Abstract
This paper addresses the approach to improve the efficiency of the quasi
Z-source inverter. In order to increase the efficiency the reduction of
conduction losses is one way to approach. Sequentially to decrease the
conduction losses in the quasi z-source inverter the replacement of diode is
replacing with switches is proposed which is also called as synchronous
rectification. The paper represents basics of the approach, analysis
and comparison of the power losses of the traditional and proposed designs
of the grid connected PV-system with quasi z-source inverter system. The
proposed approach validated on the computer simulations in the MATLAB
environment.