High-frequency resonances occur frequently in traction power supply systems of high-speed railways in China. In this study, the autotransformer-fed traction power supply system for a high-speed railway was first described, and then the high-frequency resonance mechanism was analysed. On the basis of this, the input impedance at the train's pantograph was applied to identify the resonant frequencies, and a second-order high-pass filter was designed by solving the minimum total input impedance with the steepest descent method. The designed filter can not only suppress the existing resonance, but also avoid a new resonance occurrence. Finally, the resonance mechanism analysis and the designed filter are verified by investigating the harmonic spectrum of the pantograph voltage in a MATLAB/Simulink-based co-simulation.
High-frequency resonance suppression of high-speed railways in China
IET Electrical Systems in Transportation ; 6 , 2 ; 88-95
2016-06-01
8 pages
Article (Journal)
Electronic Resource
English
pantograph voltage , high-frequency resonance suppression , traction power supplies , autotransformer-fed traction power supply system , railways , high-speed railways , autotransformers , second-order high-pass filter , steepest descent method , minimum total input impedance , power harmonic filters , MATLAB-Simulink-based cosimulation , gradient methods , harmonic spectrum , high-pass filters
Metadata by IET is licensed under CC BY 3.0
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