Integration of solar powered DC homes to DC microgrid using dual active bridge converter

Abstract

In this paper, the dual outputs dual active bridge (DAB) converter is proposed for the integration of solar powered DC homes with DC microgrid. The main features of this converter include reduced circuit complexity and ease the control using simple phase shift modulation. The revised P&O MPPT for the phase-shift modulation scheme is implemented to utilise PV modules efficiently. Based on the desired power levels, the converter is designed such that all the semiconductor switches operate in ZVS condition most of the time. A simple control scheme is introduced to regulate the power flow among DC homes and DC microgrid. An experimental 300 W prototype is built to confirm the viability of the proposed converter and control.