A special issue of Machines (ISSN 2075-1702). Special Issue Editor Guest Editor Prof. Dr. Paul Stewart School of Engineering, University of Hull, Cottingham Road, Hull HU6 7RX, UK Website: http://www2.hull.ac.uk/science/engineering/our%20staff/academic/paulstewart.aspx E-Mail: p.stewart@hull.ac.uk Phone: +44 1482 466665 Interests: complex system simulation, design and optimization; engineering applications of artificial intelligence; advanced control systems; power and energy architectures; electrical machines, drives and systems; […]