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

作者：Zhao, Wenliang; Xing, Fuzhen; Wang, Xiuhe; Lipo, Thomas A.; Kwon, Byung-Il^*

来源：IEEE Transactions on Magnetics, 2017, 53(6): 8104104.

DOI：10.1109/TMAG.2017.2662717

• Finite-element method (FEM)
• magnetic torque
• mises stress
• permanent-magnet (PM)-assisted synchronous reluctance machine (PM-SynRM)
• power factor
• reluctance torque
• torque ripple

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 degrees (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.

• 出版日期2017-6
• 单位山东大学