Publication: A Numerical Technique for Estimating High-Frequency Radiated Emissions from Railway System
Issued Date
2021-04-01
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ISSN
1558187X
00189375
00189375
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2-s2.0-85104286592
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Mahidol University
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SCOPUS
Bibliographic Citation
IEEE Transactions on Electromagnetic Compatibility. Vol.63, No.2 (2021), 463-473
Suggested Citation
Phumin Kirawanich A Numerical Technique for Estimating High-Frequency Radiated Emissions from Railway System. IEEE Transactions on Electromagnetic Compatibility. Vol.63, No.2 (2021), 463-473. doi:10.1109/TEMC.2020.3010256 Retrieved from: https://repository.li.mahidol.ac.th/handle/20.500.14594/76951
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Title
A Numerical Technique for Estimating High-Frequency Radiated Emissions from Railway System
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Abstract
This article presents a finite-difference time-domain technique to analyze the characteristics of the railway system emission to the outside environment. The 2-D simulation implements algorithms accommodating the interactions of Poisson's equation for the cross-component electrostatic coupling between the train and infrastructure with Maxwell's curl equations accounting for the time-varying wave propagation across the discontinuous boundaries excited by the on-board 400-MHz terrestrial trunked radio system. The 2-D near-field to far-field conversion using the generated surface currents concludes the investigation of system emission characteristics in terms of the radiation pattern and emission level in accordance with the EN 50121-2 criteria. The numerical results of the emission spectrum from 300 MHz to 1 GHz influenced by the integrated railway system components and on-site measurement records during the 750-Vdc metro system integration tests provide a validation of technique for estimating the railway system radiation prior to the start of the system installation phase.