Advanced Fault Diagnosis in Power Electronics: Switch Open Faults in DC-Link Shunt Sensor-Less Drives

Lee, Jangho; Choi, Hyeon-Gyu; Lee, Kahyun

doi:10.1007/s42835-024-01871-2

J. Electr. Eng. Technol.

2024

DOI: 10.1007/s42835-024-01871-2

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Advanced Fault Diagnosis in Power Electronics: Switch Open Faults in DC-Link Shunt Sensor-Less Drives

Jangho Lee,

Hyeon-Gyu Choi,

Kahyun Lee

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Diagnostics on Power Electronics Converters by Means of Autoregressive Modelling

Diversi,

Sandrolini,

Simonazzi

et al. 2024

Electronics

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Power conversion systems for wireless power transfer (WPT) applications have demanding requirements for continuity of service, besides being operated with stressing environmental conditions. Diagnostic and prognostic programs are thus quite useful and this work shows a novel approach based on the analysis of spectra of an autoregressive (AR) model to recognize a wide range of faulty devices, including incipient faults, when deviations from nominal parameters begin to manifest. AR modeling provides cleaner and easier to interpret spectra, where only the salient features remain, and they are more sensitive to variations in the corresponding time domain waveforms. A log spectral distance is calculated that successfully separates healthy and faulty states of the feeding single-phase inverter, even in challenging scenarios of poor signal-to-noise ratio.

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Diagnostics on Power Electronics Converters by Means of Autoregressive Modelling

Diversi,

Sandrolini,

Simonazzi

et al. 2024

Electronics

View full text Add to dashboard Cite

show abstract

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Advanced Fault Diagnosis in Power Electronics: Switch Open Faults in DC-Link Shunt Sensor-Less Drives

Cited by 1 publication

References 13 publications

Diagnostics on Power Electronics Converters by Means of Autoregressive Modelling

Diagnostics on Power Electronics Converters by Means of Autoregressive Modelling

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