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Eddy Current Brake with Two Layer Structure Calculation and Characterization of Braking Performance

Title
Eddy Current Brake with Two Layer Structure Calculation and Characterization of Braking Performance
Author
이주
Keywords
Braking torque; conductivity; eddy current brake; eddy current loss; magnetic material
Issue Date
2017-04
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Citation
IEEE TRANSACTIONS ON MAGNETICS, v. 53, no. 11, Article no. 8110205
Abstract
This paper presents a new method for calculating the braking force of a drum-type eddy current brake with a two-layer structure. The drum-type eddy current brake should have a structure that improves the braking force by applying a material with high conductivity inside the drum because the eddy current loss generated from the drum is used as the braking force. In addition, because the eddy current brake operates at various speeds while braking the vehicle, it is necessary to grasp the braking force according to the speed. Furthermore, because the material of the drum is composed of non-laminated iron having conductivity, the skin effect and the armature reaction phenomenon appear, and the skin depth and the air-gap flux density are different depending on the braking speed. In this paper, the value of the eddy current loss of the eddy current brake with a copper coating inside the drum is newly presented and compared with the finite-element analysis results. In addition, the change in the speed torque curve according to the conductivity value of the drum and inner coating material are shown. Finally, an experiment was conducted to compare and verify the characteristic curve of the eddy current brake obtained from the newly derived equations.
URI
https://ieeexplore.ieee.org/document/7933258https://repository.hanyang.ac.kr/handle/20.500.11754/113608
ISSN
0018-9464; 1941-0069
DOI
10.1109/TMAG.2017.2707555
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ELECTRICAL AND BIOMEDICAL ENGINEERING(전기·생체공학부) > Articles
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