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Volume 12
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Article

Open-Switch Fault Diagnosis Algorithm and Tolerant Control Method of the Three-Phase Three-Level NPC Active Rectifier

by
Jun-Hyung Jung
1,
Hyun-Keun Ku
2,
Yung-Deug Son
3 and
Jang-Mok Kim
1,*
1
Department of Electrical and Computer Engineering, Pusan National University, Busan 46241, Korea
2
Converter Station Construction Team, Korea Electric Power Corporation, Naju, Jeollanam-do 58322, Korea
3
Department of Mechanical Facility Control Engineering, Korea University of Technology and Education, Cheonan, Chungnam 31253, Korea
*
Author to whom correspondence should be addressed.
Energies 2019, 12(13), 2495; https://doi.org/10.3390/en12132495
Submission received: 2 June 2019 / Revised: 24 June 2019 / Accepted: 26 June 2019 / Published: 28 June 2019
(This article belongs to the Section F: Electrical Engineering)
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Abstract

This paper proposes a fault diagnosis and tolerant control methods for an open-switch fault caused in a three-phase three-level neutral-point-clamped (NPC) pulse-width modulation (PWM) active rectifier. The open-switch fault in the three-level NPC active rectifier causes a distortion in the input phase current and a ripple in the DC-link capacitor voltage. Therefore, proper fault diagnosis and tolerant control methods are required to prevent additional failures and performance degradation in the rectifier system. This paper conducted a detailed analysis of the effect of the single open-switch fault on the NPC PWM active rectifier and proposed a fault diagnosis method utilizing the DC link voltage and the phase angle of the input grid voltage. Furthermore, this paper proposes a fault-tolerant control method to reduce the effect of the open-switch fault by compensating a distorted reference voltage. The effectiveness of the proposed fault diagnosis and tolerant control methods are verified through experimental results.
Keywords: three-level neutral-point clamped (NPC) active rectifier; open-switch fault; fault diagnosis and tolerant control method; space vector modulation (SVM) three-level neutral-point clamped (NPC) active rectifier; open-switch fault; fault diagnosis and tolerant control method; space vector modulation (SVM)

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MDPI and ACS Style

Jung, J.-H.; Ku, H.-K.; Son, Y.-D.; Kim, J.-M. Open-Switch Fault Diagnosis Algorithm and Tolerant Control Method of the Three-Phase Three-Level NPC Active Rectifier. Energies 2019, 12, 2495. https://doi.org/10.3390/en12132495

AMA Style

Jung J-H, Ku H-K, Son Y-D, Kim J-M. Open-Switch Fault Diagnosis Algorithm and Tolerant Control Method of the Three-Phase Three-Level NPC Active Rectifier. Energies. 2019; 12(13):2495. https://doi.org/10.3390/en12132495

Chicago/Turabian Style

Jung, Jun-Hyung, Hyun-Keun Ku, Yung-Deug Son, and Jang-Mok Kim. 2019. "Open-Switch Fault Diagnosis Algorithm and Tolerant Control Method of the Three-Phase Three-Level NPC Active Rectifier" Energies 12, no. 13: 2495. https://doi.org/10.3390/en12132495

APA Style

Jung, J.-H., Ku, H.-K., Son, Y.-D., & Kim, J.-M. (2019). Open-Switch Fault Diagnosis Algorithm and Tolerant Control Method of the Three-Phase Three-Level NPC Active Rectifier. Energies, 12(13), 2495. https://doi.org/10.3390/en12132495

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