Modeling and Simulation of DC-DC Boost Converter-Inverter System with Open-Source Software Scilab/Xcos

This paper proposes a mathematical modelling of DC-DC boost converter-inverter system and simulation work is carried out using Scilab/Xcos, which is free and open-source software. In this paper a two-stage DC-AC power conversion system is presented. This system consists of two converters, DC-DC boost converter and single-phase inverter. The boost converter converts input DC low voltage into high DC output voltage. The DC output from boost converter is converted into AC output voltage by an inverter. The mathematical model of a DC-AC boost converter-inverter system is presented with four different modes of operations. By using Kirchhoff’s voltage and current law, the system mathematical model is derived from each operation mode. The mathematical model of the proposed system is represented and state-space matrix is derived. Moreover, the steady-state values of the system are also presented. The transient behaviors of the proposed mathematical model are validated with Xcos simulation results.