Analysis of holdup time for DC grid-forming isolated active front-end convertersCarvalho da Silva, Edivan Laercio; Blinov, Andrei; Chub, Andrii; Vinnikov, DmitriIECON 2022 - 48th Annual Conference of the IEEE Industrial Electronics Society2022 / p. 1-6 https://doi.org/10.1109/IECON49645.2022.9969075 Conference proceedings at Scopus Article at Scopus