Open AccessReducing cogging torque of 6/4 pole FSPM machine by optimising parameters of chamfering and flange rotor pole shape without skewing teeth
Author(s) -
Xiu Jie,
Wang Shiyu,
Xiu Yan
Publication year - 2019
Publication title -
iet electric power applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.815
H-Index - 97
eISSN - 1751-8679
pISSN - 1751-8660
DOI - 10.1049/iet-epa.2018.5435
Subject(s) - cogging torque , torque , rotor (electric) , torque ripple , control theory (sociology) , magnet , flange , finite element method , engineering , computer science , direct torque control , physics , structural engineering , mechanical engineering , electrical engineering , induction motor , voltage , control (management) , artificial intelligence , thermodynamics
Due to the doubly salient structure, high magnetic flux density in the air gap and low pole number, cogging torque of 6/4 pole flux‐switching permanent magnet (FSPM) machine is seriously high. In some cases, it may cause this machine hard to start up and serious torque ripple. So, reducing the cogging torque of 6/4 pole FSPM machine to a certain low extent is important to keep it work properly. To reduce cogging torque, a chamfering and flange rotor pole shape is proposed to reduce the cogging torque of 6/4 pole FSPM machine without skewing teeth. The key dimensions of the proposed rotor pole shape have been optimised by analytical methods and simulation based on finite‐element analysis. The effectiveness of the proposed method has been verified by experimental results. The effect of the proposed rotor pole shape method on back‐electromagnetic force and average electromagnetic torque has also been investigated.