The invention discloses an AC380V circuit topological structure of an emergency self-walking system of a high-speed train, wherein the AC380V circuit topological structure comprises a main traction inverter, a traction motor, an auxiliary converter, a power frequency transformer, a bidirectional charger, a power battery and a storage battery, wherein the auxiliary converter adopts a three-phase inverter; the bidirectional charger comprises a preceding-stage three-phase rectification circuit and a backward-stage bidirectional DC-DC conversion circuit, and the backward-stage bidirectional DC-DCconversion circuit comprises two or more cascaded dual active bridge-isolated bidirectional DC-DC converters which are symmetrical in structure. According to the invention, a multi-module cascaded DC-DC converter topological structure is adopted to replace a backward-stage DC-DC conversion circuit in a traditional bidirectional charger, so that the size and the weight of the emergency self-walkingsystem 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AC380V电路拓扑结构,包括主牵引逆变器、牵引电机、辅助变流器、工频变压器、双向充电机、动力电池、及蓄电池,其中辅助变流器采用三相逆变器,双向充电机包括前级三相整流电路和后级双向直‑直变换电路,后级双向直‑直变换电路包括两个及以上结构对称的级联双有源全桥隔离变换器。本发明通过采用多模块级联直‑直变换器拓扑结构代替传统双向充电机中的后级直‑直变换电路,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。
AC380V circuit topological structure of emergency self-walking system of high-speed train
一种高速列车应急自走行系统的AC380V电路拓扑结构
2021-01-26
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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