Help connect solar panels to ecoflow Delta Pro

[grazitruck1]

Hello everyone im very new with this but i like to learn and love the idea of free solar energy powering my food truck.
I do need lots of help figuring out what the best way to connect solar panels to my ecoflow delta pro.
I m already in possess of 3 Ecoflow flexible panels of 100w maximum voltage 17.1V
maximum current 5.9 A.

Then I have 4 Callsun flexible panels of 100w max Voltage 18.61 V
Max current is 5.38 A.

Ecoflow delta pro Max solar imput 1600w
Maximum Voltage 150V
Maximum current 15A


I choose the flexible panels because of been light weight and easy to mount on the roof of my food truck.
See below picture sketch of the ideal space and arrangement i have available.

Any help will be greatly appreciated

Thank you

 

[mikefitz]

Any help will be greatly appreciated

The important voltage for solar panels is the open circuit voltage, Voc. With the panels in series the total of Voc must be lower than the maximum limit of the power station. Since Voc increases with cold conditions some allowance just be taken for the voltage increase, say 5% down to freezing and more if below freezing is encountered. For simple calculations assume a limit of 140 volt.
Ecoflie Voc is 20.3 volts, Callsun Voc is (estimated) 22 volts.

Idealy the panels need to be identical but what you have can be used with some slight loss.
.
All 7 panels in series Voc total is 149 volts, this is too near the limit and in cool conditions will exceed the limit.
Acceptable is 6 panels in series, maximum current will be the lower value, 5.38 amps.

Alternative is two series strings , each of 3 panels, connected in parallel. The voltage is not quite the same but acceptable.
If you add a further panel, 8 in total, two series strings, each of 4 panels, connected in parallel is an option.