Electromechanical trade-off analysis of PM-assisted Synchronous reluctance motors

Abstract

Current industrial trend shows a growing care towards energy efficiency. Some rotor technologies, such as Synchronous Reluctance and PM-assisted Synchronous Reluctance, are revealing their potential for sustainable costs and environmental safety. These technologies use very high saliency designs with large empty parts in rotor lamination, leading to small highly stressed mechanical parts in the rotor structure ("bridges" or "ribs"), whose dimensions in turn affect performance. Aim of this work is a trade-off analysis of electromechanical design for PM-assisted Synchronous Reluctance motors, investigating different configurations and strategies for iron bridge sizing.

Multi-physics modeling and optimization of a multi-V-shape IPM with concentrated winding

“…Magnet-free machines such as switched reluctance and flux switching motors were compared in [3]. Non-rareearth permanent magnets such as ferrite were used as an additional torque source in synchronous reluctance motors [4], [5]. The previously mentioned structures are generally designed with distributed winding but more novel topologies with multi-V shape interior permanent magnets and concentrated tooth winding were also capable of developing a high torque at low rotational speed [6].…”