Analysis and evaluation of novel rotor permanent magnet flux‐switching machine for EV and HEV applications. Issue 9 (11th August 2017)

• Record Type: Journal Article
• Authors: Su, Peng; Hua, Wei; Zhang, Gan; Chen, Zhe; Cheng, Ming
• Is Part Of: IET electric power applications. Volume 11:Issue 9(2017)
• Page Start: 1610
• Page End: 1618
• Publication Date: 2017-08-11
• Subjects: 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 -- Toyota‐Prius 2004 hybrid electric vehicle -- finite element analysis -- power density -- torque capability -- flux‐weakening ability -- direct driven systems; Electric power -- Periodicals; Electric power systems -- Periodicals; 621.305
• DOI: 10.1049/iet-epa.2017.0182
• Languages: English
• ISSNs: 1751-8660

Abstract

Abstract : 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.