地铁车辆牵引系统电机过压及过流故障的原因分析及改进措施

Cause Analysis and Improvement Measures of Metro Vehicle Traction System Motor Overvoltage and Overcurrent

介绍了西安地铁3号线牵引系统过压过流判定逻辑,通过对列车监控系统数据分析,得出列车正线运营时牵引系统检测空转滑行,导致电机相电流过流及直流滤波电压过压,引起牵引系统短暂的保护状态,并断开高速断路器。重点对牵引系统控制策略及空转滑行控制策略进行详细描述,并提出了优化改进措施。

The judgement logic of Xi′an Metro Line 3 traction system overvoltage and overcurrent is introduced.By analyzing data of TCMS(train control and management system),it is concluded that the traction system detects coasting when the train is operating on the main line,which leads to motor phase current overcurrent and DC filter voltage overvoltage,triggering temporary protection state of traction system,and tripping off high-speed circuit breaker.The detailed description of the traction system control strategy and coasting control strategy are expounded,and optimization and improvement measures are proposed.