Results 191 to 200 of about 5,302 (227)
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Snubber Circuits, Triggering, Cooling, and Protection Devices
1986For 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 ...
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Simulation Analysis of Snubber Circuit for SiC MOSFET Inverter
Advanced Materials Research, 2014SiC 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 +3 more
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Transformerless double-conversion UPS using a regenerative snubber circuit
2009 Brazilian Power Electronics Conference, 2009This paper proposes a transformerless double-conversion UPS, which uses a regenerative Undeland snubber to regenerate the energy from switching losses to the dc bus. The regenerative circuit uses a simple buck-boost QSC (Quasi-Square-Wave) ZVS (Zero Voltage Switching) converter. This auxiliary commutation circuit includes only one active switch and its
Marcos Roberto Reinert +3 more
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DESIGNING OPTIMUM SNUBBER CIRCUITS OR THE TRANSISTOR BRIDGE CONFIGURATION
Electric Machines & Power Systems, 1983ABSTRACT Snubbers are used in power transistor switching circuits to keep the device operation within its Safe Operating Area (SOA) during switching. The conventional series and shunt snubbers are satis -factory in a single transistor circuit. However, these are not satisfactory for a totem pole transistor arrangement.
W. R. PEARSON, P. C. SEN
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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), 2019This 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 +4 more
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Snubber Circuit for High-Power Gate Turn-Off Thyristors
IEEE Transactions on Industry Applications, 1983A snubber circuit calculation model for high-power gate turn-off thyristors (GTO's) was proposed to consider problems which must be investigated for snubber circuit design. The calculated GTO waveforms showed good agreement with experimental values obtained by a GTO chopper circuit for both a resistive and inductive load case. Problems to be considered
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Power Measurement of Snubber Circuit
Korean Society of Technical Education and Training, 2018Geun-Chae Ryu, Chung-Gi Kim
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Snubber Circuit Design for Transformers in an Urban High Rise Office Building
IEEE Transactions on Industry Applications, 2014Transformer 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 ...
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An IGBT turn-on snubber circuit with passive energy recovery
International Journal of Electronics, 1998An inductive turn-on snubber with passive energy recovery for IGBTs used in single ended applications and asymmetrical half bridges is presented. Snubber inductive stored energy at switch turn-off is passively recovered into the load. In so doing, limited capacitive turn-off snubbering is inherently achieved, which reduces IGBT voltage during its tail ...
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