Won-Sang Im, Jang-Mok Kim, Dong-Choon Lee, and Kyo-Beum Lee, “Diagnosis and Fault-Tolerant Control of Three-phase AC-DC PWM Converter Systems,” IEEE Transactions on Industry Applications, vol. 49, no. 4, pp. 1539–1547, Jul./Aug. 2013. -SCI > Paper

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Paper

International Journals Won-Sang Im, Jang-Mok Kim, Dong-Choon Lee, and Kyo-Beum Lee, “Diagnosis and Fault-Tolerant Control of Three-phase AC-DC PWM Converter Systems,” IEEE Transactions on Industry Applications, vol. 49, no. 4, pp. 1539–1547, Jul./Aug. 2013. -SCI

2013

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There is the possibility of an open-switch fault in a three-phase ac–dc pulsewidth-modulation (PWM) converter due to problems with

the switching devices. In this case, the converter causes unbalanced input ac currents including increased harmonics and dc-link

voltage ripples. In this paper, the one-open-switch fault case of six switching elements is analyzed by considering the switching

patterns of space vector PWM and the directions of a faulty phase current to prove the cases of the fault. In addition, this paper

proposes a detection method for open-switch faults and a fault-tolerant control method to minimize the imbalance of the input ac

currents and the voltage ripple of the dc link in a three-phase ac–dc PWM converter. The usefulness of this paper is verified through

experimental results. 

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