Ui-Min Choi, Frede Blaabjerg, and Kyo-Beum Lee, "Reliability Improvement of a T-Type Three-Level Inverter With Fault-Tolerant Control Strategy," IEEE Transactions on Power Electronics, vol. 30, no. 5, pp. 2660–2673, May 2015. -SCI > Paper

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International Journals Ui-Min Choi, Frede Blaabjerg, and Kyo-Beum Lee, "Reliability Improvement of a T-Type Three-Level Inverter With Fault-Tolerant Control Strategy," IEEE Transactions on Power Electronics, vol. 30, no. 5, pp. 2660–2673, May 2015. -SCI

2015

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This paper proposes a fault-tolerant control strategy for a T-type three-level inverter when an open-circuit fault occurs. The proposed

method is explained by dividing fault into two cases: the faulty condition of half-bridge switches and neutralpoint switches. In case

of the open-circuit fault in a neutral-point switch, two methods will be proposed and compared based on thermal analysis and

neutral-point voltage oscillation. The reliability of T-type inverter systems is improved considerably by the proposed algorithm when

a switch fails. The proposed method does not require any additional components. Simulation and experimental results verify the

validity and feasibility of the proposed fault-tolerant control strategy. 

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