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6 February 2022 Research on train linear eddy current braking based on the influence of track surface temperature
Jia Hu, Chunjun Chen, Yuandong Liu, Long Han
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Proceedings Volume 12081, Sixth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2021); 120811E (2022) https://doi.org/10.1117/12.2623914
Event: Sixth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2021), 2021, Chongqing, China
Abstract
In order to optimize the design, control and use of linear eddy current brakes for high-speed trains, this paper uses the laws of the magnetic circuit and electromagnetic induction to derive the physical model of eddy current braking force for linear eddy current brakes for high-speed trains. Based on the law of conservation of energy, considering the temperature rise of the track surface caused by eddy current braking and the heat loss of the track itself, combining the superposition process of track surface temperature that actually affects the braking force under the time domain process, the braking force is corrected in combination with the influence of temperature, and the effect of the track surface temperature is obtained, which is closer to the actual situation. The results showed that, the new mathematical model combines with the heat influence, which can be applied below to the critical speed, when the speed exceeds the critical speed, the calculation method proposed in this paper can show the change trend of temperature and braking force.
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Jia Hu, Chunjun Chen, Yuandong Liu, and Long Han "Research on train linear eddy current braking based on the influence of track surface temperature", Proc. SPIE 12081, Sixth International Conference on Electromechanical Control Technology and Transportation (ICECTT 2021), 120811E (6 February 2022); https://doi.org/10.1117/12.2623914
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KEYWORDS
Magnetism
Temperature metrology
Mathematical modeling
Superposition
Electromagnetism
Skin
Process modeling
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