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张博,沈传文,唐千龙,邱东,张鹏.基于二倍频转矩脉动的异步电机定子匝间短路故障预测方法[J].电源学报,2019,17(1):171-180
基于二倍频转矩脉动的异步电机定子匝间短路故障预测方法
Prediction Method for Stator Winding Inter-turn Short-circuit Fault of Asynchronous Motor Based on Torque Double-frequency Ripple
投稿时间:2016-10-08  修订日期:2018-03-08
DOI:10.13234/j.issn.2095-2805.2019.1.171
中文关键词:  转矩二倍频脉动  异步电机  定子匝间短路故障  故障预测  动态模型
英文关键词:torque double-frequency ripple  asynchronous motor  stator winding inter-turn short-circuit fault  fault prediction  dynamic model
基金项目:大型电气传动系统与装备技术国家重点实验室资助项目(SKLLDJ022016003)
作者单位E-mail
张博 西安交通大学电气工程学院, 西安 710049  
沈传文 西安交通大学电气工程学院, 西安 710049 scw@xjtu.edu.cn 
唐千龙 西安交通大学电气工程学院, 西安 710049  
邱东 西安交通大学电气工程学院, 西安 710049  
张鹏 西安交通大学电气工程学院, 西安 710049  
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中文摘要:
      为了能够在故障早期有效地检测异步电机定子绕组匝间短路故障,首先建立了异步电机在定子匝间短路状态下的动态数学模型,运用坐标变换和空间矢量变换的思想对异步电机动态模型进行分析与仿真,提出了一种新的基于计算转矩二倍频脉动的匝间短路检测方法。通过搭建异步电机定子绕组匝间短路的数学模型并对其进行仿真,对匝间短路引发电路计算转矩的变化进行研究,验证了所提出方法的可行性。在此基础之上,提出以计算转矩的二倍频分量为故障特征量对异步电机定子绕组匝间短路故障进行诊断,并分析了该方法的鲁棒性和准确性,从而形成了新的异步电机定子绕组匝间短路故障诊断方法,为电机故障预测提供了新的研究思路。
英文摘要:
      To effectively detect the stator winding inter-turn short-circuit fault of an asynchronous motor at an early stage, a dynamic mathematical model for an asynchronous motor under stator winding inter-turn short-circuit fault is established in this paper at first. Next, this model is calculated and analyzed using the theories of reference frame transformation and space-vector transformation, and a novel inter-turn short-circuit detection method is put forward based on the calculation of torque double-frequency ripple. Through the construction of the mathematic model of the fault motor and the simulations thereafter, the changes in torque caused by inter-turn short-circuit fault are studied, which verifies the feasibility of the proposed method. On this basis, it is proposed that the stator winding inter-turn short-circuit fault of the asynchronous motor can be diagnosed with the double-frequency component of the calculated torque as fault characteristics. In addition, the robustness and accuracy of the proposed method are analyzed. In this way, a novel diagnosis method for stator winding inter-turn short-circuit fault of the asynchronous motor is formed, which can provide a new research idea for motor fault prediction.
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