Abstract
The objective of this article is to propose the concept of and evaluate the potential performance of an integrated flux-switching permanent magnet (FSPM) motor-compressor that has rotor poles designed as airfoils to perform compression functions. The airfoil-shaped rotor functions as the rotor of both an electric motor and an axial-flow compressor. As a result, the integrated motor-compressor increases the compressor system compactness by eliminating the separation between the motor and compressor. In this article, the electromagnetic and thermodynamic designs are developed using sizing equations and mean line analysis. Four design configurations of the integrated motor-compressor are carried out and evaluated, including the continuous-skewed versus step-skewed structure and laminated steels versus soft magnetic composite (SMC) materials. The thermodynamic performance is calculated by mean line analysis and computational fluid dynamics (CFD). The electromagnetic performance and structural analysis are evaluated by finite element analysis (FEA). The comparisons of the integrated motor-compressor with conventional motor-driven compressors are conducted. Results from FEA and CFD verify the integrated motor-compressor.
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