A Hybrid Model Flux Estimator for Diagnosis of Inter-Turn Short Circuit Fault in Traction Motors Considering Inverter Nonlinearity

IF 4.5 2区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Industry Applications Pub Date : 2025-04-18 DOI:10.1109/TIA.2025.3562513

Lisong He;Jinsong Kang;Dongliang Ke;Fengxiang Wang

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引用次数: 0

Abstract

Stator inter-turn short circuit (ITSC) faults are among the most severe malfunctions encountered in traction motors, significantly compromising the power output of high-speed trains. This paper presents an effective fault diagnosis method for detecting ITSC faults in traction motors, utilizing a voltage-current hybrid model flux estimator. The fault characterization signal is obtained using the PI module within the flux estimator, specifically designed to compensate for flux errors associated with pure integration and stator resistance measurements at low speeds. Firstly, a mathematical model of the induction motor under ITSC faults is established, and a high-precision voltage-current hybrid flux estimator based on deadbeat stator current observer is proposed. Secondly, the impact of ITSC faults and the characteristics of the inverter nonlinearity on the fault characterization signal is analyzed. Furthermore, an assessment is conducted on the influence of various parameter mismatches in the motor on the fault characterization signal. Finally, the efficacy of the proposed fault diagnosis method is validated through simulations and experiments conducted under diverse operating conditions.

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考虑逆变器非线性的牵引电动机匝间短路故障诊断的混合模型磁链估计器

定子匝间短路（ITSC）故障是牵引电机中最严重的故障之一，严重影响高速列车的输出功率。本文提出了一种利用电压-电流混合模型磁链估计器检测牵引电机ITSC故障的有效诊断方法。故障表征信号是使用磁链估计器中的PI模块获得的，该模块专门设计用于补偿与纯积分和低速定子电阻测量相关的磁链误差。首先，建立了异步电动机ITSC故障下的数学模型，提出了一种基于无差拍定子电流观测器的高精度电压-电流混合磁链估计器。其次，分析了ITSC故障和逆变器非线性特性对故障表征信号的影响。此外，还评估了电机中各种参数失配对故障表征信号的影响。最后，通过不同工况下的仿真和实验验证了所提故障诊断方法的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

IEEE Transactions on Industry Applications 工程技术-工程：电子与电气

CiteScore

9.90

自引率

9.10%

发文量

747

审稿时长

3.3 months

期刊介绍： The scope of the IEEE Transactions on Industry Applications includes all scope items of the IEEE Industry Applications Society, that is, the advancement of the theory and practice of electrical and electronic engineering in the development, design, manufacture, and application of electrical systems, apparatus, devices, and controls to the processes and equipment of industry and commerce; the promotion of safe, reliable, and economic installations; industry leadership in energy conservation and environmental, health, and safety issues; the creation of voluntary engineering standards and recommended practices; and the professional development of its membership.