论文信息 - High-frequency experimental characterization of impedance bonds used in railway systems

High-frequency experimental characterization of impedance bonds used in railway systems

The development of EMC models of complex railway systems requires accurate characterization of all the units integrated in the railway environment. In line with this aim, in this paper two methods are proposed for the characterization of impedance bonds (IBs) up to 100 MHz. The first method makes use of a signal generator and an oscilloscope for the measurement of open-circuit impedances, whereas the second foresees the measurement of scattering parameters via a vector network analyzer. This experimental characterization of IBs proves to be useful for multiconductor-transmission-line (MTL) modeling of the railway infrastructure, aimed at analyzing its impact on the electromagnetic emissions radiated to the outside world.

G. Spadacini | E. Fedeli | S.A. Pignari

[1] T. Hasman. Reflection and transmission of traveling waves on power transformers , 1997 .

[2] S. Ramo,et al. Fields and Waves in Communication Electronics , 1966 .

[3] D. Bellan,et al. Distributed-parameter modeling of a railway line for the characterization of open-area test sites for radiated emissions measurement , 2007, EMC 2007.

[4] Amedeo Pignari Sergio,et al. Impact of the infrastructure on the electromagnetic emissions radiated by a railway system , 2008 .

[5] A. Mariscotti,et al. Distribution of the Traction Return Current in AC and DC Electric Railway Systems , 2002, IEEE Power Engineering Review.

[6] Diego Bellan,et al. Measurement of rolling-stock radiated emissions according to standard EN 50121 , 2006 .

[7] Huaying Dong,et al. High-frequency EMTP model of transformer windings , 2006, 2006 17th International Zurich Symposium on Electromagnetic Compatibility.

[8] R. Lamedica,et al. A measurement campaign on audio frequency track circuits of Italian high speed railway systems , 2006, International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006..

[9] A.M.L. Tortia. Turin-Milan high-speed railway-line, 2x25 kV 50 Hz AC electrified. EMC problems in earthing of exposed conductive parts , 2006, International Symposium on Power Electronics, Electrical Drives, Automation and Motion, 2006. SPEEDAM 2006..