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Title: Analysis and Testing of a Coaxial Magnetic Gearbox With Flux Concentration Halbach Rotors

Abstract

Halbach array magnetic gearboxes have been discussed as being able to create high torque density. However, Halbach arrays are difficult to mechanically assemble, and often the effective air gap must be made larger to provide space for a retaining sleeve. This paper investigates here the benefits of using an additional ferromagnetic retaining pole within the Halbach array structure. It is shown that utilizing this flux concentration ferromagnetic pole improves the torque density and can also help retain the magnets in place.

Authors:
 [1];  [1];  [1];  [1];  [1]; ORCiD logo [2];  [1]
  1. Univ. of North Carolina, Charlotte, NC (United States). Dept. of Electrical and Computer Engineering
  2. Portland State Univ., Portland, OR (United States). Dept. of Electrical and Computer Engineering
Publication Date:
Research Org.:
Univ. of North Carolina, Charlotte, NC (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Wind Energy Technologies Office (EE-4WE)
OSTI Identifier:
1505685
Grant/Contract Number:  
EE0006801
Resource Type:
Accepted Manuscript
Journal Name:
IEEE Transactions on Magnetics
Additional Journal Information:
Journal Volume: 53; Journal Issue: 11; Journal ID: ISSN 0018-9464
Publisher:
Institute of Electrical and Electronics Engineers. Magnetics Group
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; analytical models; axial coupling; electromagnetic forces; Halbach rotor; radial coupling

Citation Formats

Som, Debarupa, Li, Kang, Kadel, Joshua, Wright, Jason, Modaresahmadi, Sina, Bird, Jonathan Z., and William, W. Analysis and Testing of a Coaxial Magnetic Gearbox With Flux Concentration Halbach Rotors. United States: N. p., 2017. Web. doi:10.1109/TMAG.2017.2715799.
Som, Debarupa, Li, Kang, Kadel, Joshua, Wright, Jason, Modaresahmadi, Sina, Bird, Jonathan Z., & William, W. Analysis and Testing of a Coaxial Magnetic Gearbox With Flux Concentration Halbach Rotors. United States. doi:10.1109/TMAG.2017.2715799.
Som, Debarupa, Li, Kang, Kadel, Joshua, Wright, Jason, Modaresahmadi, Sina, Bird, Jonathan Z., and William, W. Thu . "Analysis and Testing of a Coaxial Magnetic Gearbox With Flux Concentration Halbach Rotors". United States. doi:10.1109/TMAG.2017.2715799. https://www.osti.gov/servlets/purl/1505685.
@article{osti_1505685,
title = {Analysis and Testing of a Coaxial Magnetic Gearbox With Flux Concentration Halbach Rotors},
author = {Som, Debarupa and Li, Kang and Kadel, Joshua and Wright, Jason and Modaresahmadi, Sina and Bird, Jonathan Z. and William, W.},
abstractNote = {Halbach array magnetic gearboxes have been discussed as being able to create high torque density. However, Halbach arrays are difficult to mechanically assemble, and often the effective air gap must be made larger to provide space for a retaining sleeve. This paper investigates here the benefits of using an additional ferromagnetic retaining pole within the Halbach array structure. It is shown that utilizing this flux concentration ferromagnetic pole improves the torque density and can also help retain the magnets in place.},
doi = {10.1109/TMAG.2017.2715799},
journal = {IEEE Transactions on Magnetics},
number = 11,
volume = 53,
place = {United States},
year = {2017},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Citation Metrics:
Cited by: 12 works
Citation information provided by
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Figures / Tables:

Fig. 1 Fig. 1: Cross-sectional view of a 4.25:1 flux concentration Halbach rotor magnetic gearbox. The inner rotor as p1=4 pole-pairs, the outer rotor has p3=13 pole-pairs and there are $n_2$ =17 ferromagnetic segments.

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