电气化铁路传动技术100年的发展(二)

100 Years of Development of Traction Equipment for Electrified Railways(2)

在直流电气化铁路上,一开始就较好地掌握了传动技术,但在交流电气化铁路上,几十年来传动技术要求供电电源的频率低于地方电网的频率。进一步发展传动技术时只有使用电力电子技术才可减小受电网支配的影响。今天用GTO和IGBT电力电子元件和微机控制技术,能在所有供电电网下使用交流传动技术。

The traction equipment of d.c.railways could be well controlled from the very beginning while in the case of a.c.railways thefeeding frequency used for traction was for decades required to be lower than that of the national power supply system.It was with the adventof power electronics only that the dominating impact of the power supply systems could be lessened in the course of the further developmentof the traction equipment.Today’s three-phase traction equipment using GTO and IGBT elements may in conjunction with microcomputer-based control and instrumentation concepts be employed in any power supply system.