have 445w * 2 =890watt of solar input My solar panels are Of good quality the temprature of inverter is about 40C. I get about 400watt max input on the inverter as i increase my load more than 500watt the the solar input decreases to 350watt I don’t understand the problem ,I think its the problem with software . Please help Quote Link to comment Share on other sites More sharing options...
Coulomb Posted July 10, 2021 Share Posted July 10, 2021 (edited) I don't know the Inverex models well, or the lower power models. What it sounds like to me is you may have a PWM model, which effectively connect the panels directly across the battery unless that would result in too much charge current. 445 W panels are almost certainly 72 cell panels, with Vmp at about 36 V or more. Connecting them to a 28 V or even 14 V battery could explain the 45% of rated power. As the load increases, especially past the point where the panels can keep up, the battery voltage reduces from over 28/14 V to perhaps a little over 24/12 V, which is even further from the ~36+ V Vmp, so the panel efficiency goes down even further, resulting in even less power from the panels. If I'm right, you could improve performance by swapping to a model with an MPPT solar charge controller, or to panels better matched to your battery. It really helps to give more details about your setup: exact inverter model, whether the panels are in series or parallel, etc. Edited July 10, 2021 by Coulomb Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.