I have two MPP Hybrid units each fed by it's own 1300 Watt array. Each inverter is powering separate AC circuits via a reliance transfer switch. What I'm seeing is that when the load doesn't demand it the PV doesn't produce as much. For example if the load is say 250 Watts the PV may produce 500 Watts. If I increase the load to say 900 Watts the PV output jumps up to 800 Watts. Turn off that load and the PV output drops. The unit is also configured to use solar to charge the battery bank so its allocation some watts it's producing to the batteries. In the example above about 4 amps would be going to the battery - When I increase the load the amps to battery goes to 0 but as soon as I drop the load the amps to battery goes to 25 or so for about 8 seconds and then back to 4 amps.
Why isn't the PV always generating everything it's capable of without an AC load? If the load requirement is not there, the need to charge the battery bank is and I'd think it would be pushing everything it can to get the batteries charged.
Forgive me if this a noob question - It just seems to me that I'm leaving capacity on the table and strikes me as odd that the panels produce more only when I ask them to
Why isn't the PV always generating everything it's capable of without an AC load? If the load requirement is not there, the need to charge the battery bank is and I'd think it would be pushing everything it can to get the batteries charged.
Forgive me if this a noob question - It just seems to me that I'm leaving capacity on the table and strikes me as odd that the panels produce more only when I ask them to
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