Won Seok Jung, Ye-Ji Kim, Seok-Min Kim, and Kyo-Beum Lee, "Open Switch Fault Tolerance Control of Active NPC Inverters With HF/LF Modulation," Journal of Institute of Korean Electrical and Electronics Engineers, vol. 24, no. 1, pp. 170–177, Mar. 2020. > Paper

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Domestic Journals Won Seok Jung, Ye-Ji Kim, Seok-Min Kim, and Kyo-Beum Lee, "Open Switch Fault Tolerance Control of Active NPC Inverters With HF/LF Modulation," Journal of Institute of Korean Electrical and Electronics Engineers, vol. 24, no. 1, pp. 170–177, Mar. 2020.

2020

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This paper presents an open-fault tolerance control method for active neutral point clamped (ANPC) inverter with high frequency/low

frequency (HF/LF) modulation. By applying the ANPC inverter with SiC MOSFETs and Si IGBTs, the system efficiency and performance

can be improved compared to a Si-based inverter. HF/LF modulation is used for a megawatt-scale inverter to minimize the

commutation loop. The open-switch failure in megawatt-scale inverter causes severe damage to load and huge expenses when the

inverter has been shut-down. The proposed tolerance control of open-switch failure provides continuous operation and improved

reliability to the ANPC inverter. The effectiveness of the proposed fault tolerance control is verified by simulation results. 

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