A Stable Start-Up Control Strategy for VSC-Based DC Microgrid

Abstract

To minimize the over-current and over-voltage impact during start-up process of DC microgrid, a coordinated start-up strategy for multi-terminal DC microgrid is designed. For safety operation of the system, AC power grid and energy storage system (ESS) are both used as slack terminal, and a first order inner loop is adopted to achieve the smoothly startup of the system. In combination with the DC microgrid experimental platform, experiments are carried out to verify the effectiveness of the proposed method.