论文部分内容阅读
全世界大多数地铁系统都采用直流供电系统,把国家电网的交流电转换成直流电提供给地铁牵引供电。如果采用第三轨供电,电压通常是在600～750V,而如果采用架空接触网供电,那么电压一般可以达到1.5 kV。对于采用直流牵引电动机的传统地铁列车,只需要1套电流变换系统就可以了。对于采用交
Most subway systems in the world use DC power supply system to convert the AC power of the national grid into DC power to provide traction power to the subway. If the third rail is used to supply power, the voltage is usually between 600 and 750V, and if overhead overhead mains is used then the voltage can typically reach 1.5 kV. For traditional subway trains with DC traction motors, only one current transformer system is required. For adoption