Research and application of emergency traction power supply equipment for Guoneng locomotive

doi:10.16265/j.cnki.issn1003-3033.2026.S1.0020

Abstract

Abstract:

To address the challenge of emergency power supply for coal transport electric locomotives under special operating conditions, ensure safe and reliable locomotive operation, and meet the working and living needs of crew members, the application research of an emergency auxiliary power supply system for electric locomotives was conducted. First, the emergency power supply demands of the SS4 series electric locomotives and the Shenhua alternating current (AC) traction electric locomotives were analyzed under five special operating conditions including the absence of catenary, window-opening operations, battery depletion, and others. Based on this analysis, a system solution was designed, incorporating charging and energy storage circuits, emergency power supply circuits, self-traction power supply circuits, and regenerative self-power generation power supply circuits. The topological structure of each core module was optimized. Mathematical models were established for locomotive traction energy consumption, emergency power consumption, and temperature. These models determined the optimal energy storage capacities for lithium iron phosphate batteries and supercapacitors. Circuit component parameters were designed and validated through simulation using tools such as Matlab/Simulink. Finally, an experimental platform was constructed for functional testing. The results show that the designed emergency auxiliary power supply system possesses a reasonable topological structure and excellent device parameter matching. It can fully adapt to five special operating conditions of Guoneng electric locomotives and effectively solve emergency power supply deficiencies under the absence of catenary, window-opening operations, battery depletion, and other scenarios, exhibiting favorable field application performance.

Key words: Guoneng locomotive, emergency traction, auxiliary power supply, lithium iron phosphate battery, regenerative self-power generation

CLC Number:

X951交通运输安全

Zhang Wenshan, Hu Li, Zhang Quanzhu. Research and application of emergency traction power supply equipment for Guoneng locomotive[J]. China Safety Science Journal, 2026, 36(S1): 133-138.

Figures/Tables 5

References 10

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