Ivan Z. Petric Slobodan N. Vukosavic Michele Degano Alessandro Galassini A Digital Internal Model Current Controller for Salient Machines. 4703-4717 2021 68 IEEE Trans. Ind. Electron. 6 https://doi.org/10.1109/TIE.2020.2988234 db/journals/tie/tie68.html#PetricVDG21