The Research On The Scheme Of Regenerative Braking Energy Used For Power And Lighting System Of Metro

With the rapid development of national economy and the accelerating urbanization process, serious traffic congestion, chaotic traffic, and many other issues in big cities have already become the factors restricting the social development. Against this background, with large capacity, safety and energy saving, small footprint and many other advantages, urban rail train has become the best choice to alleviate the urban traffic congestion.There are some significant features in Urban rail train,such as short distance between the stations, high density, starting and braking frequently. A large amount of braking energy has been produced during the train braking process. This paper makes the urban rail train braking energy as the research object. To realize the purpose of energy conservation and environmental protection, the energy, which is produced by the regenerative braking of the metro train, is used for the power and lighting system of the subway, via the inverter-resistance master-slave solution scheme. And the energy recovery solutions have been analyzed by matlab/simulink simulation software.Firstly, to determine the inverter feedback solutions in this paper, several metro braking schemes were contrasted and analyzed. At the same time, the braking energy of metro train was calculated and analyzed under different initial speed from the two aspects:dynamics and train traction control strategy.Secondly, metro traction power supply system model was established through analyzing the working principle of the24-pulse rectifier. And according to the principle of the subway train traction, motor traction control strategies was determined, and urban rail train power transmission models have been built by Matlab/Simulink for the analysis of locomotive traction, coasting drifting and braking process and so on.Finally, the parameters of IGBT the filters and other components was calculated and the regenerative braking energy absorption model was built, based on the inverter-resistance master-slave solution scheme. Then, the scheme of breaking energy used for power and lighting system was simulated and verified in different situations, such as one train or multiple trains running.