2026-09-19T11:40:21Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/1199372022-01-13T07:54:05Zcom_1721.1_7582com_1721.1_7581col_1721.1_131024
Skylar Tibbits.
Suzuki, Aya K
Massachusetts Institute of Technology. Department of Mechanical Engineering.
Massachusetts Institute of Technology. Department of Mechanical Engineering
2019-01-11T16:03:50Z
2019-01-11T16:03:50Z
2018
2018
http://hdl.handle.net/1721.1/119937
1079910510
Thesis: S.B., Massachusetts Institute of Technology, Department of Mechanical Engineering, 2018.
Cataloged from PDF version of thesis.
Includes bibliographical references (page 37).
The coils of alternating current (AC) motors experience back electromotive force (EMF) at high rotational speeds, which acts against applied voltage and drops motor efficiency steeply. By reducing the magnetic flux surrounding the coil of the stator, back EMF can be reduced and motor efficiency can be maintained at any rotational speed. Several prototypes that take advantage of centrifugal force and moving motor components are created; the prototypes prove that high overall magnetic permeability is achieved at low rotational speeds, and low overall magnetic permeability is achieved at high rotational speeds. In the more successful motor prototype, magnetic flux simulation results show a 43.5% reduction in peak values of back EMF.
by Aya K. Suzuki.
S.B.
37 pages
eng
Massachusetts Institute of Technology
MIT theses are protected by copyright. They may be viewed, downloaded, or printed from this source but further reproduction or distribution in any format is prohibited without written permission.
http://dspace.mit.edu/handle/1721.1/7582
Mechanical Engineering.
Rotational speed dependent motor properties
Thesis
application/pdf
false
Publication
unknown
unknown
<Publication xmlns="https://www.openaire.eu/cerif-profile/1.1/" id="e6ac08e6-948a-4f23-a32c-8c8536620973">
<Type xmlns="https://www.openaire.eu/cerif-profile/vocab/COAR_Publication_Types">http://purl.org/coar/resource_type/c_1843</Type>
<Language>eng</Language>
<Title>Rotational speed dependent motor properties</Title>
<PublishedIn>
<Publication>
</Publication>
</PublishedIn>
<PublicationDate>2018</PublicationDate>
<Authors>
<Author>
<DisplayName>Suzuki, Aya K</DisplayName>
<Affiliation>
<OrgUnit>
</OrgUnit>
</Affiliation>
</Author>
</Authors>
<Editors>
</Editors>
<Publishers>
<Publisher>
<DisplayName>Massachusetts Institute of Technology</DisplayName>
<OrgUnit />
</Publisher>
</Publishers>
<License>http://dspace.mit.edu/handle/1721.1/7582</License>
<Keyword>Mechanical Engineering.</Keyword>
<Abstract>The coils of alternating current (AC) motors experience back electromotive force (EMF) at high rotational speeds, which acts against applied voltage and drops motor efficiency steeply. By reducing the magnetic flux surrounding the coil of the stator, back EMF can be reduced and motor efficiency can be maintained at any rotational speed. Several prototypes that take advantage of centrifugal force and moving motor components are created; the prototypes prove that high overall magnetic permeability is achieved at low rotational speeds, and low overall magnetic permeability is achieved at high rotational speeds. In the more successful motor prototype, magnetic flux simulation results show a 43.5% reduction in peak values of back EMF.</Abstract>
<Access xmlns="http://purl.org/coar/access_right"
>
</Access>
</Publication>