An Advanced High-Speed Permanent Magnet Synchronous Machine Utilizing Amorphous Alloy Core with Unequal Tooth Width

Application of amorphous alloy in electrical machine has sparked a lot of interest recently for its low loss characteristics. However, considering the difficulty in processing the material, design of amorphous alloy core (AAC) topology is still in research stage. In this paper an advanced topology of high-speed permanent magnet synchronous machine (HSPMSM) utilizing amorphous alloy core is proposed. This topology avoids overmuch cutting in forming AA stator core while exhibits the attractive merits of high fault tolerance and high output torque ability with unequal tooth width. Analytical results of this topology using magnetic equivalent circuit are compared to finite element analysis results, and the output characteristics of the machine is given.