Hedges
I See Electromagnetic Fields!
- Joined
- Mar 28, 2020
- Messages
- 20,808
Voltage is nearly the same whether direct sun or oblique.
Just do the math for 4s. That is, max Voc on record coldest temperature for your location not exceeding max allowed voltage input, and min Vmp on a hot day with panels hotter than ambient not below min MPPT operation.
If you will have shading, the voltage of a panel or diode-bypassed portion of panel will drop off. If that would be below minimum MPPT, would cause further loss of power.
Just do the math for 4s. That is, max Voc on record coldest temperature for your location not exceeding max allowed voltage input, and min Vmp on a hot day with panels hotter than ambient not below min MPPT operation.
If you will have shading, the voltage of a panel or diode-bypassed portion of panel will drop off. If that would be below minimum MPPT, would cause further loss of power.