two separate PV arrays - should I use one or two controllers?
just starting design but have been getting conflicting advice. plant to have one 2 x2 PV array (100 watt 12 V panels) at an adjustable tilt from 0 deg to 70deg and another 1 x2 array (same panels) at a fixed 12 deg from horizontal. Arrays are separated by about 30 feet but both are same southern orientation. Plan to have three 1x2 series strings for nominal 24 V each (two strings on the tiltable array and one string on the fixed array). Plan to use one 12 or 24 v battery bank. Should I use one (larger) MPPT controller for both arrays or two (smaller) MPPT controllers - one for the 1x4 tiltable and one for the 1x2 fixed? Or doesn't it make much difference (in which case I'll go with cheapest alternative). Thank you. Peter
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