The use of soft magnetic composite materials in synchronous electric motor

Abstract

This paper presents some aspects of soft magnetic composite (SMC) material application in synchronous electric motors (SEM). The presented stator core of the SEM was made of two types of soft magnetic materials: the classical laminated silicon iron sheets and the SMC material. First, the stator core made of SMC, which was of the same shape as the laminated core, was analysed. The next step was to search for the optimal shape of the core. The comparison of both cores includes the calculated torque, magnetic conditions and simplicity of fabrication. The 3D FEM was used to analyse the magnetic conditions and the calculated torque. The design and the analysis were validated by experimental results obtained on the prototype.