Results 181 to 190 of about 951 (213)

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

A nondissipative snubber circuit for high-power GTO inverters

IEEE Transactions on Industry Applications, 1989
A 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
exaly   +2 more sources

Impact of Snubber Circuit Inductance on Damping Late Currents in a Pulsed Power Circuit

2018 20th International Symposium on High-Current Electronics (ISHCE), 2018
The discharge in a repetitively pulsed TE gas laser begins its lasing cycle by being homogenous in nature but quickly (10s of ns later) transitions into filamentary mode due to plasma discharge instabilities. The filamentary discharge transitions into an arc mode which presents a very low impedance path for the pulsed power circuit.
Harpreet Singh Grover, Francis Dawson, Ed Williams   +2 more
openaire   +1 more source

Snubber circuit for diode-clamped four-levelinverter and converter

IEE Proceedings - Electric Power Applications, 2001
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 ...
I.-D. Kim, E.-C. Nho, J.-S. Ko
openaire   +1 more source

Comparative study of RC snubber configurations in switching circuits

2019 IEEE 15th Brazilian Power Electronics Conference and 5th IEEE Southern Power Electronics Conference (COBEP/SPEC), 2019
This article shows a study of the dissipative passive RC snubber configurations, by using theoretical and experimental data. For that, the buck converter is use to analyse the impact of these devices in the circuit. Three projects of the RC snubber are analyse and compare, with that the device that shows a better performance in the circuit will be ...
Ana Carolina Moreira, Daniel Cesar Piccoli, Julio Cesar Lopes de Oliveira, Luiz Fernando Henning, Rodrigo Jose Piontkewicz   +4 more
openaire   +1 more source

Design and Simulation of RC-Snubber Circuits for IGCTs in Series

2012 Asia-Pacific Power and Energy Engineering Conference, 2012
IGCTs are connected in series for higher voltage applications. The paper takes ABB's 5SHY35l4510 IGCT as the research object. A RC-snubber circuit is designed for series-connected IGCTs. The values of capacity and resistance in this RC-snubber circuit are calculated. Then, the RC-snubber circuit is simulated by PSIM and experimented in laboratory.
Renwang He, Wanying Qiu
openaire   +1 more source

Snubber Circuit Design for Transformers in an Urban High Rise Office Building

IEEE Transactions on Industry Applications, 2014
Transformer failures have in recent years led to the development of resistor–capacitor snubber circuits for the protection of the transformer and winding insulation from the damaging effects of high-voltage high-frequency transients. Transformer insulation may be damaged if the basic insulation level is exceeded, during turn-to-turn insulation, when ...
openaire   +1 more source

Snubber Circuits, Triggering, Cooling, and Protection Devices

1986
For power semiconductors to operate properly in converter connections three prerequisites must be satisfied: 1. They should be protected from undue transient voltage and current stresses. 2. Controlled power semiconductors such as thyristors or power transistors need suitable drive units to generate the necessary gate or base ...
openaire   +1 more source