2 pumps in parallel, how many inverter
Happy to joint you.
I am using solar water pump for olive trees irrigation.
I installed 2 years ago 30 panels (260w each, and 15-15 in parallel) to ABB ACS355 inverter wired to 4kw submerged pump at 40 m depth and delivering 15m3/h.
I would like to pump the water in 50m3 tank. Then I am thinking to install a 1.1 kw centrifuge pump for drip installation delivering 25m3/h commanded by float switcher. I wonder if I can add more panels (6 for examples) to my old panels to become 18-18 in parallel. In the first 3 hours I will get the full pumping rate from the well till 50m3 level because the centrifuge pump will be off. By this time the lighting will be enough to run the 02 pumps for at least 4-5 hours in sunny day (we have nice sunny days in Tunisia).
My questions are: Can I connect this 02 pumps to 36 panels together and how or should I wire each pump to its own panels and inverter?