A novel diagnosis method based on flexible error voltage for IGBTs open-circuit faults in voltage-source inverters

2015 ◽  
Author(s):  
Yuxi Wang ◽  
Zhan Li ◽  
Liaoyuan Lin
Keyword(s):  
Open Circuit ◽  
Voltage Source ◽  
Voltage Source Inverters ◽  
Diagnosis Method

scholarly journals A Hybrid System Model-Based Open-Circuit Fault Diagnosis Method of Three-Phase Voltage-Source Inverters for PMSM Drive Systems

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1251 ◽  
Author(s):  
Tao Chen ◽  
Yuedou Pan ◽  
Zhanbo Xiong
Keyword(s):  
Fault Diagnosis ◽  
Hybrid System ◽  
Open Circuit ◽  
System Model ◽  
Voltage Source ◽  
Phase Voltage ◽  
Voltage Source Inverters ◽  
Three Phase ◽  
Diagnosis Method ◽  
Drive Systems

This paper presents an open-circuit (OC) fault diagnosis method of three-phase voltage-source inverters (VSIs) for permanent magnet synchronous motor (PMSM) drive systems based on the hybrid system model (HSM). On the basis of phase voltage analysis, the HSM of the PMSM-inverter system was established, which can describe the system more accurately. To quickly diagnose whether the fault occurs, a current estimator was constructed based on the healthy HSM. Different fault types of the VSI can be simulated synchronously by the HSM, and the similarity between each simulated fault type and the actual one is evaluated based on the Euclidean distance method. Therefore, the fault isolation can be carried out according to the characteristics of Euclidean distances. The proposed method has the advantages of fast diagnosis speed and strong robustness, and it does not require additional sensors. By the presented diagnosis algorithm, the fault can be detected and isolated within a time interval about 5% and 10% of the current fundamental wave period, respectively. The simulation and experimental results verify the effectiveness of the proposed method.

A Fast and Robust Diagnostic Method for Multiple Open-Circuit Faults of Voltage-Source Inverters Through Line Voltage Magnitudes Analysis

2020 ◽  
Vol 35 (5) ◽  
pp. 5205-5220
Author(s):  
Xun Wu ◽  
Chun-Yang Chen ◽  
Te-Fang Chen ◽  
Shu Cheng ◽  
Zhi-Hong Mao ◽  
...  
Keyword(s):  
Diagnostic Method ◽  
Open Circuit ◽  
Voltage Source ◽  
Line Voltage ◽  
Voltage Source Inverters

scholarly journals Open-Switch Fault Diagnosis Method in Voltage-Source Inverters Based on Phase Currents

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 63619-63625 ◽  
Author(s):  
Zhang Jian-Jian ◽  
Chen Yong ◽  
Chen Zhang-Yong ◽  
Zhou Anjian
Keyword(s):  
Fault Diagnosis ◽  
Voltage Source ◽  
Voltage Source Inverters ◽  
Open Switch ◽  
Diagnosis Method
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