Train emergency energy storage power supply topological structure and control method thereof

Abstract

The invention discloses a train emergency energy storage power supply topological structure and a control method thereof. The train emergency energy storage power supply topological structure comprises a traction transformer, a pulse rectifying circuit, an intermediate DC energy storage adjusting link and a traction inverter. The pulse rectifying circuit is connected with a traction network through the traction transformer; the intermediate DC energy storage adjusting link is connected between the pulse rectifying circuit and the traction inverter, and the pulse rectifying circuit controls thevoltage of the intermediate DC energy storage adjusting link to control the energy output of the emergency energy storage power supply. The output end of the traction inverter is connected to a traction motor, and the traction motor is controlled to operate through the traction inverter. According to the invention, the defects of high cost, more devices and lower efficiency in the traditional topology scheme can be solved; cost can be effectively saved, emergency energy storage power supply installation capacity is increased, operation efficiency is improved, train emergency capacity is enhanced, and passenger safety is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of train emergency power supplies, and in particular relates to a topology structure of a train emergency energy storage power supply and a control method thereof. Background technique [0002] The train emergency system mainly considers to maintain the safe operation of the train to the station under the fault state of the traction network, and at the same time maintain the comfortable environment of the people in the train. [0003] In recent years, China has begun to demonstrate the use of energy storage as an on-board emergency power supply for trains. At present, in the topology structure adopted by the on-board emergency power supply of trains, the energy storage needs to be connected to the traction transformer after passing through the bidirectional DC / DC converter and the inverter. Therefore, the energy flow of the existing topology will go through the route of converter-inverter-rectifier-inverter...

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Problems solved by technology

[0004] In order to solve the above problems, the present invention proposes a train emergency energy storage power supply topology and its control method. Many disadvantages and low efficiency; it can effectively save costs, increase the installation capacity of emergency energy storage power supply, improve operating efficiency, enhance the emergency capacity of trains, and ensure the safety of passengers

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