Different size panels in Parallel

[tektrader]

I am looking at a system of SUNMAN Earc flex panels on our RV and have to use a range of sizes to fit the roof spaces available.

Is the VOC or the VMP the most relevant spec to match with each panel so they can co-exist? They appear to be consistent with each other in any case.

I expect the actual cells are the same, just the number and configuration being different.

 

[sunshine_eggo]

I am looking at a system of SUNMAN Earc flex panels on our RV and have to use a range of sizes to fit the roof spaces available.

Is the VOC or the VMP the most relevant spec to match with each panel so they can co-exist? They appear to be consistent with each other in any case.

Both.

Vmp and Voc should be very similar for panels in parallel, say ±5%

For panels in series, all panels in the string will operated at the Isc of the LOWEST panel. Series Isc should be as close as possible.

 

[tektrader]

Thanks for confirming.... The 430w panel has a VOC of 50v and a VMP of 42v... The 100w panels have a VOC of 25v and a VMP of 21v. I will series connect the 100W panels and put them in parallel with the 430w..... Should be just fine....?