Design and Analysis of a Novel PM-Assisted Synchronous Reluctance Machine With Axially Integrated Magnets by the Finite-Element Method

This paper presents the design and analysis of a novel permanent-magnet (PM)-assisted synchronous reluctance machine (PMA-SynRM) with axially integrated magnets for improving machine performance by using a finite-element method (FEM). The proposed PMA-SynRM features a simple structure with high perf...

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Bibliographic Details
Published in:IEEE transactions on magnetics 2017-06, Vol.53 (6), p.1-4
Main Authors: Wenliang Zhao, Fuzhen Xing, Xiuhe Wang, Lipo, Thomas A., Byung-il Kwon
Format: Article
Language:English
Subjects:
Atmospheric modeling
Design analysis
Deterioration
Finite element analysis
Finite element method
Finite-element method (FEM)
Magnetic flux
magnetic torque
Magnetism
Magnetomechanical effects
Mathematical analysis
mises stress
Motors
Permanent magnets
permanent-magnet (PM)-assisted synchronous reluctance machine (PM-SynRM)
Power factor
Reluctance
reluctance torque
Ribs
Ribs (structural)
Rotors
Stress
Stress analysis
Synchronous machines
Torque
torque ripple
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Summary:This paper presents the design and analysis of a novel permanent-magnet (PM)-assisted synchronous reluctance machine (PMA-SynRM) with axially integrated magnets for improving machine performance by using a finite-element method (FEM). The proposed PMA-SynRM features a simple structure with high performance by incorporating the advantages of a SynRM and a surface-mounted PM machine (SPMM). In particular, the rotor parts of the SynRM and SPMM are assembled to make the "q-axis" located 45° (elec.) from the d-axis. Thus, the magnetic torque and reluctance torque of the proposed PMA-SynRM reach the maximum values at the same current phase angle, for efficient production of the total torque. To highlight the advantages of the proposed PMA-SynRM, a conventional PMA-SynRM is adopted for comparison under the same operating conditions. The FEM analysis results finally demonstrate that the proposed PMA-SynRM has a higher total torque and power factor, as well as greatly reduced torque ripple, when compared to the conventional PMA-SynRM with the same magnet amounts. In addition, the Mises stress analysis indicates that the configuration of the proposed PMA-SynRM exhibits the advantage of avoiding stress deterioration in the rotor ribs.
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2017.2662717