Modeling single and double stator axial eddy current brakes considering current displacement, magnetic leakage, fringing and saturation using coupled electric and magnetic equivalent circuits

Meier, Stefan; Hahn, Ingo

doi:10.1109/iecon.2014.7048582

Cited by 4 publications

(3 citation statements)

References 26 publications

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“…The magnitude of the eddy currents is influenced by the presence of magnetic fields and electric fields [25][26][27][28][29][30][31][32][33][34][35]:…”

Section: Governing Equationsmentioning

confidence: 99%

Application of Multiple Unipolar Axial Eddy Current Brakes for Lightweight Electric Vehicle Braking

et al. 2020

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The braking system in a vehicle has the main role of slowing down the speed or stopping the moving vehicle. Compared to mechanical braking, which utilizes friction, non-contact braking has several advantages, including longer lifetime and less maintenance. One form of non-contact braking systems is the eddy current brake (ECB), an electric braking system that employs eddy currents to operate. This research focuses on the impact of magnetic field sources used in the ECB. In addition, the number of magnetic field sources is also observed. In order to achieve an ECB design that can be easily applied in any types of vehicles, including motorcycles and compact cars, a compact ECB design with an excellent braking torque is required. In this study, a compact design of the ECB is obtained by distributing the required braking torque from the disc brake into multiple electromagnets. Finite element method-based modeling has been performed to study ECB parameters, including the number of coil winding, the number of electromagnets, and the electric current. The results of this study show that the developed compact ECB could produce 93.66% of the torque required for braking.

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“…The magnitude of the eddy currents is influenced by the presence of magnetic fields and electric fields [25][26][27][28][29][30][31][32][33][34][35]:…”

Section: Governing Equationsmentioning

confidence: 99%

Application of Multiple Unipolar Axial Eddy Current Brakes for Lightweight Electric Vehicle Braking

et al. 2020

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“…The expression of the braking torque was derived using the Lorentz force formula under consideration of the armature influence [7,8]. Meier et al used the coupling calculation of equivalent circuit and magnetic circuit to derive the analytical model of axial electrical excitation ECBS [9]. Srivastava et al have first derived the expression of the braking force using the Fourier transform method.…”

Section: Introductionmentioning

confidence: 99%

“…Meier et al. used the coupling calculation of equivalent circuit and magnetic circuit to derive the analytical model of axial electrical excitation ECBS [9]. Srivastava et al.…”

Section: Introductionmentioning

confidence: 99%

Analysis of linear eddy current brakes for maglev train using an equivalent circuit method

Liu

Jin

et al. 2021

IET Electrical Systems in Transportation

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An equivalent circuit method (ECM) is developed to analyse the linear eddy current braking system (ECBS) of the maglev train. The distribution of eddy current in the rail is represented by dividing the rail into a series of small segments in which the current is assumed to be uniform. Each segment is described as an equivalent circuit with parameters of resistance and inductance. The circuit parameters, such as self-inductance and mutual inductance, are evaluated from the geometry parameters using an analytic method. The state equation derived from the circuit equations and the Newton's equations is solved using the Runge-Kutta method, from which the dynamic performance of the linear ECBS can be obtained. The accuracy and efficiency of the proposed ECM are verified by comparing the results with the one obtained from the finite element method. By adopting the developed ECM, the influence of parameters, such as speed, the exciting current and air gap of the linear ECBS, are analysed. The variation law of the linear ECBS with parameters is roughly grasped.This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

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Nonlinear Multidisciplinary Design Approach for Axial-Flux Eddy Current Brakes

Güleç

Aydın

Nerg

et al. 2019

IEEE Trans. Energy Convers.

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Modeling single and double stator axial eddy current brakes considering current displacement, magnetic leakage, fringing and saturation using coupled electric and magnetic equivalent circuits

Cited by 4 publications

References 26 publications

Application of Multiple Unipolar Axial Eddy Current Brakes for Lightweight Electric Vehicle Braking

Application of Multiple Unipolar Axial Eddy Current Brakes for Lightweight Electric Vehicle Braking

Analysis of linear eddy current brakes for maglev train using an equivalent circuit method

Nonlinear Multidisciplinary Design Approach for Axial-Flux Eddy Current Brakes

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