Analysis and evaluation of novel rotor permanent magnet flux-switching machine for EV and HEV applications

作者：Su, Peng; Hua, Wei^*; Zhang, Gan; Chen, Zhe; Cheng, Ming

来源：IET Electric Power Applications, 2017, 11(9): 1610-1618.

DOI：10.1049/iet-epa.2017.0182

• finite element analysis
• hybrid electric vehicles
• rotors
• permanent magnet machines
• stators
• brushless machines
• torque
• magnetic flux
• rotor permanent magnet flux switching machine evaluation
• rotor permanent magnet flux switching machine analysis
• EV application
• HEV application
• stator-permanent magnet flux-switching machine
• SPM-FS machine
• stator teeth
• armature winding
• RPM-FS brushless machine
• stator tooth saturation level
• end-part winding length
• interior permanent magnet machine

To relieve the serious saturation in stator teeth of stator-permanent-magnet flux-switching (SPM-FS) machines due to the co-existence of magnets and armature windings in stator, this study proposes and analyses a novel rotor-permanent magnet flux-switching (RPM-FS) brushless machine. Different from the conventional SPM-FS machines, the magnets are removed from stator to rotor, and magnetised in a unique direction, resulting in a significant alleviation of stator tooth saturation level for the RPM-FS machines. The concentrated armature windings are still wound around stator teeth with an even shorter end-part winding length due to the absence of magnets. To evaluate the advantages and disadvantages of RPM-FS machines, a comprehensive comparison between a RPM-FS machine, a SPM-FS machine, and an interior permanent magnet machine used in Toyota-Prius 2004 hybrid electric vehicle, is conducted and the electromagnetic performances of three machines are investigated by finite element analysis. The predicted results indicate the proposed RPM-FS machine exhibits the largest power density, greatest torque capability, highest efficiency under rated operation, and improved flux-weakening ability. Therefore, the RPM-FS machine is a promising candidate for EV and hybrid electric vehicles applications especially for direct driven systems where the superior overloaded performance is crucial.

• 出版日期2017-11
• 单位东南大学