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Design and Optimization Method for a High Power Eddy Current Brake with a Magneto Isotropic Material Structure for the Use in Electrified Heavy Duty Trucks

Holtmann, Christoph (2021) Design and Optimization Method for a High Power Eddy Current Brake with a Magneto Isotropic Material Structure for the Use in Electrified Heavy Duty Trucks. In: Eurobrake 2021. FISITA. EuroBrake 2021, 17.-21. Mai 2021, Online.

Full text not available from this repository.

Official URL: https://fisita-wix.s3-eu-west-1.amazonaws.com/EuroBrake/2021/paper/2002eb2020-ebs-0173662.pdf

Abstract

In this work, an eddy current brake (ECB) with a magneto isotropic material structure that eliminates the skin effect is shown, which is optimized in this work for an electrified heavy duty truck. Due to the isotropic structure the eddy currents and the heat are distributed almost homogeneously in the material. The material structure consists of steel pins which transfer the magnetic flux from the poles through perforated aluminium sheets. Coolant flows between the aluminium sheets and the number and thickness of the sheets can be selected almost freely, thereby dramatically increasing the surface area in contact with the cooling liquid. The work focuses primarily on the design and optimization method based on a electromagnetic model of the eddy current brake and thermal models for the excitation windings. The electromagnetic model for calculating the torque as a result of the eddy currents is validated with an error of less than 10%. Further, the results of the optimization method show that in emergency braking more than 80% of the braking energy can be converted with the eddy current brake shown here at a power density of approx. 10 kW / kg.

Item URL in elib:https://elib.dlr.de/143380/
Document Type:Conference or Workshop Item (Speech)
Title:Design and Optimization Method for a High Power Eddy Current Brake with a Magneto Isotropic Material Structure for the Use in Electrified Heavy Duty Trucks
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Holtmann, ChristophChristoph.Holtmann (at) dlr.deUNSPECIFIED
Date:21 May 2021
Journal or Publication Title:Eurobrake 2021
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Editors:
EditorsEmailEditor's ORCID iD
UNSPECIFIEDFISITAUNSPECIFIED
Publisher:FISITA
Status:Published
Keywords:eddy current brake, retarder, heavy duty truck, skin effect, isotropic, thermal model, excitation windings
Event Title:EuroBrake 2021
Event Location:Online
Event Type:international Conference
Event Dates:17.-21. Mai 2021
Organizer:FISITA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Transport
HGF - Program Themes:Road Transport
DLR - Research area:Transport
DLR - Program:V ST Straßenverkehr
DLR - Research theme (Project):V - NGC Antriebssystem und Energiemanagement
Location: Stuttgart
Institutes and Institutions:Institute of Vehicle Concepts
Deposited By: Holtmann, Christoph
Deposited On:11 Oct 2021 13:40
Last Modified:11 Oct 2021 13:40

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