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Snubber circuit for diode-clamped four-level inverter and converter

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3 Author(s)
Kim, I.-D. ; Dept. of Electr. Eng., Pukyong Nat. Univ., Pusan, South Korea ; Nho, E.-C. ; Ko, J.-S.

The snubber circuit makes use of Undeland and McMurray snubbers in the basic snubber unit, and can be regarded as a generalised combined Undeland and McMurray snubber. The proposed snubber features fewer components, improved efficiency due to low snubber loss, overvoltage clamping across main switching devices, and no imbalance problem of the blocking voltage. The proposed concept of constructing a snubber circuit for a four-level inverter and converter can apply to any level of converter and inverter

Published in:

Electric Power Applications, IEE Proceedings -  (Volume:148 ,  Issue: 6 )