Tuning of Synchronous-Frame PI Current Controllers in Grid-Connected Converters Operating at a Low Sampling Rate by MIMO Root Locus.
Francisco D. FreijedoAna VidalAlejandro G. YepesJosep M. GuerreroÓscar LopezJano MalvarJesús Doval-GandoyPublished in: IEEE Trans. Ind. Electron. (2015)