| 基于标幺化均值的大功率PWM整流器故障诊断 |
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| 引用本文： | 王磊,杜永红,赵雷廷,吴佐民,刘志刚.基于标幺化均值的大功率PWM整流器故障诊断[J].北方交通大学学报,2010(5):48-52. |
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| 作者姓名： | 王磊 杜永红 赵雷廷 吴佐民 刘志刚 |
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| 作者单位： | [1]北京交通大学电气工程学院,北京100044 [2]《电气时代》杂志社,北京100037 |
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| 基金项目： | “十一五”国家科技支撑计划重点课题项目资助（2007BAA12B07）-1 |
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| 摘 要： | 在对大功率PWM整流器的网侧故障电流畸变现象进行研究的基础上，通过引入交直流中点电位差和网侧故障电流的标幺化均值及交流网侧电流的标幺化均值作为故障特征量形成了标幺化均值法．综合其软硬件实现难度及故障诊断速度来看，标幺化均值法在网侧故障电流畸变的情况下诊断PWM整流器主回路的开关管断路故障时比现有方法容易实现，可靠性更高．
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| 关 键 词： | 城轨牵引供电 故障诊断 大功率PWM整流器 标幺化均值 |
Fault Diagnosis for Large-Capacity PWM Rectifier Based on Normalized Average |
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| WANG Lei,DU Yonghong,ZHAO Leiting,WU Zuomin,LIU Zhigang.Fault Diagnosis for Large-Capacity PWM Rectifier Based on Normalized Average[J].Journal of Northern Jiaotong University,2010(5):48-52. |
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| Authors: | WANG Lei DU Yonghong ZHAO Leiting WU Zuomin LIU Zhigang |
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| Institution: | 1. School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China; 2. Press of Electric Age, Beljing 100037, China) |
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| Abstract: | In this paper, a novel approach with normalized average mechanism is proposed, which introduces the normalized averages of the voltage across AC and DC neutral points, as well as of the gridside fault currents, as characteristic fault signatures for the diagnosis of large-capacity PWM rectifier with break-down switching devices. Such approach has been proven to be more effective in the aspects of realization and reliability, compared with the existing approaches. |
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| Keywords: | supply system in urban mass transit fault diagnosis large-capacity PWM rectifier normalized average approach |
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