The invention discloses a DC700V circuit topological structure of a high-speed train emergency self-walking system. The DC700V circuit topological structure comprises a main traction inverter, a traction motor, a medium-high frequency auxiliary converter, a bidirectional charger, a power battery, a bidirectional DC-DC converter and a storage battery, and is characterized in that the medium-high frequency auxiliary converter adopts a DC-AC circuit topological structure characterized by firstly reducing voltage and then inverting; and the bidirectional charger adopts a multi-module cascade topological structure. According to the invention, the medium-high frequency auxiliary converter is adopted to replace a traditional auxiliary converter and a power frequency isolation transformer, and thebidirectional DC-DC converter is adopted to replace a two-stage topological structure of a front-stage rectifier and a rear-stage DC-DC converter in an original charger, so that the size and the weight of the emergency self-walking system can be effectively reduced; and the energy density and the working efficiency of the system are improved.
本发明公开了一种高速列车应急自走行系统的DC700V电路拓扑结构,包括主牵引逆变器、牵引电机、中高频辅助变流器、双向充电机、动力电池、双向直‑直变换器及蓄电池,其中中高频辅助变流器采用先降压后逆变式的直‑交电路拓扑结构,双向充电机采用多模块级联拓扑结构。本发明通过采用中高频辅助变流器代替传统辅助变流器和工频隔离变压器,双向直‑直变换器代替原有充电机中的前级整流器和后级直‑直变换器两级拓扑结构,能有效地减小应急自走行系统的体积和重量,提高系统的能量密度和工作效率。
DC700V circuit topological structure of high-speed train emergency self-walking system
一种高速列车应急自走行系统的DC700V电路拓扑结构
2021-01-22
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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