Fault diagnosis technology based on Wigner–Ville distribution in power electronics circuit

2011 ◽  
Vol 98 (9) ◽  
pp. 1247-1257 ◽  
Author(s):  
Wang Rongjie ◽  
Zhan Yiju ◽  
Chen Meiqian ◽  
Zhou Haifeng
Keyword(s):  
Fault Diagnosis ◽  
Power Electronics

Diagnosis of Inverter Drives Faults

2015 ◽  
Vol 792 ◽  
pp. 147-154 ◽  
Author(s):  
Alexander Kislov ◽  
Argyn Kaidar ◽  
Bauyrzhan Shapkenov
Keyword(s):  
Fault Diagnosis ◽  
Power Electronics ◽  
Electric Drives

This article represents research on fault diagnosis of inverter electric drives. It puts more emphasis on power electronics and drives. The paper begins with the diagnostics of systems with conventional inverter drives, because knowledge of the fault diagnosis in conventional inverter can be used for its applications in other topologies of inverter drives. Therefore, the article describes several methods for troubleshooting.

Fault Diagnosis Technology for Power Electronics Rectifier Based on Wavelet Packet

2011 ◽  
Vol 317-319 ◽  
pp. 1215-1218 ◽  
Author(s):  
Qing Hu ◽  
Rong Jie Wang ◽  
Lian Shi Lin
Keyword(s):  
Neural Network ◽  
Fault Diagnosis ◽  
Power Electronics ◽  
Feature Vector ◽  
Wavelet Packet ◽  
Fault Pattern ◽  
Multi Scale ◽  
Wavelet Packet Transformation ◽  
Diagnosis Method

The paper presents on power electronics controlled rectifier faults diagnose technology based on the combination wavelet packet transformation and neural network mainly. By using the character of wavelet packet multiresolution, fault signal is decomposed at multi-scale, orthogonalation and normalization, extract feature vector, which as training input of neural network, and design classifier of fault pattern. The validity and feasibility of the fault diagnosis method is demonstrated by simulation. this method can quite accurately diagnosis fault and define fault element for power electronics controlled rectifier, and the diagnosis precision is high, the method has very good practical value and apply future on solving power electronics controlled rectifier fault diagnosis.

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