Parallel or series parallel

[asdex]

Hi, if I connect my new panels in parallel I get max outputs of around 40 amp and 45 volts.
If I connect series/parallel I get 20 amps and 96 volts.
My controller is rated max of 50 amps and 150 volts.
Which option would be best. Its a 24 volt system.
Cheers,

[Mike90250]

Using a PWN controller, I'd opt for panels in parallel. You might need to use 2 controllers, with half the panels on each controller. Gives you a bit of redundancy.

Panels in series, I'd limit it to just two in series, a MPPT controller has to work harder to convert high PV voltage to lower battery voltage.

Do you know what kind of controller you have ?

[asdex]

Thanks, yes it's an Epever Tracer 5415AN

[Mike90250]

Thanks, yes it's an Epever Tracer 5415AN

Is that a PWM or a MPPT controller ?

[asdex]

It's a Mppt controller.

[Mike90250]

OK, if it's MPPT, you want to run just 2 panels in series. How many panels do you have ? The controller should limit itself to 50A, and if you have 55A available, it should be able to handle a
small amount of overpaneling without a problem.

[asdex]

I have four 360 watt panels. Max o/c voltage 47.4v. Max current 9.24A.
Thanks

[Mike90250]

1440w of panels, derate 20% = 1152 realistic watts @ 26V = 44.3A expected output under reasonable conditions.

2 panels in series, and paralleled with the pair of panels in series, is likely your best bet

[asdex]

Great, thanks very much.

[asdex]

So would be the controller input be 96 volts and 20 amps? So two panels in series 47.4v x 2 in both sets of panels in series and 9.24A x 2 for the panels in parallel.

[Mike90250]

So would be the controller input be 96 volts and 20 amps? So two panels in series 47.4v x 2 in both sets of panels in series and 9.24A x 2 for the panels in parallel.

Yes. MPPT chargers are rated at output amps ( you said yours was 50A )

[asdex]

Great, I Didn't know that.
Thanks