Solid-State Circuit Breakers for D.C. Microgrid Applications

With the significant changes that the energy sector has been facing in the past decades, microgrids have become a reality. D.C. microgrids are considered to be more reliable and stable, which makes it preferred over A.C. systems. However, it still faces challenges in its operation, which makes it necessary for finding an alternative protection system. New technologies are being studied and developed for protections of low and high voltage D.C. systems, and circuit breakers made with semiconductors can be applied as they are found to be faster and more efficient than the traditional mechanical breakers. This paper presents the reviews of the current technology and some applications that have been studied in the field recently.