Organization of PV System with Dispersed PV Array

Abstract

Because of short of south-faced roof area of a building for PV array, PV array is often installed separately on multi surfaces of which azimuth or tilt angle is different. In this case, I-V curve of PV string on each surface is different each other. This causes reduction of output of PV array and a new system organization with multi string-inverter is proposed to solve this problem. The effect of new proposed system organization was studied by simulation. In this paper, the result of analysis on mismatch loss, stand-by loss, overload loss and loss of energy conversion by inverter was reported in detail. And it was concluded that an annual output energy of new system almost equals to that of a conventional PV system with a central inverter.