Hello guys!
Please help me clear this!
(if it's already discussed, SORRY for repeat)
Some intro:
I have a PowMr 5.5kW off grid SCC+inverter (yea know it's not the top quality stuff on the market). I have 9x385W (3465W) mono panels connected to it. I have a 100Ah 51,2V LifePo4 battery. I'm using it for 2 years now without any problem.
Recently I upgraded the system a little bit: bought a Victron Smartsolar 100/20(48V) SCC with 2*285W poly pv panels and connected them to the battery too.
This whole system is a kinda test, experiment or more to say... hobby for me.
But, the question: what about extreme overpaneling?
If I'm right the SCC only draw that much power from the panels, that it pushing out to the battery.
So (theoretically) If I don't exceed the SCC's max input voltage, and make everything correct (correct connecting, fuses, polarity, etc..) I can connect infinite amount powered solar array?
For exapmle:
Victron 100/20.
Max voltage:100V.
Max current: 20A (max. battery charge 58*20A=1160W).
If I connect a 2s10p solar array (about ~Vmp:75V and Imp:90A =~6750W) there won't be ever any problems. I just waste a lot of power cause of clipping, right?
Is there any chance of the SCC somewhy try to draw more than 20A? Sudden cloud, then back full sunshine or any tracking anomaly? Any danger about it? What about Isc? When will the SCC short circuits the PV input? And why? Because the manual have a max input Isc (20A).
Is anybody here own a system with 400% - 500% overpaneling? What are the experiences?
I know it is a brutal amount of energy waste in summer but now I'm only interested about the physics.
Thanks any answers!
Please help me clear this!
(if it's already discussed, SORRY for repeat)
Some intro:
I have a PowMr 5.5kW off grid SCC+inverter (yea know it's not the top quality stuff on the market). I have 9x385W (3465W) mono panels connected to it. I have a 100Ah 51,2V LifePo4 battery. I'm using it for 2 years now without any problem.
Recently I upgraded the system a little bit: bought a Victron Smartsolar 100/20(48V) SCC with 2*285W poly pv panels and connected them to the battery too.
This whole system is a kinda test, experiment or more to say... hobby for me.
But, the question: what about extreme overpaneling?
If I'm right the SCC only draw that much power from the panels, that it pushing out to the battery.
So (theoretically) If I don't exceed the SCC's max input voltage, and make everything correct (correct connecting, fuses, polarity, etc..) I can connect infinite amount powered solar array?
For exapmle:
Victron 100/20.
Max voltage:100V.
Max current: 20A (max. battery charge 58*20A=1160W).
If I connect a 2s10p solar array (about ~Vmp:75V and Imp:90A =~6750W) there won't be ever any problems. I just waste a lot of power cause of clipping, right?
Is there any chance of the SCC somewhy try to draw more than 20A? Sudden cloud, then back full sunshine or any tracking anomaly? Any danger about it? What about Isc? When will the SCC short circuits the PV input? And why? Because the manual have a max input Isc (20A).
Is anybody here own a system with 400% - 500% overpaneling? What are the experiences?
I know it is a brutal amount of energy waste in summer but now I'm only interested about the physics.
Thanks any answers!
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