An inverter is an electrical or electro-mechanical device that converts direct current (DC) to alternating current (AC); the resulting AC can be at any required voltage and frequency with the use of appropriate transformers, switching, and control circuits.
PV modules generate direct current (DC), the kind of electricity produced by batteries. Although incandescent lights can operate on DC, most electric devices require 220-volt alternating current (AC) as supplied by utilities. Inverter converts DC to AC current. Inverters vary in size and in the quality of electricity, they supply.
