Journal
IEEE TRANSACTIONS ON MAGNETICS
Volume 50, Issue 11, Pages -Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TMAG.2014.2329861
Keywords
Direct drive; double stator; finite element method (FEM); power factor; vernier machines
Funding
- Ministry of Education, National Research Foundation of Korea
- Ministry of Science, ICT and Future Planning, National Research Foundation of Korea [NRF-2013R1A2A2A01068022]
- National Research Foundation of Korea [2013R1A2A2A01068022, 22A20130012328] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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This paper proposes a novel double-stator axial-flux spoke-type permanent magnet vernier machine, which has a high torque density feature as well as a high-power factor at low speed for direct-drive systems. The operation principle and basic design procedure of the proposed machine are presented and discussed. The 3-D finite element method (3-D-FEM) is utilized to analyze its magnetic field and transient output performance. Furthermore, the analytical method and a simplified 2-D-FEM are also developed for the machine basic design and performance evaluation, which can effectively reduce the modeling and simulation time of the 3-D-FEM and achieve an adequate accuracy.
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