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Title: Investigating the Performance of a Fully Laminated Flux-Focusing Magnetic Gearbox

Abstract

This paper presents here the design investigation and experimental testing of a flux-focusing magnetic gearbox with a fully laminated rotor structure. The unique feature of this flux-focusing magnetic gearbox design is that the three rotors are each made of a single lamination stack, and the central modulation structure is retained in place without the use of a resin filler such as epoxy. Ferromagnetic bridges are used to connect individual pole pieces together. It is shown that the use of the ferromagnetic bridges reduces the calculated torque density from 156 Nm/L to 139 Nm/L (a reduction of 11%). The experimentally measured torque density is, however, only 97 Nm/L. The reason for this discrepancy is associated with the demagnetization of the magnets.

Authors:
 [1];  [1];  [1];  [2];  [3];  [2]
  1. Univ. of North Carolina, Charlotte, NC (United States). Dept. of Electrical and Computer Engineering
  2. Univ. of North Carolina, Charlotte, NC (United States). Dept. of Engineering Technology
  3. Portland State Univ., Portland, OR (United States). Lab. for Electromagnetic Energy Conversion and Control. 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:
1505684
Grant/Contract Number:  
EE0006801
Resource Type:
Accepted Manuscript
Journal Name:
Progress in Electromagnetics Research C
Additional Journal Information:
Journal Volume: 87; Journal ID: ISSN 1937-8718
Publisher:
EMW Publishing
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Li, Kang, Uppalapati, Krishna Kiran, Wright, Jason, Kadel, Joshua, Bird, Jonathan, and Willimas, Wesley. Investigating the Performance of a Fully Laminated Flux-Focusing Magnetic Gearbox. United States: N. p., 2018. Web. doi:10.2528/PIERC18062509.
Li, Kang, Uppalapati, Krishna Kiran, Wright, Jason, Kadel, Joshua, Bird, Jonathan, & Willimas, Wesley. Investigating the Performance of a Fully Laminated Flux-Focusing Magnetic Gearbox. United States. doi:10.2528/PIERC18062509.
Li, Kang, Uppalapati, Krishna Kiran, Wright, Jason, Kadel, Joshua, Bird, Jonathan, and Willimas, Wesley. Mon . "Investigating the Performance of a Fully Laminated Flux-Focusing Magnetic Gearbox". United States. doi:10.2528/PIERC18062509. https://www.osti.gov/servlets/purl/1505684.
@article{osti_1505684,
title = {Investigating the Performance of a Fully Laminated Flux-Focusing Magnetic Gearbox},
author = {Li, Kang and Uppalapati, Krishna Kiran and Wright, Jason and Kadel, Joshua and Bird, Jonathan and Willimas, Wesley},
abstractNote = {This paper presents here the design investigation and experimental testing of a flux-focusing magnetic gearbox with a fully laminated rotor structure. The unique feature of this flux-focusing magnetic gearbox design is that the three rotors are each made of a single lamination stack, and the central modulation structure is retained in place without the use of a resin filler such as epoxy. Ferromagnetic bridges are used to connect individual pole pieces together. It is shown that the use of the ferromagnetic bridges reduces the calculated torque density from 156 Nm/L to 139 Nm/L (a reduction of 11%). The experimentally measured torque density is, however, only 97 Nm/L. The reason for this discrepancy is associated with the demagnetization of the magnets.},
doi = {10.2528/PIERC18062509},
journal = {Progress in Electromagnetics Research C},
number = ,
volume = 87,
place = {United States},
year = {2018},
month = {9}
}

Journal Article:
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