Modeling of a Dual Air-Gap Liquid-Cooled Eddy Current Retarder Considering Transient Permeability

This paper proposes a model for the electromagnetic performance of the dual air-gap liquid-cooled eddy current retarder (DAL-ECR) considering the transient permeability. First, the structure and working principle of the DAL-ECR are introduced. Next, the analysis model of the static air-gap flux dens...

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Main Authors: Wenguang Guo, Bin Yan, Desheng Li
Format: Article
Language:English
Published: MDPI AG 2023-07-01
Series:World Electric Vehicle Journal
Subjects:
Online Access:https://www.mdpi.com/2032-6653/14/7/182
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author Wenguang Guo
Bin Yan
Desheng Li
author_facet Wenguang Guo
Bin Yan
Desheng Li
author_sort Wenguang Guo
collection DOAJ
description This paper proposes a model for the electromagnetic performance of the dual air-gap liquid-cooled eddy current retarder (DAL-ECR) considering the transient permeability. First, the structure and working principle of the DAL-ECR are introduced. Next, the analysis model of the static air-gap flux density considering the flux leakage and end effect is established based on the piecewise function method and the magnetic equivalent circuit (MEC). Then, based on the skin effect of the electromagnetic field in the retarder, an iterative method for solving the transient permeability of the stator is proposed. According to Faraday’s and Ampere’s laws, the analysis model of the static air-gap flux density, and the transient permeability, the analysis model of the transient air-gap flux density is established. The braking torque of the DAL-ECR is then calculated while taking the actual path of the eddy current and the skin effect on the permeability of the stator into consideration. Finally, the calculation accuracy of the model was verified by the finite element method (FEM) and the bench test.
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spelling doaj.art-8fe69fe6d5014c31b879c51ada5617e92023-11-18T21:48:57ZengMDPI AGWorld Electric Vehicle Journal2032-66532023-07-0114718210.3390/wevj14070182Modeling of a Dual Air-Gap Liquid-Cooled Eddy Current Retarder Considering Transient PermeabilityWenguang Guo0Bin Yan1Desheng Li2School of Mechanical Engineering, Anyang Institute of Technology, Anyang 455000, ChinaSchool of Mechanical Engineering, Anyang Institute of Technology, Anyang 455000, ChinaCollege of Mechanical Engineering and Applied Electronic Technology, Beijing University of Technology, Beijing 100124, ChinaThis paper proposes a model for the electromagnetic performance of the dual air-gap liquid-cooled eddy current retarder (DAL-ECR) considering the transient permeability. First, the structure and working principle of the DAL-ECR are introduced. Next, the analysis model of the static air-gap flux density considering the flux leakage and end effect is established based on the piecewise function method and the magnetic equivalent circuit (MEC). Then, based on the skin effect of the electromagnetic field in the retarder, an iterative method for solving the transient permeability of the stator is proposed. According to Faraday’s and Ampere’s laws, the analysis model of the static air-gap flux density, and the transient permeability, the analysis model of the transient air-gap flux density is established. The braking torque of the DAL-ECR is then calculated while taking the actual path of the eddy current and the skin effect on the permeability of the stator into consideration. Finally, the calculation accuracy of the model was verified by the finite element method (FEM) and the bench test.https://www.mdpi.com/2032-6653/14/7/182air-gap flux densityeddy current brakingtransient permeabilityliquid cooled
spellingShingle Wenguang Guo
Bin Yan
Desheng Li
Modeling of a Dual Air-Gap Liquid-Cooled Eddy Current Retarder Considering Transient Permeability
World Electric Vehicle Journal
air-gap flux density
eddy current braking
transient permeability
liquid cooled
title Modeling of a Dual Air-Gap Liquid-Cooled Eddy Current Retarder Considering Transient Permeability
title_full Modeling of a Dual Air-Gap Liquid-Cooled Eddy Current Retarder Considering Transient Permeability
title_fullStr Modeling of a Dual Air-Gap Liquid-Cooled Eddy Current Retarder Considering Transient Permeability
title_full_unstemmed Modeling of a Dual Air-Gap Liquid-Cooled Eddy Current Retarder Considering Transient Permeability
title_short Modeling of a Dual Air-Gap Liquid-Cooled Eddy Current Retarder Considering Transient Permeability
title_sort modeling of a dual air gap liquid cooled eddy current retarder considering transient permeability
topic air-gap flux density
eddy current braking
transient permeability
liquid cooled
url https://www.mdpi.com/2032-6653/14/7/182
work_keys_str_mv AT wenguangguo modelingofadualairgapliquidcoolededdycurrentretarderconsideringtransientpermeability
AT binyan modelingofadualairgapliquidcoolededdycurrentretarderconsideringtransientpermeability
AT deshengli modelingofadualairgapliquidcoolededdycurrentretarderconsideringtransientpermeability