Ye-Ji Kim, Sang-Hun Kim, Seok-Min Kim, and Kyo-Beum Lee, "Open Fault Diagnosis and Tolerance Control for Grid-Connected Hybrid Active Neutral-Point-Clamped Inverters with Optimized Carrier-Based Pulse Width Modulation," IEEE Access, vol. 8, pp. 145542–145 > Paper

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Paper

International Journals Ye-Ji Kim, Sang-Hun Kim, Seok-Min Kim, and Kyo-Beum Lee, "Open Fault Diagnosis and Tolerance Control for Grid-Connected Hybrid Active Neutral-Point-Clamped Inverters with Optimized Carrier-Based Pulse Width Modulation," IEEE Access, vol. 8, pp. 145542–145551, Aug. 2020. -SCIE

2020

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This paper proposes open fault diagnosis and tolerance control methods for grid-connected hybrid active neutral-point-clamped (ANPC) inverters

with optimized carrier-based pulse width modulation. The hybrid ANPC inverter is composed of silicon carbide metal-oxide-semiconductor field effect

transistors and Si-insulated gate bipolar transistors. Open faults of switch devices lead to the distortion of output currents, inverter performance

degradation, and low reliability. Therefore, the open-circuit fault diagnosis and the tolerance control methods should be handled to improve the

reliability of the inverter. The fault tolerance control methods for grid-connected inverters should also consider the fixed voltage modulation index as

the modulation index is fixed. In this study, the proposed fault tolerance control method handles the open fault without reducing the modulation

index. The implementation of the proposed method is easy and can be conducted through a simple change in the reference waveform. The effectiveness of the proposed fault detection and fault tolerance control methods was verified through the simulation and experimental results.

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