Enhanced Frequency Droop Method for Decentralized Power Sharing Control in dc Microgrids

This article proposes two novel approaches to improve the superimposed frequency droop scheme for control of dc microgrids (MGs). Conventional voltage-based strategies suffer from issues such as undesirable voltage regulations, poor power sharing among sources, and negative effects line resistances on equivalent characteristics. To overcome these challenges, a has been introduced. However, this method suffers three major issues: 1) instability in terms load variation, which is due location system dominant poles; 2) limitation loading transferred reactive power; 3) quality caused by injection ac voltage. In article, methods are presented stabilize enhance its condition, consequently improving viability MG. Furthermore, improved limiting amplitude injected The effectiveness proposed schemes shown different simulations further validated experiments.