The main circuit of solar on grid inverter is presented in the following diagram. . To produce a modified square wave output, such as the one shown in the center of Figure 11. This feature allows adjusting the duration of the alternating square pulses. . Power inverter is a device that converts electrical power from DC form to AC form using electronic circuits. A solar inverter or photovoltaic (PV) inverter is a type of power inverter which converts the variable direct current (DC) output of a photovoltaic solar panel. . The structure of solar grid tie inverter is presented in the following diagram, consisting of front-end DC/DC inverters and back-end DC/AC inverters.