**About the Editors**

**Fr ´ed ´eric Dubas** was born in Vesoul, France, in 1978. He received the M.Sc. degree and the Ph.D. degree from the "Univ. Bourgogne Franche-Comte" (Besanc ´ ¸on, France) in 2002 and 2006, respectively, with a focus on the design and optimization of the high-speed surface-mounted permanent-magnet (PM) synchronous motor for the drive of a fuel cell air-compressor. From 2014 to 2016, he was the Head of the "Unconventional Thermal and Electrical Machines" team. Presently, he is the Head of the "Electrical Actuators" group in the "Hybrid & Fuel Cell Systems, Electrical Machines (SHARPAC)" team. He works with ALSTOM Transports (Ornans, France), and RENAULT Technocenter (Guyancourt, France), where he is involved in the modelling, design and optimization of electrical systems and, in particular, induction and PM synchronous (radial and/or axial flux) machines, creative problem-solving, and electrical propulsion/traction. He is currently an Associate Professor with the Dep. ENERGIE, FEMTO-ST Institute, affiliated with the CNRS ´ and jointly with the "Univ. Bourgogne Franche-Comte" (Besanc ´ ¸on, France). He has authored over 100 refereed publications and he holds a patent for the manufacturing of axial-flux PM machines with flux-focusing. Dr. Dubas received: i) the Prize Paper Awards in the IEEE Conference Vehicle Power and Propulsion (VPPC) in 2005; ii) the Prize Presentation Awards in the 19th International Conference on Electrical Machines and Systems (ICEMS) in 2017; iii) the RENAULT Internal Award (Direction Engineering Alliance—Innovation) in 2019.

**Kamel Boughrara** was born in Algiers, Algeria, in 1969. He received the Engineer Diploma degree from Ecole Nationale Polytechnique (ENP), Algiers, in 1994, the magister degree from the University of Sciences and Technology Houari Boumediene, Algiers, in 1997, and the Ph.D. degree from ENP in 2008. He is currently a Professor with ENP and the Director of the Laboratoire de Recherche en Electrotechnique, Algiers. His current research interests include modeling and control of electrical machines.
