Islanded Operation Techniques in Distributed Power Using Dual-Active-Bridge Converters

This paper proposes an islanded operation technique using DC-DC converters. The necessity of DC-DC converters and Dual-Active-Bridge converters in distributed power is analyzed. This paper shows soft-start and voltage control using Dual-Active-Bridge converters for stable operation in the DC grid. To validate the proposed algorithm, parameters are selected and a prototype is designed. The validity of the proposed islanded operation technique is demonstrated by the experimental results.