Non-contact rail traffic power supply system

Abstract

The invention discloses a non-contact rail traffic power supply system comprising the following parts: a plurality of segments of energy transmitting coils arranged on a ground rail in segments, wherein the length of each segment of the energy transmitting coil and the interval between two segments of energy transmitting coils are respectively equal to or bigger than a compartment length; a plurality of segmented hurl-slices switches corresponding to the energy transmitting coils one by one and used for controlling connection/disconnection between the energy transmitting coils and a traction power grid; a plurality of ground responders arranged on the ground rail in segments; a plurality of segments of energy pickup coils arranged in the compartment of the locomotive, wherein one end of the energy pickup coil is coupled to the energy transmitting coil, and the other end is connected with a traction motor via a high frequency rectifier; at a random moment in the locomotive running process, the coupling area sum between the energy pickup coil and the energy transmitting coil keep constant, i.e., the vehicle-mount energy pickup coil can obtain constant magnetic flux; the system also comprises a vehicle-mount requestor. The non-contact rail traffic power supply system can realize stable and smooth transition of the locomotive between different segments of the rail, thus ensuring the power supply stability and reliability.

Description

technical field [0001] The invention relates to the technical field of rail transit power supply, in particular to a non-contact rail transit power supply system. Background technique [0002] The non-contact rail transit power supply system is to install an energy pickup coil on the locomotive and lay an energy transmitting coil on the track, and provide power through the magnetic field coupling between the two coils. [0003] In order to improve the efficiency of the power supply system, the existing schemes use segmented guide rails instead of centralized guide rail power supply, that is, energy transmitting coils are laid in segments on the track, and only the corresponding segmented guide rails work to supply power to the locomotive when the locomotive passes by. However, the current In the system, there is generally a transitional condition in which the same energy pick-up coil on the locomotive is simultaneously in two segmented guide rails, that is, the same energy p...

AI Technical Summary

Problems solved by technology

At this time, it is necessary to control the voltage phase and amplitude of the two working energy transmitting coils to be consistent, otherwise a large circulating current will be generated in the energy picking coil, which will increase the system loss and reduce the energy transmission efficiency. The power of the pickup coil fluctuates or even fails to pick up the power, and the power supply reliability and stability are poor

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