Jamshid Roshdi - Department of Electronic, Shabestar Branch, Islamic Azad University, Shabestar, Iran
Jaber Pouladi - Department of Electronic, Shabestar Branch, Islamic Azad University, Shabestar, Iran

In this paper, a new type of single-phase grid-connected photovoltaic system through Z- source inverter along with an automaticoutput voltage controller is introduced. Such system has a buckand boost converterswhich are being sequentially aligned to provide Z - source inverter with the required input constant voltage. Also, to minimize the output voltage ripple and to conduct filtering, the harmonics related to capacitorparallel with the output were intended which will eventually lead to an almost sinusoidal voltage and with a relative rangeapproximately equal to the amplitude of the grid voltage.The results of simulation with MATLAB / Simulink software can be observed.

solar light energy, Z - source inverter, buck converter, boost converter, solar cell