Analysis and optimization of back EMF waveform of a flux-switching permanent magnet motor / Wei Hua in IEEE transactions on energy conversion, Vol. 23 n°3 (Septembre 2008)  

Public ISBD [article]  inIEEE transactions on energy conversion > Vol. 23 n°3 (Septembre 2008) . - pp. 727 - 733 Titre : Analysis and optimization of back EMF waveform of a flux-switching permanent magnet motor Type de document : texte imprimé Auteurs : Wei Hua, Auteur ; Ming Cheng, Auteur ; Zhu, Z.Q., Auteur Année de publication : 2008 Article en page(s) : pp. 727 - 733 Note générale : Energy conversion Langues : Anglais (eng) Mots-clés : Finite element analysis  magnetic flux  optimisation  permanent magnet motors Résumé : Flux-switching permanent magnet (FSPM) motors have a doubly salient structure, the magnets being housed in the stator and the stator winding comprising concentrated coils. They have attracted considerable interest due to their essentially sinusoidal phase back electromotive force (EMF) waveform. However, to date, the inherent nature of this desirable feature has not been investigated in detail. Thus, a typical three-phase FSPM motor with 12 stator teeth and ten rotor poles is considered. It is found that, since there is a significant difference in the magnetic flux paths associated with the coils of each phase, this results in harmonics in the coil back EMF waveforms being cancelled, resulting in essentially sinusoidal phase back EMF waveforms. In addition, the influence of the rotor pole-arc on the phase back EMF waveform is evaluated by finite-element analysis, and an optimal pole-arc for minimum harmonic content in the back EMF is obtained and verified experimentally. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4483784&sortType%3Das [...] [article] Analysis and optimization of back EMF waveform of a flux-switching permanent magnet motor [texte imprimé] / Wei Hua, Auteur ; Ming Cheng, Auteur ; Zhu, Z.Q., Auteur . - 2008 . - pp. 727 - 733. Energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 23 n°3 (Septembre 2008) . - pp. 727 - 733 Mots-clés : Finite element analysis  magnetic flux  optimisation  permanent magnet motors Résumé : Flux-switching permanent magnet (FSPM) motors have a doubly salient structure, the magnets being housed in the stator and the stator winding comprising concentrated coils. They have attracted considerable interest due to their essentially sinusoidal phase back electromotive force (EMF) waveform. However, to date, the inherent nature of this desirable feature has not been investigated in detail. Thus, a typical three-phase FSPM motor with 12 stator teeth and ten rotor poles is considered. It is found that, since there is a significant difference in the magnetic flux paths associated with the coils of each phase, this results in harmonics in the coil back EMF waveforms being cancelled, resulting in essentially sinusoidal phase back EMF waveforms. In addition, the influence of the rotor pole-arc on the phase back EMF waveform is evaluated by finite-element analysis, and an optimal pole-arc for minimum harmonic content in the back EMF is obtained and verified experimentally. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=4483784&sortType%3Das [...]

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Comparison of stator-mounted permanent-magnet machines based on a general power equation / Jianzhong Zhang in IEEE transactions on energy conversion, Vol. 24 N° 4 (Décembre 2009)  

Public ISBD [article]  inIEEE transactions on energy conversion > Vol. 24 N° 4 (Décembre 2009) . - pp. 826 - 834 Titre : Comparison of stator-mounted permanent-magnet machines based on a general power equation Type de document : texte imprimé Auteurs : Jianzhong Zhang, Auteur ; Ming Cheng, Auteur ; Zhe, Chen, Auteur Année de publication : 2010 Article en page(s) : pp. 826 - 834 Note générale : energy conversion Langues : Anglais (eng) Mots-clés : permanent magnet machines Résumé : The stator-mounted permanent-magnet (SMPM) machines have some advantages compared with its counterparts, such as simple rotor, short winding terminals, and good thermal dissipation conditions for magnets. In this paper, a general power equation for three types of SMPM machine is introduced first, and then, power equations considering the specific topologies are derived. Based on these power equations, theoretical comparisons are carried out between various types of the SMPM machines. In all, eight topologies have been presented and benchmarked. It reveals that the flux switching permanent-magnet (PM) machine owns higher power density than the flux reversal PM machine and the doubly salient PM machine under same outer diameter. The comparison based on the power equation has established a foundation for optimizing the SMPM machines. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5291767&sortType%3Das [...] [article] Comparison of stator-mounted permanent-magnet machines based on a general power equation [texte imprimé] / Jianzhong Zhang, Auteur ; Ming Cheng, Auteur ; Zhe, Chen, Auteur . - 2010 . - pp. 826 - 834. energy conversion Langues : Anglais (eng) in IEEE transactions on energy conversion > Vol. 24 N° 4 (Décembre 2009) . - pp. 826 - 834 Mots-clés : permanent magnet machines Résumé : The stator-mounted permanent-magnet (SMPM) machines have some advantages compared with its counterparts, such as simple rotor, short winding terminals, and good thermal dissipation conditions for magnets. In this paper, a general power equation for three types of SMPM machine is introduced first, and then, power equations considering the specific topologies are derived. Based on these power equations, theoretical comparisons are carried out between various types of the SMPM machines. In all, eight topologies have been presented and benchmarked. It reveals that the flux switching permanent-magnet (PM) machine owns higher power density than the flux reversal PM machine and the doubly salient PM machine under same outer diameter. The comparison based on the power equation has established a foundation for optimizing the SMPM machines. En ligne : http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=5291767&sortType%3Das [...]

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