autores Afonso, João L. Júlio Manuel de Sousa Barreiros Martins Monteiro, Vítor Duarte Fernandes Fernandes, J.C.A. Martins, Júlio S. Aparício Fernandes, J. C.
palavras-chave DC grids Future power grids Hybrid AC/DC grids Power electronics Power quality Smart grids Solid-state transformers Unified multi-port converters hybrid AC