Results 181 to 190 of about 5,354 (222)

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), 2002
This 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, null Eui-Cheol Nho, B.K. Bose   +2 more
openaire   +1 more source

A new snubber circuit for inverters with GTOs in series

Archiv für Elektrotechnik, 1994
An increase in the power handling capability of forced commutated inverters stipulates a higher operating voltage. A direct approach is to connect GTOs in series. Since the most common snubber circuits for GTO inverters are not suitable for arrangements in series, this paper presents a new snubber topology especially suited for such circuits and ...
M. -M. Bakran, M. Michel
openaire   +1 more source

A summary of resonant snubber circuits for transistors and GTOs

Conference Record of the IEEE Industry Applications Society Annual Meeting, 2003
Various resonant circuits are reviewed and compared in order to unify the different design methods that are available for low-loss snubbers. Two passive resonant snubbers are described in detail, with some design guidelines for selecting all the snubber components.
D. Tardiff, T.H. Barton
openaire   +1 more source

New snubber circuit with passive energyrecoveryfor power inverters

IEE Proceedings - Electric Power Applications, 1996
The paper proposes a new passive circuit for partial snubber-energy recovery in GTO thyristor high-power voltage-source inverters. The analysis and simulations show that the proposed bridge-leg snubber circuit can recover greater than sixty five per cent of the total snubber energy, as well as the freewheel diode reverse recovery energy. This energy is
X. He, B.W. Williams, S.J. Finney, Z. Qian, T.C. Green   +4 more
openaire   +1 more source

Passive soft-switching snubber circuit with energy recovery

2008 Twenty-Third Annual IEEE Applied Power Electronics Conference and Exposition, 2008
This paper describes a passive snubber circuit with energy recovery to the source. This circuit uses only passive components and can work with a full-leg power conversion topology, i.e., using standard IGBT modules. The circuit provides soft-switching, that is ZVS turn off, reduces slew rate, and increases efficiency around 1% under full load ...
Alexander Isurin, Alexander Cook
openaire   +1 more source

Computer-aided design of power transistor inverter snubber circuits

IEE Proceedings B Electric Power Applications, 1987
The conventional voltage-source inverter snubber circuit has been examined in detail by computer simulations. A new snubber arrangement is proposed and analysed. It aims to reduce the transient voltage overshoot without incurring excessive switching losses.
Jackson, RD, Pong, MH
openaire   +2 more sources

Research on a novel active snubber circuit

6th International Conference on Power Electronics and Variable Speed Drives, 1996
In 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
openaire   +1 more source

A large capacity GTO inverter with low-loss snubber circuits

Conference Record of the 1991 IEEE Industry Applications Society Annual Meeting, 1993
A large-capacity inverter using high-power gate turn-off (GTO) thyristors that can be used instead of a cycloconverter in AC drives is presented. With the techniques of multiple configuration and GTO series connection, the inverter capacity is increased effectively. High conversion efficiency is obtained by using low-loss snubber circuits for GTOs.
N. Kawakami, S. Ueda, M. Hombu, A. Ueda, Y. Jifuku   +4 more
openaire   +1 more source

Snubber circuits and losses of voltage-source GTO inverters

IEEE Transactions on Power Electronics, 1992
The 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
openaire   +1 more source

Simulation Analysis of Snubber Circuit for SiC MOSFET Inverter

Advanced Materials Research, 2014
SiC MOSFET, as a promising power semiconductor devices, has attracted attention from many laboratories and companies for its super performance in high temperature, high voltage and high frequency applications. To protect the devices from overvoltage induced by parasitic inductance in high frequency applications, snubber circuit is a must. In this paper,
Li Jun Xie, Xian Zheng Liu, Jin Yuan Li, Kun Shan Yu   +3 more
openaire   +1 more source