Enabling Small-Signal Stability Analysis of Black-Box Voltage Source Converters in Large-Scale Modern Power Systems. - Luis A. Garcia-Reyes; Josep Arévalo-Soler; Oriol Gomis-Bellmunt; Eduardo Prieto-Araujo; Vinícius Albernaz Lacerda; Macarena Martin; Edgar Nuño-Martínez; Javier Renedo (CoRR, 2026)