Open AccessFull‐period suspension force accurate modelling for a novel bearingless switched reluctance motor
Author(s) -
Yuan Ye,
Ma Yiqing,
Xu Jie,
Yang Fan,
Xie Kai
Publication year - 2019
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2019.2358
Subject(s) - switched reluctance motor , suspension (topology) , control theory (sociology) , electromagnetic suspension , reluctance motor , torque , computer science , engineering , control engineering , physics , rotor (electric) , mechanical engineering , magnet , mathematics , control (management) , artificial intelligence , homotopy , pure mathematics , thermodynamics
In the traditional bearingless switched reluctance motor (BSRM) system, the electromagnetic coupling between the torque system and suspension system is unavoidable. In this Letter, the present BSRM has the advantages of electromagnetic decouple with independent torque‐suspension magnetic circuit design. However, the further in‐depth study shows that the BSRM has an obvious suspension force fluctuation according to its asymmetry structure. Thus, it is necessary to build an accurate suspension force mathematical model considering commutation ripple. In this frame, a magnetic field segmentation method is proposed and the accurate suspension force model is built with Maxwell stress method and its reliability and precision are verified, modified based on finite element analysis.