Noise characteristics of current collector for high-speed railway using delta-shaped collector head

摘要

High-speed railway noise comes from vibration and aerodynamic noises. Rolling noise from rail and wheel vibration and aerodynamic noise generated under the car body can be minimized with noise barriers constructed along the rails. Thus, noise radiated from current collectors becomes the dominant noise source, and it must be controlled to reduce noise emission from high-speed railways. A pantograph cover is a useful and effective apparatus that reduces aerodynamic noise from a conventional pantograph when the operating speed does not exceed 300km/h.