基于核密度估计的逆变器故障诊断方法
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摘要
本文将时间序列相似性匹配引入到逆变器故障诊断中。针对两电平三相电压源逆变器的开路故障,提出了一种基于核密度估计的实时快速诊断法。其包括三个步骤:数据变换、相似性度量和故障诊断。该方法是基于电流的故障诊断法,因此是低耗的。最后通过实验验证了该方法的高效性。
In this paper, A real-time, fast diagnosis method based on kernel density estimation is proposed for the open circuit fault of two-level three-phase voltage source inverter. It consists of three steps: data transformation, si milarity measurement, and fault diagnosis. The proposed method is current-based sharing the current sensors that are used for the current regulators,hence it is low-cost. At the end, the high efficiency of the proposed method are validated by experiments.
In this paper, A real-time, fast diagnosis method based on kernel density estimation is proposed for the open circuit fault of two-level three-phase voltage source inverter. It consists of three steps: data transformation, si milarity measurement, and fault diagnosis. The proposed method is current-based sharing the current sensors that are used for the current regulators,hence it is low-cost. At the end, the high efficiency of the proposed method are validated by experiments.
引文
[1]姜保军,安群涛,路梅.三相电机驱动系统逆变器故障补救与容错策略[J].电气传动,2015,5:3-10.
[2]F.W.B.T.-C.of the I.I.E.S.Fuchs.Some Diagnosis Methods for Voltage Source Inverters In Variable Speed Drives with Induction Machines A Survey[C].Industrial Electronics Society,IECON‘03.The 29th Annual Conference of the IEEE,2,2003.
[3]安群涛,孙力,孙立志,等.三相逆变器开关管故障诊断方法研究进展[J].电工技术学报,2011,26(4):135-144.
[2]F.W.B.T.-C.of the I.I.E.S.Fuchs.Some Diagnosis Methods for Voltage Source Inverters In Variable Speed Drives with Induction Machines A Survey[C].Industrial Electronics Society,IECON‘03.The 29th Annual Conference of the IEEE,2,2003.
[3]安群涛,孙力,孙立志,等.三相逆变器开关管故障诊断方法研究进展[J].电工技术学报,2011,26(4):135-144.