Research On Technology And Application Of Regenerative Braking Energy Recovery For Trains

In recent years,with the support of national policies,urban rail transit in China has developed rapidly,and the scale of road network has been expanding.With the development of new technology.With the development of new technologies,the construction of more energy-efficient urban rail transit systems has become the future development direction.Among many new technologies,braking energy feedback technology and super capacitor energy storage technology are the hotspots of current research.This paper focuses on the two energy-saving technologies and their application in Beijing subway,and through comparative analysis,some useful conclusions are drawn.The main work of this paper is as follows:Firstly,the main circuit topology of the energy feedback device is analyzed,the switch function model is established,the double closed-loop control method based on the synchronous rotating coordinate system is introduced,and its effectiveness is verified by simulation experiments.This paper compares the advantages and disadvantages of each possible application scheme,and combines the typical application cases of energy feeding devices in Beijing Metro Line 10 to analyze its energy saving effect.Secondly,the concepts and principles of supercapacitors,modules,and effective energy storage are introduced.The main circuit topology of the supercapacitor energy storage device is studied,and the main circuit parameter design is completed.Based on the classic double closed-loop control strategy,the double closed-loop control strategy based on the static threshold is designed,and the simulation verification and experimental platform verification of the basic functions of the super capacitor energy storage system are completed.Combined with the practical application case of the super capacitor energy storage device in the Beijing subway,its field operation and energy saving effect are analyzed.Finally,the energy feedback scheme and energy storage scheme were compared in terms of external interfaces,installation space,equipment functions,energy saving effects,application scenarios,equipment costs,and service life.Using the system simulation software developed by the project team,taking Beijing line 19 as the research object,two kinds of energy-saving schemes are simulated and compared.The above research results provide important reference for the selection of the final energysaving scheme.Figures: 72,Tables: 23,References: 46.