CRH2与CRH5型动车组网侧变流器的对比分析

Contrast analysis of grid-side converters of CRH2 and CRH5 trains

网侧变流技术是动车组牵引系统中的关键技术之一。以高速动车组网侧变流器采用的单相三电平和两重两电平变流电路为研究对象,介绍了CRH2与CRH5型动车组网侧变流器的主电路结构,分析了两种网侧变流器的工作模式,并对其性能优劣进行了对比。两种电路各有优缺点,在实际使用中应按照各自的特点根据具体情况来选择。

The grid-side converter technology is one of the key technologies for the traction systems of the CRH trains. Taking the single-phase three-level and twofold two-level converter circuits adopted by the high-speed EMU train grid-side converters as the research object,the main circuit structures of CRH2 and CRH5 EMU train grid-side converters are presented. The working mode,the performance,the advantages and the disadvantages of the two kinds of the main circuits are analyzed and compared. It should be used in actual according to their specific situations and their specific characteristics.