Fault diagnosis of three-level active power filter based on hybrid logic model

Zhenhai Zhang; Lin Niu; Lei Wang; Hongbo Li; Xiaoyu He; Yanqiang Zhai

doi:10.1117/12.2682383

26 May 2023 Fault diagnosis of three-level active power filter based on hybrid logic model

Zhenhai Zhang, Lin Niu, Lei Wang, Hongbo Li, Xiaoyu He, Yanqiang Zhai

Proceedings Volume 12700, International Conference on Electronic Information Engineering and Data Processing (EIEDP 2023); 127001D (2023) https://doi.org/10.1117/12.2682383
Event: International Conference on Electronic Information Engineering and Data Processing (EIEDP 2023), 2023, Nanchang, China

Abstract

With the increase of voltage level and capacity of modern power system, three-level converter, as the main circuit of active power filter, meets the requirement of improving compensation capacity. However, the number of power devices of three-level converter is twice as large as that of two-level converter, and the probability of power device failure is greater, which affects the normal operation of the system. Aiming at the fault of three-level active power filter, this paper studies the fault characteristics of different power components of the main circuit T-type three-level converter when open-circuit fault occurs, applies the hybrid theory to the fault diagnosis of the converter, establishes the normal model and the fault model of different power components when open-circuit fault occurs, and realizes the location of the fault components according to the residual generated by the predicted output and the actual output of the model, the effectiveness of this method is verified by simulation.

Citation Download Citation

Zhenhai Zhang, Lin Niu, Lei Wang, Hongbo Li, Xiaoyu He, and Yanqiang Zhai "Fault diagnosis of three-level active power filter based on hybrid logic model", Proc. SPIE 12700, International Conference on Electronic Information Engineering and Data Processing (EIEDP 2023), 127001D (26 May 2023); https://doi.org/10.1117/12.2682383

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KEYWORDS

Logic

Tunable filters

Instrument modeling

Circuit switching

Bridges

Adaptive optics

Failure analysis

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