Analysis of Single-Phase ZSI with various Loads

Abstract

This paper presents a high performance, low cost Z-Source inverter (ZSI) for variable load or house hold applications. It is an improvement over traditional voltage and current source inverters (VSI and CSI) with a unique X-shaped network. The X-shaped network can provide a single stage power conversion concept whereas the traditional inverter requires two stages of power conversion for renewable applications. ZSI system is designed and simulated using Matlab-Simulink PWM signals generated by using microcontroller with 10KHz switching speed. The performance analysis, simulation and comparison have been carried out it result the ZSI system is more suitable as compared to traditional inverters. The efficiency, stability, the total harmonic distortion against the non-linear load is also better as variations in modulation index.