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3-D analytic based modeling of an electrodynamic wheel and the performance of electrodynamic wheels in series for urban transportation

Author: Dheeraj Bobba; University of North Carolina at Charlotte. Department of Electrical and Computer Engineering.
Publisher: ©2011.
Dissertation: M.S.E.E. University of North Carolina at Charlotte 2011
Edition/Format:   Thesis/dissertation : Thesis/dissertation : Manuscript   Archival Material : English
Summary:
When a radially magnetized rotor is simultaneously rotated and translationally moved above a conductive guideway, a time-varying magnetic field is created in the air-gap which induces eddy currents in the guideway. These eddy currents can simultaneously create suspension and propulsion or braking forces required for a maglev system. The static fields and transient forces created by this moving rotor, termed an  Read more...
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Details

Material Type: Thesis/dissertation, Manuscript
Document Type: Book, Archival Material
All Authors / Contributors: Dheeraj Bobba; University of North Carolina at Charlotte. Department of Electrical and Computer Engineering.
OCLC Number: 841610252
Notes: UNC Charlotte Libraries notes:
Thesis (M.S.) -- The University of North Carolina at Charlotte.
Description: 96 leaves : illustrations ; 29 cm
Other Titles: Three-D analytic based modeling of an electrodynamic wheel and the performance of electrodynamic wheels in series for urban transportation
Three-D analytic based modeling of an electrodynamic wheel and the performance of electrodynamic wheels in series for urban transportation.
Responsibility: by Dheeraj Bobba.
Local System Bib Number:
.b3243912x

Abstract:

When a radially magnetized rotor is simultaneously rotated and translationally moved above a conductive guideway, a time-varying magnetic field is created in the air-gap which induces eddy currents in the guideway. These eddy currents can simultaneously create suspension and propulsion or braking forces required for a maglev system. The static fields and transient forces created by this moving rotor, termed an electrodynamic wheel, have been modeled using both 2-D and 3-D finite element analysis models. A 3-D analytic based generalized source field model for a flux focusing Halbach rotor has been developed using a fictitious magnetic charge method. The model has been verified by comparing the analytic source field with the finite element analysis models and an experimental Halbach rotor. While this electrodynamic wheel maglev system is perhaps optimum for high-speed operation, the novel approach of using electrodynamic wheels in series is proposed and analyzed for low speed applications using a 2-D current sheet approach. The parameters that affect the performance are investigated and an effort is made to optimize the design. The base vehicle specifications and a velocity profile for a short low-speed travel (<25m/s or 90km/h) were obtained and the steady-state operating characteristics of the maglev system were determined.
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