High speed train pantograph and noise reduction method thereof

Abstract

The embodiment of the invention provides a high speed train pantograph and a noise reduction method thereof. The high speed train pantograph includes a sliding plate, wherein a plasma exciter is arranged on the windward surface of the sliding plate, the windward surface of the sliding plate is completely covered with the side surface, contacting with the sliding plate, of the plasma exciter, the upper surface of the plasma exciter is flush with or lower than the upper surface of the upper surface of the sliding plate, the lower surface of the plasma exciter is flush with or higher than the lower surface of the sliding plate, and at least one group of electrodes are paved on the inner sides and the outer sides of the windward surface of the plasma exciter along the sliding plate in an unfolding mode. According to the high speed train pantograph and the noise reduction method thereof, an airflow boundary layer is actively controlled through the plasma exciter, vortex shedding is effectively restrained, the aerodynamic characteristic of the pantograph is improved in the process of train operation, aerodynamic noise generated by the pantograph in the driving process of a high speed train can be reduced, and the purposes that the noise is lowered, and the comfort level of passengers is improved are achieved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of electric train equipment, in particular to a high-speed train pantograph and a noise reduction method thereof. Background technique [0002] The dynamic environment of ordinary trains is dominated by mechanical and electrical effects, while the dynamic environment of high-speed trains is dominated by aerodynamic effects. The biggest limitation brought about by this is the aerodynamic noise. When the train is running at high speed, the pantograph will seriously disturb the airflow, causing complex flow separation and a series of vortex shedding and crushing, resulting in a strong far-field air pulsation pressure field, which is transformed into aerodynamic noise. [0003] In the existing technology, there are many ways to optimize the noise reduction design of the pantograph, such as improving the structure of the pantograph, pasting porous materials on the pantograph components, inst...

AI Technical Summary

Problems solved by technology

Although these passive methods have some effect, they have more limiting factors

Such as relying too much on engineering experience, and the noise reduction effect is limited and the cost is high

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