Improved Z-Source Inverter Controller for Enhancement of Grid-Tied PV systems

Authors

Salah Anis Krim
Laboratory of Power Electronics and Industrial Control, Electronics department University of Setif-1, 19000 Setif
Hamza Afghoul
Laboratory of Power Electronics and Industrial Control, Electronics department University of Setif-1, 19000 Setif
Fateh Krim
Laboratory of Power Electronics and Industrial Control, Electronics department University of Setif-1, 19000 Setif
Feriel Abdelmalek
Laboratory of Power Electronics and Industrial Control, Electronics department University of Setif-1, 19000 Setif
Djallal Eddine Zabia
LI3CUB Laboratory, University of Mohamed Khider Biskra, 07000 Biskra
Taha Lamdjed Belahcene
LI3CUB Laboratory, University of Mohamed Khider Biskra, 07000 Biskra

Synopsis

This paper presents a photovoltaic (PV) system using a three-phase impedance source inverter (ZSI) by optimizing PWM signals to reduce harmonics. One of the advantages of this inverter compared to traditional inverters is to have buck-boost capability. ZSI can increase the output voltage according to its structure. ZSI has the unique feature of shoot-through (ST) operation, which allows short-circuiting the switches of one leg of the inverter, thereby eliminating switching dead time to improve output performance. According to the characteristics of the ZSI, in this paper, by optimizing the PWM signals, the total harmonic distortion (THD) value is reduced and ultimately improves the power quality in the output waveform of the system. The simulation results are obtained using MATLAB/Simulink software.

ICAECE2023
Published
February 5, 2024