Ph.D. in Ingegneria Elettrica, Elettronica E Delle Comunicazioni , 32nd cycle (2016-2019) Ph.D. obtained in 2019 Dissertation: An efficient and reliable drive system for oil and gas recovery in subsea applications Tutors: Iustin Radu Bojoi Publications Works published during the Ph.D. View all publications in Porto@Iris Daoud, Mohamed (2019)Multiphase Modular Multilevel Converter Based Drive System for Oil and Gas Recovery in Subsea Applications. relatore: , , P.: 160 Doctoral Thesis