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Zefeng Yang, Chun Huang, Yunfeng Luo, Zhiwen Huang, Langyu Xia, Huan Zhang, Shangang Zhou, Keliang Dong, Wenfu Wei. Regulation on the pantograph-catenary arc by alternating transverse magnetic field[J]. Plasma Science and Technology. DOI: 10.1088/2058-6272/adab4a
Citation: Zefeng Yang, Chun Huang, Yunfeng Luo, Zhiwen Huang, Langyu Xia, Huan Zhang, Shangang Zhou, Keliang Dong, Wenfu Wei. Regulation on the pantograph-catenary arc by alternating transverse magnetic field[J]. Plasma Science and Technology. DOI: 10.1088/2058-6272/adab4a

Regulation on the pantograph-catenary arc by alternating transverse magnetic field

  • The pantograph-catenary arc has persistently posed a challenge, impeding the advancement of high-speed rail systems. As the velocity of high-speed trains continues to escalate and environmental conditions become increasingly complex, the phenomenon of pantograph-catenary arc drifting has intensified, thereby jeopardizing the safe operation of the trains. To enhance the stability of the pantograph-catenary arc, this paper proposes a method to regulate arc using an AC transverse magnetic field (ATMF) and investigates the regulation law of ATMF on an arc in airflow environment. The results indicate that ATMF can effectively maintain arc stability, with stability enhancing as magnetic field frequency increases up to a threshold value. In an airflow environment, the stabilization effect is maximized at a frequency of 50 Hz, with arc voltage fluctuation at 4.65 V, accounting for only 5.47% of total arc voltage. It is also found that the arc temperature increases with the frequency of the magnetic field, reaching 4743 K at 10 Hz and 4976 K at 1000 Hz. In addition, the effects of sinusoidal, triangular and rectangular magnetic field excitation currents on the arc are investigated, it is found that the arc shows the greatest stability in the triangular field, with a voltage fluctuation of 3.04 V. This study provides theoretical support for the application of ATMF regulation to enhance the stability of the pantograph-catenary arc.
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