The invention provides a three-phase motor train unit traction transmission power supply system which comprises a three-phase rectifying device, a DC/DC conversion device, and a traction inversion device ; the three-phase rectifying device comprises a three-phase alternating-current input port and three direct-current output port sets, each direct-current output port set comprises n direct-current output ports, n is larger than or equal to 1, and the number of n is set according to the voltage level of an external three-phase power source; the DC/DC conversion device comprises 3n independent power electronic transformers, the input port of each power electronic transformer is correspondingly connected with one direct current output port of the three-phase rectifying device, and the output ports of the power electronic transformers are connected in parallel and then serve as the direct current output port of the DC/DC conversion device; the input port of the traction inversion device is connected with the direct current output port of the DC/DC conversion device, and the output port of the traction inversion device is electrically connected with a traction motor. The three-phase rectifying device is directly used for taking electricity from the external power supply to drive the traction motor, a vehicle-mounted traction transformer can be omitted, the value of n can be set according to different voltage grades, and the applicable voltage grade range is wide.
本发明提供了一种三相动车组牵引传动供电系统,包括:三相整流装置,包括三相交流输入端口和三组直流输出端口组,每组直流输出端口组包括n个直流输出端口,其中,n≥1,n的数量根据外部三相电源电压等级设置;DC/DC变换装置,包括3n个独立电力电子变压器,每个电力电子变压器的输入端口对应连接所述三相整流装置的一个直流输出端口,每个电力电子变压器的输出端口并联后作为所述DC/DC变换装置的直流输出端口;牵引逆变装置,所述牵引逆变装置的输入端口与所述DC/DC变换装置的直流输出端口连接,所述牵引逆变装置的输出端口与牵引电机电连接。本发明直接通过三相整流装置从外部电源取电驱动牵引电机,可以取消车载牵引变压器,并且可以根据不同电压等级设置n的取值,适用的电压等级范围广。
Three-phase motor train unit traction transmission power supply system
一种三相动车组牵引传动供电系统
2022-01-07
Patent
Elektronische Ressource
Chinesisch
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |