Solar microsystem modeling and simulation: photovoltaic inverter control based on energy technical product quality criteria

Abstract

In this work an analysis of the quality of electric power in off-grid solar photovoltaic microsystems is carried out. Applied to an existing case study in an island developing country like Cuba, the purpose is to control the bridge inverter to reduce the effect of harmonics. The tripping of the switches is controlled by pulse width modulation (PWM). The design is computer aided with Simulink / Matlab. The testing of different control strategies in these systems resulted proposing the design method of a Proportional - Resonant controller control system. The results with an isolated single-phase system with a residential load reveal the reduction of the total harmonic distortion (THD) in the voltage at the output of the solar PV inverter filter to the AC load.