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基于区间电流的SRM功率变换器短路故障诊断

王熔基 刘勇智 管振水

王熔基, 刘勇智, 管振水等 . 基于区间电流的SRM功率变换器短路故障诊断[J]. 北京航空航天大学学报, 2021, 47(6): 1085-1094. doi: 10.13700/j.bh.1001-5965.2020.0134
引用本文: 王熔基, 刘勇智, 管振水等 . 基于区间电流的SRM功率变换器短路故障诊断[J]. 北京航空航天大学学报, 2021, 47(6): 1085-1094. doi: 10.13700/j.bh.1001-5965.2020.0134
WANG Rongji, LIU Yongzhi, GUAN Zhenshuiet al. Short-circuit fault diagnosis of SRM power converter based on interval current[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(6): 1085-1094. doi: 10.13700/j.bh.1001-5965.2020.0134(in Chinese)
Citation: WANG Rongji, LIU Yongzhi, GUAN Zhenshuiet al. Short-circuit fault diagnosis of SRM power converter based on interval current[J]. Journal of Beijing University of Aeronautics and Astronautics, 2021, 47(6): 1085-1094. doi: 10.13700/j.bh.1001-5965.2020.0134(in Chinese)

基于区间电流的SRM功率变换器短路故障诊断

doi: 10.13700/j.bh.1001-5965.2020.0134
基金项目: 

国家自然科学基金 61603411

详细信息
    通讯作者:

    刘勇智. E-mail: liuyz_kj@163.com

  • 中图分类号: V242.44

Short-circuit fault diagnosis of SRM power converter based on interval current

Funds: 

National Natural Science Foundation of China 61603411

More Information
  • 摘要:

    功率变换器是开关磁阻电机(SRM)调速系统的核心部件之一,也是系统可靠性最弱的环节。针对传统功率变换器短路故障诊断需增加额外硬件、控制器负担大、诊断范围有限等问题,以非对称半桥式功率变换器为研究对象,在深入分析短路故障模式的基础上,为提取明显的故障特征,对电流传感器进行了重新排布,提出了基于特定转子位置区间内电流的功率变换器故障诊断方法。在某相单独励磁区间内,通过另外两相电流传感器输出值之差与前一相输出值的比值,即可快速定位故障器件。所提方法不受电机相数和控制方式限制,控制器负担小,且无需增加额外硬件。仿真和实验验证了方法的有效性。

     

  • 图 1  ASB功率变换器拓扑结构

    Figure 1.  ASB power converter topology

    图 2  A相工作状态

    Figure 2.  Phase A working states

    图 3  S1短路故障前后电流变化

    Figure 3.  Current changes before and after S1 short-circuit fault

    图 4  S2短路故障前后电流变化

    Figure 4.  Current changes before and after S2 short-circuit fault

    图 5  电流传感器安装位置及检测方式

    Figure 5.  Current sensors arrangement and detection

    图 6  相电流解算结果

    Figure 6.  Phase current solution results

    图 7  A相短路故障前后λ1iLA波形

    Figure 7.  λ1 and iLA waveforms before and after phase A short-circuit fault

    图 8  故障诊断流程

    Figure 8.  Fault diagnosis flowchart

    图 9  A相双管同时短路仿真波形

    Figure 9.  Simulation waveforms of phase A double transistor short circuit at the same time

    图 10  实验结构框图

    Figure 10.  Experimental structure block diagram

    图 11  控制系统框图

    Figure 11.  Control system block diagram

    图 12  正常运行时转速、负载突变实验波形

    Figure 12.  Experimental waveforms of sudden changes in speed and load during normal operation

    图 13  S1短路故障实验波形

    Figure 13.  S1 short-circuit fault experimental waveform

    图 14  S2短路故障实验波形

    Figure 14.  S2 short-circuit fault experimental waveform

    图 15  双管先后短路故障实验波形

    Figure 15.  Experimental waveforms of double-switch successive short-circuit fault

    表  1  电机正常运行时单独励磁区间内电流关系

    Table  1.   Current relation in separate excitation interval during normal motor operation

    i AI BI CI
    ib 0 1 2(iLB-iLC) 1 2(iLB-iLA)
    ic 1 2(iLC-iLB) 0 1 2(iLC-iLA)
    ia 1 2(iLA-iLB) 1 2(iLA-iLC) 0
    下载: 导出CSV
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  • 被引次数: 0
出版历程
  • 收稿日期:  2020-04-13
  • 录用日期:  2020-09-04
  • 刊出日期:  2021-06-20

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