Gonzalez JM, Busada CA, Solsona JA. Robust Controller Design for a Grid-Connected VSI via an LCL Filter in the Presence of Unknown Grid Impedance. J. Electron. Electric. Eng. [Internet]. 2024 Nov. 25 [cited 2026 Aug. 11];3(2):490–515. Available from: https://ojs.wiserpub.com/index.php/JEEE/article/view/5702