The Study Of High Current DC Charging System For Supercapacitor Energy Storage Tram

As a member of modern urban rail transit,the new tram has been paid attention to and popularized in recent years with its unique advantages such as its comfortable appearance,low energy consumption and short construction period.In particular,small and medium-sized cities with medium traffic demand and City surrounding lines,in a short period of time to ease the regional traffic pressure.Super capacitor energy storage type tram is a new type of contactless trolley,its high degree of coordination with the landscape environment advantages in recent years in some cities have been promoted and piloted,such as Guangzhou,Huai'an,Wuhan,Sanya,etc.Rapid growth trend.In this paper,from the super capacitor energy storage tram to start,outlined the stage of the tram at this stage of the power supply and charging system status,due to the characteristics of the current charging system caused by the power grid has a certain impact,The main content of the study.Firstly,the power demand of the power supply scheme is analyzed.By analyzing and comparing the advantages and disadvantages,the actual operation case is the design condition and the scene of the charging system is considered.The design scheme and the improvement measures are taken to avoid the impact of the system on the power grid and reduce the system cost.As a starting point,the research scheme of this topic is put forward.From the practical application point of view,for the AC / DC rectifier circuit,DC buck chopper circuit and bidirectional DC / DC converter circuit for a detailed analysis and comparison,select the appropriate design and system design and research.The design and analysis of the hardware system,the design and analysis of the hardware system,the research of the core control strategy and the construction of the control system.After the design and analysis of the product,the detailed design modeling and simulation has been made and verified.Of the power input to make a comparative analysis,adding the internal energy storage subsystem to effectively reduce the power grid load.Which verifies the deviation between simulation and practice and has a good guiding effect on similar applications in the future design process.