Open AccessInfluence of stator/rotor‐pole combination on electromagnetic performance in all/alternate poles wound partitioned stator doubly salient permanent magnet machines
Author(s) -
Wu Zhongze,
Zhu Z.Q.
Publication year - 2017
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2017.0096
Subject(s) - cogging torque , stator , magnet , rotor (electric) , torque ripple , torque , torque density , control theory (sociology) , harmonics , counter electromotive force , physics , flux linkage , electromagnetic coil , computer science , engineering , direct torque control , electrical engineering , induction motor , voltage , control (management) , artificial intelligence , thermodynamics
In this study, the influence of stator/rotor‐pole combinations on electromagnetic performance in partitioned stator doubly salient permanent magnet (PS‐DSPM) machines is investigated, in terms of open‐circuit flux‐linkage, back‐electromotive force (EMF), cogging torque and on‐load torque characteristics. Analytical deduction shows that by modifying the all poles wound winding to alternate poles wound winding in the 12/11‐ and 12/13 stator/rotor‐pole PS‐DSPM machines, the fundamental distribution factor and hence the fundamental winding factor can be enhanced, resulting higher torque density. Consequently, among the 12‐stator‐pole all and alternate poles wound PS‐DSPM machines, the 10‐ and 11‐rotor‐pole machines exhibit the highest torque density, respectively. However, the 12/10‐ and 12/14‐pole alternate poles wound PS‐DSPM machines suffer from higher phase back‐EMF even harmonics, resulting larger torque ripple. The 12/10‐ and 12/11‐pole all and alternate poles wound prototypes are built and tested to verify the finite‐element analysis.