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Comparative analysis of partitioned stator flux reversal PM machine and magnetically geared machine operating in Stator-PM and Rotor-PM modes
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Wu, Zhongze, Zhu, Zi-Qiang and Zhan, Hanlin (2017) Comparative analysis of partitioned stator flux reversal PM machine and magnetically geared machine operating in Stator-PM and Rotor-PM modes. IEEE Transactions on Energy Conversion, 32 (3). 903 -917. doi:10.1109/TEC.2017.2693028 ISSN 0885-8969.
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Official URL: http://dx.doi.org/10.1109/TEC.2017.2693028
Abstract
In this paper, the partitioned stator flux reversal permanent magnet (PM) (PS-FRPM) machine and the conventional magnetically geared (MG) machine operating in both stator-PM (SPM) and rotor-PM (RPM) modes are comparatively analyzed in terms of electromagnetic performance to provide design guides for a MG machine regarding: (a) a SPM or RPM type machine and (b) a higher or lower gear ratio machine. It is found that a SPM type machine is recommended, since both PS-FRPM and MG machines operating in SPM modes have a higher phase back-EMF and hence torque than their RPM counterparts, respectively, as a result of a similar phase flux-linkage but a higher electric frequency since the iron piece number is larger than the PM pole-pair number. Moreover, a smaller gear ratio machine is preferred from the perspective of a higher power factor and hence a lower inverter power rating, as the conventional MG machines with higher gear ratios suffer from larger flux-leakage, higher synchronous reactance and hence lower power factors, as well as higher iron losses, than the PS-FRPM machines. However, higher gear ratio machines feature lower cogging torques and torque ripples due to the smaller difference between the PM pole-pair number and iron piece number. Both prototypes of PS-FRPM machine operating in SPM mode and MG machine operating in RPM mode are built and tested to verify the FE predicted results.
Item Type: | Journal Article | ||||||||
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Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TL Motor vehicles. Aeronautics. Astronautics |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
Library of Congress Subject Headings (LCSH): | Permanent magnet motors., Electric motors., Electric vehicles. | ||||||||
Journal or Publication Title: | IEEE Transactions on Energy Conversion | ||||||||
Publisher: | IEEE | ||||||||
ISSN: | 0885-8969 | ||||||||
Official Date: | September 2017 | ||||||||
Dates: |
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Volume: | 32 | ||||||||
Number: | 3 | ||||||||
Page Range: | 903 -917 | ||||||||
DOI: | 10.1109/TEC.2017.2693028 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 8 June 2017 | ||||||||
Date of first compliant Open Access: | 8 June 2017 |
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