Permanent Magnet Synchronous Reluctance Machines With Axially Combined Rotor Structure

IEEE TRANSACTIONS ON MAGNETICS(2022)

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摘要
A permanent magnet synchronous reluctance machine (PMSynRM) is studied in this article. It has a stack of surface-mounted permanent magnet (SPM) rotor and a stack of synchronous reluctance (SynR) rotor, which are axially combined on the shaft. Unlike the traditional PM-assisted SynR machine (PMASynRM), the magnets are not located in the flux barriers of the SynR rotor, and therefore, the magnets and flux barriers have no more geometric confliction between them. The two rotor stacks can be circumferentially shifted to any relative angle. Clearly, the shifting angle and the axial length ratio between the two rotor stacks, together with the phase angle of the armature current vector, influence the motor performance, and their optimal design is detailed in this article. Analysis of the prototypes shows that the studied PMSynRM evidently exhibits higher torque density than the conventional PMASynRM.
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关键词
Rotors, Torque, Permanent magnets, Reluctance machines, Magnetic flux, Couplings, Steel, Axially combined rotor, maximum torque per ampere, permanent magnet (PM) machine, synchronous reluctance (SynR) machine, vector control, voltage utility
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