Novel rail transit power frequency AC 3 kV mode:A train traction system and traction power supply system
With the development of urban rail transit in the new era of higher speed,greater traffic volume,more safety,reliability,and greener energy savings,the current modes of current traction power supply and the types of trains,including the direct current mode and the power frequency single-phase alternating current(AC)mode,cannot well meet the needs of their good development.Therefore,a novel rail transit power frequency AC 3 kV power supply mode is proposed,which mainly involves a train traction system and a traction power supply system.Considering the topological structure of the train traction converter and the characteristics of the core device IGBT,the voltage level of the novel current mode was determined to be AC 3 kV.The AC 3 kV train traction system is proposed.It is divided into a single-phase system,a three-phase system,and a single-phase/three-phase compatible system.Compared with the traditional motor train unit,the onboard traction transformer is no longer set on the train to realize the lightweight of the train.AC 3 kV single-phase and three-phase power receiving systems are proposed.The single-phase power receiving system includes a pantograph with catenary mode and a power receiving shoe with a power supply rail(third rail),and the three-phase power receiving system includes a power receiving shoe with third and fourth rail modes and an electric plow with a contact band mode.A novel type of AC 3 kV traction power supply system is proposed.It is divided into two systems:single-phase and three-phase traction power supplies.The power frequency AC 3 kV and DC 1.5 kV schemes are studied on a certain line,and the research results show that the power frequency AC 3 kV power supply scheme has significant advantages in terms of economy and technology.
rail transittrain traction systemtraction power supply systempower receiving systempower frequency AC3 kV
NETL
NSTL
万方数据
维普
