Results 181 to 190 of about 5,302 (227)
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Snubber circuits and losses of voltage-source GTO inverters
IEEE Transactions on Power Electronics, 1992The power dissipation of series and parallel snubbers in gate turn-off thyristor (GTO) inverters is investigated. New circuits using optimized snubbers are simulated and compared and solutions that allow the recovery of the energy stored in the snubbers are reported.
BRAMBILLA, ANGELO MAURIZIO, E. Dallago
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RC Snubber Circuit of Large Gap Magnetic Driven System
Applied Mechanics and Materials, 2011Based on the single chip microcomputer (SCM) control theory, the control circuit of magnetic driving system of axial flow blood pump is designed. For the easy damage of TIP 122, which is used as the power switch of control circuit, RC snubber circuit is designed by analysis and experiments. And then an optimal matching of the key parameters is obtained
Yun Long Liu, Jian Ping Tan, Yan Xu
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Dual-inductive snubber circuit design for three-level inverter
2007 European Conference on Power Electronics and Applications, 2007A new circuit design for the protection of e.g. multi level converters will be presented in this paper. The so-called 'dual-inductive snubber circuit design for three-level converter' will optimize the number of the total snubber circuit elements and the behavior RCD/RLD snubber circuit especially in the direction of over-voltage and over-current, and ...
J. Al-Nasseir, Ch. Weindl, G. Herold
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A Brief Review of Snubber Circuits for Flyback Converter
2018 3rd International Conference for Convergence in Technology (I2CT), 2018This paper reviews the different snubber circuit topologies for flyback converters. At low power levels, flyback converters are required to operate at fast switching frequencies to achieve higher power densities, low flux linkage and reduced converter size. However, at high frequencies, switching losses in flyback converters increase along with voltage
Sayeb Mohammad Tadvin +2 more
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A new snubber circuit for multilevel inverter and converter
Conference Record of 1998 IEEE Industry Applications Conference. Thirty-Third IAS Annual Meeting (Cat. No.98CH36242), 2002This paper proposes a new snubber circuit for multilevel inverter and converter. The snubber circuit makes use of the Undeland snubber as a basic snubber unit and can be regarded as a generalized Undeland snubber. The proposed snubber keeps such good features as fewer number of components, improved efficiency due to low loss snubber, capability of ...
null In-Dong Kim +2 more
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Research on a novel active snubber circuit
6th International Conference on Power Electronics and Variable Speed Drives, 1996In this paper a novel active snubber circuit is proposed, which is formed by introducing an active transistor to the traditional snubber circuit. The active transistor shares the control signal of the main power transistor. The snubber circuit can soften the switching process and make high-frequency-operation and high efficiency possible. The simulated
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A nondissipative snubber circuit for high-power GTO inverters
IEEE Transactions on Industry Applications, 1989A novel snubber circuit for high-power GTO inverters is composed of only passive components which, idealized, produce no losses. The stored energy in the turn-on and turn-off snubbers is completely recovered during a switching cycle. In the absence of a permanent circulating current in the recovery transformer, the minimum on-time duration of one half ...
J. Holtz, S. Salama, K.H. Werner
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Active Snubber Energy Recovery Circuit for Series-Connected IGBTs
IEEE Transactions on Power Electronics, 2011This paper presents a novel active snubber recovery circuit for series-connected insulated gate bipolar transistors (IGBTs). The proposed technique allows turnon and turnoff switching of the series IGBTs to be controlled and balanced through conventional snubber effects, but the configuration includes active circuitry to recover into the dc supply, the
Lim, T. C. +2 more
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Snubber circuit for diode-clamped four-levelinverter and converter
IEE Proceedings - Electric Power Applications, 2001The 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 ...
I.-D. Kim, E.-C. Nho, J.-S. Ko
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Snubber Circuit of Bidirectional Solid State DC Circuit Breaker Based on SiC MOSFET
2018 IEEE Energy Conversion Congress and Exposition (ECCE), 2018This paper focuses on the design of a snubber circuit for Solid State Circuit Breaker (SSCB) based on SiC MOSFET. It analyzes the operation principle and pros and cons of existing snubber circuit. Based on the analysis, a novel bidirectional snubber circuit suppressing fault current quickly and simultaneously protecting overvoltage on SiC MOSFET is ...
Dongho Shin +3 more
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