Recent advances in electrical machines (ICEMS 2014) (PDF)

This special e-book of COMPEL includes the extended and improved versions of a selection of papers presented at the 17th International Conference on Electrical Machines and Systems (ICEMS2014, 22-25 October, 2014, Hangzhou, China).The current trends of electrical machines include: high torque, high torque density, high power, high power density, high speed, direct drive, high efficiency, high flux adjustability, high reliability, high fault tolerance, high manufacturability, low cost, low noise and vibration, high system performance, high integration of materials, power electronics, machines, and controllers.System level integration and design consideration are key technologies and are essential for different applications. Various design considerations at the system levels should be taken into account, otherwise the electrical machines may not be able to satisfy the system requirement and/or the drive and controller cannot fully exploit the potential capacity which an electrical machine can offer. Permanent magnet machines exhibit high torque density and high efficiency and are most extensively investigated with significant development. They become popular for numerous applications, ranging from domestic appliances, electric vehicles/hybrid electric vehicles, more electric aircrafts, to wind power generation. However, rare-earth permanent magnets are still relatively expensive and there are concerns about their resources and relatively high cost. Hence, "e;magnetless"e; machines, using no magnet or fewer magnets, are being seriously investigated or re-examined; e.g. induction machines and switched reluctance machines and wound field machines.Numerous electrical machine topologies are emerging; each may exhibit some novel features but also problems. There is no "e;perfect"e; electrical machine and the advantages are highly dependent on application and requirement. This special e-book is mainly dedicated to the design, analysis, and control of permanent magnet synchronous machines and switched reluctance machines.