Bontemps, Philippe AlexandreHugo, NicolasDujic, Drazen2020-10-282020-10-282020-10-28202010.1109/IECON43393.2020.9254499https://infoscience.epfl.ch/handle/20.500.14299/172820Flexibility Enhancements in Pumped Hydro Storage Power Plants through Variable Speed Drivestext::conference output::conference proceedings::conference paper