Analysis on the Influence of Calendering Process Parameters on Magnetic Properties of Composite Rotor of HSPMM

This paper presents a high-speed permanent magnet motor with a composite rotor (CR-HSPMM). The multi-layer complex film magnetic material (MCFMM) with low conductivity and high tensile strength is a significant component of composite rotor. The magnetic and conductive properties of MCFMM will be directly impacted by the calendering process parameters. The mathematical model of calendaring process is developed based on the Rabinowitsch fluid. The mapping relationship between calendaring process pressure and magnetic properties of MCFMM is obtained by Huang Peiyun's double logarithmic equation. And the conductivity of MCFMM are calculated with various calendering process parameters. The influence of calendering process parameters on the magnetic properties and eddy current loss of composite rotor are comprehensively analyzed. The mathematical model and conductivity of MCFMM are tested and verified by the experiment. The CR-HSPMM protypes are fabricated to verify the accuracy of numerical calculation results.