Diagnosis method of open-circuit fault for T-type three-level inverter based on residual voltage
| Autor: | Danjiang Chen, Shaozhong Zhang, Yutian Liu, Junwei Zhou |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Computer science
Open-circuit voltage 020208 electrical & electronic engineering 05 social sciences General Engineering Hardware_PERFORMANCEANDRELIABILITY 02 engineering and technology Fault (power engineering) Computer Science Applications Computational Mathematics Three level inverter Control theory Residual voltage 0502 economics and business Hardware_INTEGRATEDCIRCUITS 0202 electrical engineering electronic engineering information engineering 050211 marketing |
| Zdroj: | Journal of Computational Methods in Sciences and Engineering. 20:1143-1153 |
| ISSN: | 1875-8983 1472-7978 |
| DOI: | 10.3233/jcm-204217 |
| Popis: | Multilevel inverter topologies have been widely used in applications of wide-power range and fault diagnosis of such circuits is becoming more and more important. T-type three-level inverters have advantages in efficiency compared to common neutral-point-clamped inverters. This paper proposes a new diagnosis method of an open-circuit (OC) fault for a T-type three-level inverter. The method is implemented by measuring the phase voltage of the circuit and comparing it with the reference voltage of the circuit to obtain a residual voltage. Firstly, according to the analysis of different current conduction paths of the circuit, the voltage level changes of the circuit bridge voltage and phase voltage in different device open modes are studied. Then, based on the above analysis, a device open-circuit fault diagnosis scheme is proposed based on the residual voltage. Finally, simulation and experimental results show that the proposed method can identify the faulty switch exactly and quickly. |
| Databáze: | OpenAIRE |
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