Train brake recovery device and method and train

Abstract

The invention discloses a train brake recovery device and method and a train. The device comprises an electric brake, a power distributor, a battery, a first two-way DC / DC converter, a charging capacitor, a second two-way DC / DC converter, a detector and a controller, wherein the power distributor is connected with the electric brake; a node is formed between the electric brake and the power distributor; one end of the first two-way DC / DC converter is connected with the battery; the other end of the first two-way DC / DC converter is connected with the node; one end of the second two-way DC / DC converter is connected with the charging capacitor; the other end of the second two-way DC / DC converter is connected with the node; the detector is used for detecting the voltage of the traction net; the controller is used for controlling the power distributer, the first two-way DC / DC converter and the second two-way DC / DC converter for feeding back the braking electric energy to the traction net during the braking, and controlling the first two-way DC / DC converter and the second two-way DC / DC converter according to the voltage of the traction net so as to select the battery or the charging capacitor to absorb the braking electric energy. The embodiment of the invention has the advantages that the braking electric energy is absorbed through the battery and the charging capacitor arranged on the train, so that the recovery and the utilization of the braking electric energy are realized; the energy source waste is reduced; the load of the traction net is reduced.

Description

technical field [0001] The invention relates to the technical field of rail transit, in particular to a brake recovery device for a train, a train with the device and a brake recovery method for a train. Background technique [0002] With the continuous expansion of the city scale, traffic congestion is increasing, rail trains, such as light rail, subway, etc., have become the main means of transportation in many cities. During the braking process of the train, a large amount of braking electric energy will be generated. With the deepening of the concept of green and environmental protection, the problem of recovering and reusing the braking electric energy of the train has become very urgent. At present, relevant technologies are disclosed, and batteries are installed in trains to recover braking electric energy and supply power to trains. However, the braking electric energy generated when the train brakes is very large. If it is to be absorbed by the on-board battery, a ...

AI Technical Summary

Problems solved by technology

However, the braking electric energy generated when the train brakes is very large. If it is to be absorbed by the on-board battery, a large number of batteries need to be installed on the train, which will not only seriously increase the weight of the train, affect the energy consumption of the train, but also increase the necessary cost

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