Design of a permanent magnet assisted synchronous reluctance machine enhanced for saliency based sensorless control

Current industrial trends show a growing interest for variable speed drives, energy efficiency and environmental sustainability. Synchronous Reluctance Machines (SynRM) and Permanent Magnet assisted Synchronous Reluctance Machines (PMaSynRM) can fulfill these requirements with proper designs. This paper provides a machine design of a PMaSynRM for saliency based sensorless control. A detailed approach is illustrated. By the use of ferrite magnets and a glass fiber rotor bandage a good efficiency and an excellent anisotropy at all operating points can be achieved.