The invention discloses a full-direct-current circuit topological structure of an emergency self-walking system of a high-speed train, wherein the 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, wherein the medium-high frequency auxiliary converter adopts a DC-DC conversion circuit topological structure, and the bidirectional charger adopts a multi-module cascade topological structure. According to the invention, the medium-high frequencyauxiliary converter is adopted to replace a traditional auxiliary converter and a power frequency transformer, and an AC 380 V/50 Hz AC line is canceled; the bidirectional DC-DC converter replaces atwo-stage topological structure of preceding-stage rectification and backward-stage DC-DC conversion in an original bidirectional charger, the size and the weight of the emergency self-walking systemcan 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全直流电路拓扑结构,该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直‑直变换电路拓扑结构,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变压器,取消AC380V/50Hz的交流线路;双向直‑直变换器代替原有双向充电机中的前级整流和后级直‑直变换的两级拓扑结构,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。
Full-direct-current 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全直流电路拓扑结构
2021-01-26
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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