Nathalia Campos conducted her first secondment at KU Leuven, from June to August 2019 under the supervision of Prof Jef Beerten. Her main goal was to investigate the applicability of RMS power converter models with different levels of complexity for stability studies. The research results identified the limitations for the use of these models, leading to the investigation of hybrid modelling as an alternative, combining the advantages of both EMT and RMS approaches. As part of the secondment, she had the opportunity to work at EnergyVille innovation hub which provided an enriching experience where she could exchange ideas with researchers from closely related areas. Towards the end of her stay, she presented her work at the HVDC Colloquium 2019, Leuven.