The invention provides a traction power transformation unit. The traction power transformation unit is connected with a power supply unit through a direct current bus, electric energy outputted to thedirect current bus by the power supply unit is converted and then supplied to a traction motor winding section, a first inverter and a second inverter are connected with the direct current bus through a first input switch and a second input switch respectively, the first inverter and the second inverter are connected with a first power supply end and a second power supply end of the traction motor winding section through a first output switch and a second output switch respectively, and the current supplied by the first power supply end and the current supplied by the second power supply endcan have a phase difference so that the alternating current can be generated in the traction motor winding section. The traction power transformation unit is advantaged in that by changing a power supply topological structure of a long-stator linear synchronous motor, the design requirement of a converter and a performance index of a traction control system are reduced, so more application scenarios of the long-stator linear synchronous motor are expanded.
本发明提供一种牵引变电单元,牵引变电单元经由直流母线与供电单元连接,并将供电单元输出至直流母线的电能变换后供给至牵引电机绕组段,第一逆变器和第二逆变器分别经由第一输入开关和第二输入开关连接至直流母线,第一逆变器和第二逆变器分别经由第一输出开关和第二输出开关连接至牵引电机绕组段的第一供电端和第二供电端,并且第一供电端被供给的电流与第二供电端被供给的电流能够具有相位差,以使得牵引电机绕组段中产生交变电流。本发明还提供采用上述牵引变电单元的牵引供电系统。通过改变长定子直线电机的供电拓扑结构,降低对变流器设计要求以及牵引控制系统性能指标,从而实现长定子直线同步电机更多应用场景拓展。
Traction power transformation unit and traction power supply system
牵引变电单元及牵引供电系统
2020-05-05
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen |
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