Development of steady arm damper for electrified railway overhead contact line with double pantographs based on numerical and experimental analysis
Abstract To improve the carrying capacity, double pantographs are normally used to collect the electric current from the catenary. The mechanical wave excited by the leading pantograph affects the contact of the trailing pantograph and the contact wire, which usually deteriorates the current collect...
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| Format: | Article |
| Language: | English |
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Wiley
2021-09-01
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| Series: | IET Electrical Systems in Transportation |
| Online Access: | https://doi.org/10.1049/els2.12024 |
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| _version_ | 1832558689931755520 |
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| author | Wenping Chu Yang Song Fuchuan Duan Zhigang Liu |
| author_facet | Wenping Chu Yang Song Fuchuan Duan Zhigang Liu |
| author_sort | Wenping Chu |
| collection | DOAJ |
| description | Abstract To improve the carrying capacity, double pantographs are normally used to collect the electric current from the catenary. The mechanical wave excited by the leading pantograph affects the contact of the trailing pantograph and the contact wire, which usually deteriorates the current collection quality. To address this issue, a steady arm damper is developed in this work to reduce the wave intensity caused by the leading pantograph. The catenary is modelled by Absolute Nodal Coordinate Formulation. The numerical simulations indicate that the steady arm damper with certain values reduces the contact force variation of the trailing pantograph. But overlarge damping may behave as a hard spot and aggravates the interaction performance. The acceptable steady arm damping should be lower than 300 Ns/m. The optimal value of the steady arm damping coefficient varies with the train speed. The realistic damping ratio should be determined based on the operating speed of a railway line. Based on the simulation results, several realistic steady arm dampers are developed, which are placed between the cantilever and the end of the steady arm. An experimental test is conducted to investigate the effect of the steady arm damper on the reduction of vibration caused by the dropping sinker. The experimental results demonstrate that the steady arm damper can reduce the mechanical wave amplitude and eliminate its effect on the trailing pantograph. |
| format | Article |
| id | doaj-art-d4202179d19c49278b4902a49063e810 |
| institution | Kabale University |
| issn | 2042-9738 2042-9746 |
| language | English |
| publishDate | 2021-09-01 |
| publisher | Wiley |
| record_format | Article |
| series | IET Electrical Systems in Transportation |
| spelling | doaj-art-d4202179d19c49278b4902a49063e8102025-02-03T01:31:54ZengWileyIET Electrical Systems in Transportation2042-97382042-97462021-09-0111326927710.1049/els2.12024Development of steady arm damper for electrified railway overhead contact line with double pantographs based on numerical and experimental analysisWenping Chu0Yang Song1Fuchuan Duan2Zhigang Liu3National Rail Transit Electrification and Automation Engineering Technique Research Centre Southwest Jiaotong University Chengdu ChinaDepartment of Structural Engineering Norwegian University of Science and Technology Trondheim NorwayNational Rail Transit Electrification and Automation Engineering Technique Research Centre Southwest Jiaotong University Chengdu ChinaNational Rail Transit Electrification and Automation Engineering Technique Research Centre Southwest Jiaotong University Chengdu ChinaAbstract To improve the carrying capacity, double pantographs are normally used to collect the electric current from the catenary. The mechanical wave excited by the leading pantograph affects the contact of the trailing pantograph and the contact wire, which usually deteriorates the current collection quality. To address this issue, a steady arm damper is developed in this work to reduce the wave intensity caused by the leading pantograph. The catenary is modelled by Absolute Nodal Coordinate Formulation. The numerical simulations indicate that the steady arm damper with certain values reduces the contact force variation of the trailing pantograph. But overlarge damping may behave as a hard spot and aggravates the interaction performance. The acceptable steady arm damping should be lower than 300 Ns/m. The optimal value of the steady arm damping coefficient varies with the train speed. The realistic damping ratio should be determined based on the operating speed of a railway line. Based on the simulation results, several realistic steady arm dampers are developed, which are placed between the cantilever and the end of the steady arm. An experimental test is conducted to investigate the effect of the steady arm damper on the reduction of vibration caused by the dropping sinker. The experimental results demonstrate that the steady arm damper can reduce the mechanical wave amplitude and eliminate its effect on the trailing pantograph.https://doi.org/10.1049/els2.12024 |
| spellingShingle | Wenping Chu Yang Song Fuchuan Duan Zhigang Liu Development of steady arm damper for electrified railway overhead contact line with double pantographs based on numerical and experimental analysis IET Electrical Systems in Transportation |
| title | Development of steady arm damper for electrified railway overhead contact line with double pantographs based on numerical and experimental analysis |
| title_full | Development of steady arm damper for electrified railway overhead contact line with double pantographs based on numerical and experimental analysis |
| title_fullStr | Development of steady arm damper for electrified railway overhead contact line with double pantographs based on numerical and experimental analysis |
| title_full_unstemmed | Development of steady arm damper for electrified railway overhead contact line with double pantographs based on numerical and experimental analysis |
| title_short | Development of steady arm damper for electrified railway overhead contact line with double pantographs based on numerical and experimental analysis |
| title_sort | development of steady arm damper for electrified railway overhead contact line with double pantographs based on numerical and experimental analysis |
| url | https://doi.org/10.1049/els2.12024 |
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