Connecting the first panel in the series string to a charge controller and on grid inverter

[SolarWindBoy]

Hi

I am in the process of designing my solar array and had a question regarding using a charge controller to power a small battery as well as a grid tie inverter.

I am planning on using the AE700TME-132BDS:

• Power = 700W
• Voc = 50.13V
• Isc = 17.43A

Using these I want to make a 22.4kW array utilising a 16S2P configuration. In my garden, I have a 24V battery and I would like to use solar power to recharge this battery before exporting the rest of the power to the grid. To do this I was thinking of making a custom cable to connect the first and the second solar panel. This solar cable would allow the first panel to also be connected to a charge controller and then to a small 24V battery.

I am not sure I have described this very well so I have made the following diagram:



Would this be possible?

I was thinking of using a charge controller like this: https://www.photonicuniverse.com/en...ls-up-to-700W-12V--1400W-24V-up-to-100V-.html

As it seemed to be suitable for the voltage/current output of the panels I will be using.

I will be very appreciative of any help that you can offer with this question! Or if there is a much better alternative that you can think of? This was opposed to having a dedicated panel that just charges the battery.

Thank you!

 

[sunshine_eggo]

You're using 700W panels?

No. You're interrupting the series string. If you pull any current from that location, you will reduce the entire string's output.

Use AC charger and put it on a timer where you charge it when you typically have peak solar.

 

[timselectric]

Listen to the eggo.