Delta Pro panel setup

[onpointe33]

Hi! New to the forum here though been reading since last year.
Currently have the Ecoflow Delta Pro 3.6kw connected to six 100W panels and two 200W panels in parallel (3 100w and a 200w connected with a BougeRV 4 to1 on either side, connecting both to a Y connector going to extension cable).
Max charging in full FL sun is only coming in at 300W and was scratching my head. I'm realizing that current is way over maximum at 70A (1600W Max, 11-150V, 15A Max) for Delta Pro.
I'm considering parallel/series combo however the fact that I've got the (2) 200 watt panels in the mix I would really appreciate some suggestions for an optimal setup as I understand that it shouldn't be in series with the 100Ws.
Should I just replace the 200w panels with 100w panels and run a 4s2p? Could I still run a 4s2p with one of each branches having (3)100w and (1)200w?
Is there an entirely different setup that would be better that my novice brain hasn't thought of?
Thanks!

 

[MisterSandals]

(3 100w and a 200w connected with a BougeRV 4 to1 on either side, connecting both to a Y connector going to extension cable).

So all 8 panels are in parallel. Whatever the voltage (Vmp) of the lowest panels will clip all the other panels to that voltage. Sum the amps (Imp) of all panels and thats your array amps.

If you post the specs (watts, amp, imp) the best config can be figured out. What is the max input voltage of the Delta Pro?

 

[onpointe33]

Delta Pro: 1600W Max, 11-150V, 15A Max. Max solar input for Delta Pro is 150V.

Six 100w Renogy panels (optimal voltage 20.4V (open circuit 24.3), optimal current (IMP) 5 amp)
Two 200w BougeRV panels (max voltage 19.1V, max current (IMP) 11 amp)

My idea was to series (3) 100w and (1) 200w on either side and parallel to the extension cable. That would be 80.3V and 10 amp (if I am looking at this right) that would be within both limits?
Obviously losing some efficiency here and more than welcome to suggestions.

 

[MisterSandals]

My idea was to series (3) 100w and (1) 200w

This clips all panels to 5A so you lose more than half of your 11A 200W panel.

Give me a moment to try a few scenarios.

 

[MisterSandals]

Make 3 2S pairs with the 100W panels. 40.4V 5A
Put 200W in series. 38.2V 11A

Combine all pairs in parallel makes 38.2V x (5A +5A +5A + 11A) = 993W

The 4 pairs will need to be fused before combining 4:1.

 

[onpointe33]

Thank you. Will the parallel amps (26A) being over the 15 amp max of the battery affect the charging capacity?

 

[MisterSandals]

Thank you. Will the parallel amps (26A) being over the 15 amp max of the battery affect the charging capacity?

The amps are pulled by the Delta Pro so it should only pull what it needs (15A max).

Besides, you've had this connected 8P with 52A and have not released the magic smoke.

 

[onpointe33]

Put another way, would that mean at 15 amp cap that it would draw less than the 993 watts with the 2s4p? (For the same reason that it's being held now at ~300watts with 8P..)

 

[MisterSandals]

Put another way, would that mean at 15 amp cap that it would draw less than the 993 watts with the 2s4p? (For the same reason that it's being held now at ~300watts with 8P..)

Your 8P setup was 20V:
20V x 15A = 300W <---- there is your number!

The array config i recommended is 40V so that would be limited to 600W (in theory).

 

[MisterSandals]

Lets munge with array numbers.

Make 3 2S pairs with the 100W panels. 40.4V 5A
Put 200W in series. 38.2V 11A

Make 2 3P pairs with 100W panels. 20V 15A

Put a 3P pair in series with 200W. 40V 11A

Put 2 of these in series. 80V 11A = 880W

Your delta pro:
80V x 15A max = 1200W (using all 880W available) <--- far better

Looks like getting the voltage up outweighs losses from combining the array to maximize watts.

 

[MisterSandals]

More munging to see what raising voltage more does...

Make 3 2P pairs. 20V 10A
Put these in series with both 200W panels: 100V 10A = 1000W

1000W <--- this is great... assuming i got the math right.

 

[onpointe33]

More munging to see what raising voltage more does...

Make 3 2P pairs. 20V 10A
Put these in series with both 200W panels: 100V 10A = 1000W

1000W <--- this is great... assuming i got the math right.

Amazing.. I agree that this is probably the max possible with this panel combo and the V/A battery limit. The amp drop from the parallel (11 --> 10) looks like it will cap it ~960w but this should perform way better than any of the other combos.
Got some new cables to order but I'll report back..