Results 181 to 190 of about 12,948 (226)
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Analysis of an Eddy-Current Brake
IEEE Transactions on Power Apparatus and Systems, 1965The retarding torque of an eddy-current brake is calculated as function of the angular velocity of the rotor and of the stator dc magnetizing current. The electromagnetic field components are found in the rotor medium by solving the field equations. Integration of the power flow vector E X H over the rotor surface yields the total retarding power of ...
D. Gonen, S. Stricker
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Characteristics of Eddy Current Braking
ASME 2010 Rail Transportation Division Fall Technical Conference, 2010Eddy current braking has long held the promise of frictionless braking of railroad trains. The advantages of eliminating friction brake equipment are particularly valuable to high speed rail passenger service. Tests over the last decade have identified a number of controllable challenges to implementing eddy current brakes involving the vehicle, track,
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Eddy current brake with two pole pairs
COMPEL - The international journal for computation and mathematics in electrical and electronic engineering, 2009PurposeThe purpose of this paper is to derive a force‐velocity characteristic for an eddy current brake with minor computational effort.Design/methodology/approachThe speed range is split into two domains. While in the low‐speed domain it is possible to achieve a closed form expression for the force‐velocity characteristic in the high‐speed region ...
Eckhard Baum, Stefan Eberhardt
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Research on Braking Characteristics of Rail Eddy Current Brake with AC Excitation
2021 13th International Symposium on Linear Drives for Industry Applications (LDIA), 2021This paper describes an eddy current brake (ECB) device consisting of AC excitation and ferromagnetic railway. The braking force can be generated with non-contact and low noise caused by the reaction between the eddy current and excitation current. In this paper, the structure of the brake is introduced detailedly.
Yongzeng Li +5 more
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THE DESIGN OF EDDY-CURRENT MAGNET BRAKES
Transactions of the Canadian Society for Mechanical Engineering, 2011The eddy-current is created by the relative motion between a magnet and a metal (or alloy) conductor. The current induces the reverse magnetic field and results in the deceleration of motion. The proposed mechanism implements this phenomenon in developing a braking system.
Der-Ming Ma, Jaw-Kuen Shiau
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Analysis of eddy-current brakes for high speed railway
IEEE Transactions on Magnetics, 1998The analysis of eddy-current brakes for a high-speed railway is described that shows the operational characteristics of the brake as function of the train speed up to 300 km/hr and of the DC magnetizing current of magnetic poles. Braking forces are generated by employing a DC excitation field for the poles moving 7 mm above the rails.
null Pei-Jen Wang +1 more
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Investigation on Eddy Current Braking Systems – A Review
Applied Mechanics and Materials, 2014The changing magnetic field will induce eddy currents in the conductor. These currents will dissipate energy in the conductor and generate drag force. It is found that Aluminium is the best material as conductor compared to Copper and Zinc. Also, it is found that the larger thickness of disc, more number of turns of electromagnet and higher electrical ...
G.L. Anantha Krishna, K.M. Sathish Kumar
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A laboratory activity on the eddy current brake
European Journal of Physics, 2012The aim of this paper is to introduce a simple and low-cost experimental setup that can be used to study the eddy current brake, which considers the motion of a sliding magnet on an inclined conducting plane in terms of basic physical principles. We present a set of quantitative experiments performed to study the influence of the geometrical and ...
J A Molina-Bolívar, A J Abella-Palacios
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Analysis of eddy-current brakes with nonmagnetic rotors
Proceedings of the Institution of Electrical Engineers, 1977The field distribution when a thin conducting sheet moves with constant velocity between two rectangular and infinitely permeable pole pieces of an electromagnet is obtained by conformal mapping, after reduction of the problem to two dimensions. This result is used in predicting the force/speed and flux/speed characteristics of eddy-current brakes with
K. Venkataratnam, D. Ramachandra Raju
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Magnetic flux distribution and braking torque of a grooved eddy current brake
2020 2nd International Conference on Computer and Information Sciences (ICCIS), 2020Motorcycles generally require an optimal braking system, eddy current brake (ECB) can be used as an alternative to conventional braking systems. Design unipolar axial ECB with an electromagnet used in this research. ECB performance can be influenced by some factor, one of them is changing the form of the surface of a conductor.
U Ubaidillah +4 more
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