Nonlinear optimal control for ship propulsion with the use of an induction motor and a drivetrainGerasimos Rigatos, Krishna Busawon, Dimitrios Serpanos, Vasilios Siadimas, Pierluigi Siano and Masoud AbbaszadehMATEC Web Conf., 188 (2018) 05007DOI: https://doi.org/10.1051/matecconf/201818805007