162943 20251009133839.0 doi 10.1016/j.ijepes.2019.105746 sideral 139328 ART-2019-139328 eng Haro-Larrode, Marta (orcid)0000-0003-0473-9104 Impact of proportional resonant controller parameters of VSC connected to AC grids with variable X/R characteristic on the small signal stability 2019 Access copy available to the general public Unrestricted The purpose of this paper is to assess the impact of proportional resonant controller (PR) parameters of a Voltage Source Converter (VSC) and AC grid topology on the small signal stability of a VSC-AC system. Based on this, a small signal model is constructed, step by step, and validated against EMT simulations. Following this validation, several scenarios containing different PR controller gains are proposed and compared by means of trajectory of eigenvalues. A discussion of the best adequacy of PR controller parameters and AC grid strength in combination with inductive-resistive characteristic (X/R) is developed to ensure the stability of the system. The previous eigenvalue analysis is verified in time domain by means of EMT simulations. The analysis performed concludes that, while the AC grid strength in combination with PR controller parameters plays an important role in determination of stability, variations in the inductive-resistive AC grid characteristic need to be included in the analysis, since further instabilities can appear even when the PR controller is well designed for a specific AC grid configuration. info:eu-repo/semantics/openAccess by-nc-nd https://creativecommons.org/licenses/by-nc-nd/4.0/deed.es 3.588 2019 ENGINEERING, ELECTRICAL & ELECTRONIC 66 / 265 = 0.249 2019 Q1 T1 1.203 2019 Energy Engineering and Power Technology 2019 Q1 Electrical and Electronic Engineering 2019 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Santos-Mugica, Maider Eguia, Pablo Rodriguez-Sanchez, Raul Gil-de-Muro, Asier 118 (2019), 105746 [13 pp.] Int. J. Electr. Power Energy Syst. INTERNATIONAL JOURNAL OF ELECTRICAL POWER & ENERGY SYSTEMS 0142-0615 5918447 http://zaguan.unizar.es/record/162943/files/texto_completo.pdf Postprint 2249658 http://zaguan.unizar.es/record/162943/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:162943 articulos driver 2025-10-09-13:25:47 ARTICLE