Análisis diseño y simulación de un sistema de control para un conversor multipuerto dc/dc bidireccional de cuatro puertos de puente completo aplicado a la generación de energía en baja potencia utilizando paneles fotovoltaicos.

Abstract

This Technical Project presents a control strategy for the four-port full-bridge multiport converter applied to power generation in a 6[kW] to 600[V] isolated system using photovoltaic panels. The interface considered connects two input ports for photovoltaic panels (solar energy), a bidirectional port for a battery bank, and an isolated output port. The objectives of the control system are maximum power point tracking of the panels, voltage regulation at the output port, and an efficient charge and discharge control for the battery bank. Unlike previous works, a cascade type supervisory control system was designed working in parallel with a maximum power point tracker. To regulate the output port power, a sliding mode controller has been considered. The results obtained by simulation under different operating conditions showed that the control is robust and versatile to both disturbances and load, keeping the system operating within the established parameters in a constant manner.