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斩波调压地铁电动客车,经常处于直流500～900V供电电压下工作,尤其在高压大电流再生制动状态下工作时,一旦出现换流失败,往往会造成系统元、器件损坏或牵引电机环火等严重故障。为了快速和可靠地对系统换流失败进行保护,多年来我们曾先后采用了电子电路配合主电路DW10D-600型、JR15-B型等断路器,进行了换流失败电子保护系统多方案研制试验工作,并经进一步设计改进,正式
Subway electric bus chopper, often in the DC 500 ~ 900V supply voltage work, especially in the high voltage high current regenerative braking state, once the commutation failure, often result in system components, device damage or traction motor ring Fire and other serious problems. In order to quickly and reliably protect the system from commutation failure, over the years we have adopted the electronic circuit with the main circuit DW10D-600 type, JR15-B-type circuit breakers, conducted a multi-program development of the failed converter electronic protection system test Work, and further design improvements, formal