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Current Characteristics Analysis and Fault Injection of an Early Weak Fault in Broken Rotor Bar of Traction Motor

机译：牵引电动机转子断条早期弱电的电流特性分析及故障注入

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摘要

Aiming at the destructive and irreversible problems of the broken rotor bar fault of the tractionmotor, the current characteristics of the early weak fault of the single bar are analyzed, and the broken rotor bar fault simulation injection is realized on the experimental platform. Firstly, a damage factor from the change rule of the metal resistance value of a rotor bar is defined. By means of such a damage factor, the relationship between the severity of the fracture of a single rotor bar and the phase resistance of the tractionmotor was obtained. Through the superposition principle, the traction motor in the fault of the rotor bar was regarded as a normal motor in which the reverse current source was superimposed on the fault rotor bar. The characteristic values of the stator current fault component were obtained when the single bar had broken. Finally, the relationship between the fault characteristics component of the stator current and the fracture severity of the single rotor bar was established. On this basis, on hardware-in-the-loop fault injection benchmark of the traction drive control system based on dSPACE, the gradual injection of early weak faults in the early broken rotor bar was carried out and the results were analyzed. The experimental data demonstrated the correctness of the current characteristics analysis and fault injection.
机译：针对牵引电机转子断条故障的破坏性和不可逆性问题，分析了单棒早期弱故障的电流特性，在实验平台上实现了转子断条故障的仿真注入。首先，根据转子棒的金属电阻值的变化规律来确定损伤因素。通过这种破坏因素，获得了单个转子条的断裂的严重程度与牵引电动机的相电阻之间的关系。通过叠加原理，将转子条故障中的牵引电动机视为普通电动机，其中反向电流源叠加在故障条上。当单条断开时，获得定子电流故障分量的特性值。最后，建立了定子电流故障特征分量与单根转子棒断裂强度之间的关系。在此基础上，基于dSPACE的牵引传动控制系统在环故障注入基准测试中，逐步注入了早期断裂的转子棒中的早期弱故障，并对结果进行了分析。实验数据证明了电流特性分析和故障注入的正确性。

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  • 来源
    《Mathematical Problems in Engineering》 |2018年第13期|4934720.1-4934720.8|共8页
  • 作者

    Yin Jintian; Xie Yongfang; Peng Tao; Yang Chunhua; Chen Zhiwen;

  • 作者单位

    Cent S Univ Sch Informat Sci & Engn Changsha 410083 Hunan Peoples R China|Shaoyang Univ Hunan Prov Key Lab Grids Operat & Control Multipo Shaoyang 422000 Peoples R China;

    Cent S Univ Sch Informat Sci & Engn Changsha 410083 Hunan Peoples R China;

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