Fractional Slot Concentrated Winding PMSM With Consequent Pole Rotor for a Low-Speed Direct Drive: Reduction of Rare Earth Permanent Magnet

This paper deals with a 44pole-48slot fractional slot concentrated winding permanent magnet synchronous machine (FSCW PMSM) for a low-speed direct drive. Two different rotor topologies, a surface permanent magnet (SPM) rotor and a consequent pole (CP) rotor, are optimized and compared both analytically and experimentally. The experimental results confirmed that an FSCW PMSM with a CP rotor can achieve almost equivalent performance at the rated state when compared to an FSCW PMSM with an SPM rotor with 33% less permanent magnet material.

[1]  Akira Chiba,et al.  Evaluation of Magnetic Suspension Performance in a Multi-Consequent-Pole Bearingless Motor , 2011, IEEE Transactions on Magnetics.

[2]  Thomas A. Lipo,et al.  Consequent-pole permanent-magnet machine with extended field-weakening capability , 2003 .

[3]  Hany M Hasanien,et al.  Design Optimization of Transverse Flux Linear Motor for Weight Reduction and Performance Improvement Using Response Surface Methodology and Genetic Algorithms , 2010, IEEE Transactions on Energy Conversion.

[4]  T. M. Jahns,et al.  The expanding role of PM machines in direct-drive applications , 2011, 2011 International Conference on Electrical Machines and Systems.

[5]  Thomas A. Lipo,et al.  Design, Analysis, and Control of a Hybrid Field-Controlled Axial-Flux Permanent-Magnet Motor , 2010, IEEE Transactions on Industrial Electronics.

[6]  D.G. Dorrell,et al.  Basic characteristics of a consequent-pole-type bearingless motor , 2005, IEEE Transactions on Magnetics.

[7]  N. Bianchi,et al.  Design considerations for fractional-slot winding configurations of synchronous machines , 2006, IEEE Transactions on Industry Applications.

[8]  R. Wrobel,et al.  Design Considerations of a Direct Drive Brushless Machine With Concentrated Windings , 2008, IEEE Transactions on Energy Conversion.

[9]  Z. Q. Zhu,et al.  Fractional slot permanent magnet brushless machines and drives for electric and hybrid propulsion systems , 2011 .

[10]  J A Güemes,et al.  Torque Analysis in Permanent-Magnet Synchronous Motors: A Comparative Study , 2011, IEEE Transactions on Energy Conversion.

[11]  Ayman M. El-Refaie,et al.  Fractional-Slot Concentrated-Windings Synchronous Permanent Magnet Machines: Opportunities and Challenges , 2010, IEEE Transactions on Industrial Electronics.

[12]  Jung-Pyo Hong,et al.  Optimal design of slotless-type PMLSM considering multiple responses by response surface methodology , 2006, IEEE Transactions on Magnetics.

[13]  Erik Ostermann,et al.  Design Of Brushless Permanent Magnet Motors , 2016 .

[14]  Dae-Hyun Koo,et al.  Fractional Slot Concentrated Winding Permanent Magnet Synchronous Machine With Consequent Pole Rotor for Low Speed Direct Drive , 2012, IEEE Transactions on Magnetics.

[15]  Teck-Seng Low,et al.  Robust design for torque optimization using response surface methodology , 2002 .