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首页> 外文会议>International Conference on Control, Automation and Robotics >Analysis of Armature-Winding Inter-Turn Short Circuit Fault in Multiphase Brushless Exciter
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Analysis of Armature-Winding Inter-Turn Short Circuit Fault in Multiphase Brushless Exciter

机译：多相无刷励磁机绕组间匝间短路故障分析

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The paper establishes a mathematical model based on multi-loop method and tensor method for the multiphase brushless exciter widely used in the nuclear plant, and the inductances of the machine in the model are computed by FEM, which covers the influences of pole shape, cogging effect, spatial harmonics of the magnetic field. The model is then used to simulate the multiphase excitation system at normal and abnormal conditions including armature-winding internal short circuit, one of common faults in the exciter, which is of great importance for fault detection and improvement of the machine's reliability. In addition, the paper conducts associated fault experiments on a customized experimental prototype to verify the model. Simulated and measured results show that most electrical quantities of the system change significantly and the exciter needs a quick shutdown to avoid the associated windings' burning out when a metallic armature-winding inter-turn short circuit occurs in the multiphase brushless exciter.
机译：本文针对核电站中广泛使用的多相无刷励磁机，建立了基于多环法和张量法的数学模型，并通过有限元法计算了模型中电机的电感，涵盖了磁极形状，齿槽效应的影响。效应，磁场的空间谐波。然后将该模型用于模拟正常和异常条件下的多相励磁系统，包括电枢绕组内部短路（励磁机中的常见故障之一），这对于故障检测和提高机器的可靠性至关重要。此外，本文在定制的实验原型上进行了相关的故障实验，以验证模型。仿真和测量结果表明，系统的大部分电量都会发生显着变化，并且在多相无刷励磁机中发生金属电枢绕组匝间短路时，励磁机需要快速停机，以避免相关的绕组烧坏。

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