Almot wrote:
Not a news, really. I believe most (any?) MPPT can be used with oversized array. Benefits are well known: the I/t curve (t=time) becomes flatter with larger array, the tip is clipped but shoulders are wider. Better production in early hours and/or on cloudy days.
Oversizing "might" have a detrimental effect due to more heat in controller operating near max output. Though I have a gut feeling that after you've arrived to clipping point, it doesn't matter how much you exceed it, heat is still the same. Perhaps somebody who understands the clipping better will correct me.
I've been saying this for years on here and people either argue or don't understand what I said. Maybe I should have been as eloquent as you! Well said! My last two home installs were like this as well as my residential installer is the one that clued me into this trick.
One was 8kw array with 7kW inverter, currently I have a 15kw array with 13 kw of inverters.
