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Active Rail Potential Hardware Dynamic Emulator System
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Zhenshuai WANG, Xiaofeng YANG, Xiangxuan SUN
Urban Rapid Rail Transit | 2025, 38(6) : 83 - 91
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Urban Rapid Rail Transit | 2025, 38(6): 83-91
• Electrical and Mechanical Engineering •
Active Rail Potential Hardware Dynamic Emulator System
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Zhenshuai WANG, Xiaofeng YANG, Xiangxuan SUN
Affiliations
  • School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044
Published: 2025-12-10 doi: 10.3969/j.issn.1672-6073.2025.06.011
Outline
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To address the difficulty of on-site verification for urban rail transit rail potential and stray current prevention measures, the rail potential hardware dynamic emulator system of rail potential has attracted widespread attention. Existing passive hardware emulator schemes usually achieve dynamic adjustment of the equivalent output resistance by modulating the average insertion time of a fixed power resistor. However, due to the heating and power limitations of fixed power resistors, it is difficult to increase the power rating. Therefore, this paper proposes an active rail potential hardware dynamic emulator (ARPHDE) system. Based on the analysis of the operating principle of the ARPHDE, a coordinated control strategy for the virtual resistance converter unit (VRCU), large resistance converter unit (LRCU), and section switching switches is developed, enabling precise regulation of the equivalent virtual resistance value. Simulation results demonstrate that the ARPHDE can accurately reproduce the spatiotemporal dynamic distribution patterns of rail potential. Compared to traditional passive hardware emulator schemes, the ARPHDE system replaces fixed power resistor regulation with virtual resistance regulation, avoiding issues of the fixed power resistor heating and showing promising application prospects.

urban rail transit  /  rail potential  /  active rail potential hardware dynamic emulator  /  virtual resistance converter unit
王振帅, 杨晓峰, 孙向轩. 有源轨道电位硬件动态模拟系统. 都市快轨交通, 2025 , 38 (6) : 83 -91 . DOI: 10.3969/j.issn.1672-6073.2025.06.011
Zhenshuai WANG, Xiaofeng YANG, Xiangxuan SUN. Active Rail Potential Hardware Dynamic Emulator System[J]. Urban Rapid Rail Transit, 2025 , 38 (6) : 83 -91 . DOI: 10.3969/j.issn.1672-6073.2025.06.011
Appendix
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Year 2025 volume 38 Issue 6
72
12
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Article Info
doi: 10.3969/j.issn.1672-6073.2025.06.011
  • Receive Date：2025-06-09
  • Online Date：2026-10-19
  • Published：2025-12-10
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  • Received：2025-06-09
  • Revised：2025-08-08
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    School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044
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表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
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Genus		 种数
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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