A novel flux-switching permanent magnet motor-compressor with integrated airfoil-shaped rotor design

The purpose of this paper is to propose a novel flux-switching permanent magnet motor with an integrated airfoil-shaped rotor. Some of the conventional axial-flow compressor systems need an electric motor to provide mechanical energy input to the compressor. The proposed novel flux-switching motor-compressor can integrate both an electric motor and an axial-flow compressor into a single entity and perform axial-flow compression using the airfoil-shaped rotor. This integrated motor-compressor design eliminates the connection between the electric motor and compressor and makes the entire system more compact. Due to the high-speed nature of the integrated motor, no gearbox is needed in the proposed design so that reliability is improved. The principle of design for the proposed integrated motor-compressor is discussed. Analytical studies for the thermodynamics and electromagnetics are elaborated in this paper. A case study design is done to investigate the effect of rotor airfoil curvature to the torque production capability, and the results are demonstrated by finite element analysis.

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