A solar photovoltaic in-line UPS system using space vector modulation technique

This paper describes an application of the space vector modulation (SPM) technique to a photovoltaic assisted single-phase line-interactive inverter operating as an uninterruptible power supply (UPS). The performance of this inverter is comparable to a unipolar sinusoidal pulse width modulation (SPWM) operating at higher switching frequencies. Preliminary experimental results using a DSP-based system and simulation using Matlab/Simulink confirm the validity of the proposal. This UPS has built in features such as active filtering, demand side management and integration of renewable energy sources such as photovoltaic (PV). In this paper, comparison of SVM and SPWM in single-phase together with simulation and experimental results are also included.