A Fault-Tolerant Permanent-Magnet Traction Module for Subway Applications
A Fault-Tolerant Permanent-Magnet Traction Module for Subway Applications
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DOI：
10.1109/tpel.2013.2266377
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发表时间：
2014-04
影响因子：
6.7
通讯作者：
Wei Wang;M. Cheng;Bangfu Zhang;Ying Zhu;Shichuan Ding
中科院分区：
文献类型：
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作者：
Wei Wang;M. Cheng;Bangfu Zhang;Ying Zhu;Shichuan Ding
提出了一种适用于地铁应用的容错永磁牵引模块，该模块具有正常、隔离和容错三种不同的运行模式。在正常模式下，2个三相永磁同步电机（PMSM）分别由2个三桥臂电压源逆变器（VSI）控制。该模块能够输出最大转矩，达到最大速度.当一个桥臂发生故障时，相应的永磁同步电机与故障VSI隔离，故障列车运行在隔离模式下，牵引力减小，但在轻载下仍能保持最大速度。但是，如果负载很重，故障地铁列车将停止。为避免故障列车停车，故障列车切换到容错模式，通过容错桥将正常VSI和故障VSI重新配置为1个五桥臂VSI。由于相-相电压分配比较低，直到速度降低到最大速度的一半才使用容错模式。在容错模式下，提出了非相邻选择原则，以防止公共桥臂过流损坏。安装该模块的地铁列车在任何一条腿发生故障时都能保持基本的运行性能。分析了其性能，并通过实验验证了其有效性.
A fault-tolerant permanent-magnet traction module is proposed for subway application, which has three different operation modes: normal, isolation, and fault-tolerant mode. In normal mode, 2 three-phase permanent-magnet synchronous machines (PMSMs) are controlled by 2 three-leg voltage-source inverters (VSIs), respectively. The proposed module can output maximum torque and reach the maximum velocity. When one leg fails, the corresponding PMSM is isolated from the fault VSI and the fault subway train operates in isolation mode, in which the traction effort is reduced but the maximum velocity can be maintained under light load. However, the fault subway train will stop if the load is heavy. To avoid the stop, the fault subway train is switched into fault-tolerant mode, in which the healthy VSI and fault VSI are reconfigured to 1 five-leg VSI by a fault-tolerant bridge. Due to lower phase-phase voltage apportionment ratio, the fault-tolerant mode is not used until the velocity is decreased to half of the maximum velocity. In fault-tolerant mode, the nonadjacent selection principle is proposed to prevent the common leg from overcurrent damage. The subway train equipped with the proposed module can maintain basic operation performances if any leg fails. The performances are analyzed and the effectiveness is verified by experimental results.