**About the Editor**

**Rafael Sebasti´an Fern ´andez** received an M.Sc. degree in industrial engineering from the Universidad Politecnica de Madrid, Madrid, Spain, in 1983, and a Ph.D. degree in electrical ´ engineering from the Spanish University for Distance Education (UNED), Madrid, in 2003. He was an Assistant Professor with UNED from 1984 to 1989. From 1990 to 2000, he worked as an Electronic and Control Design Engineer in several companies in Spain. In 2001, he returned to UNED, where he is currently working with the Electrical, Electronic, and Control Engineering department. He is an Associate Professor of electronics technology, lecturing on analog electronics, electronic instrumentation, and distributed control systems, among other subjects. He has authored 60 papers published in international conferences and journals.

His research interest areas are the modeling, simulation, and control of isolated microgrids, based on wind turbine generators alone or combined with diesel generators or hydro turbine generators. Additionally, his research field embraces energy storage systems mainly based on batteries and flywheels.
