Results 11 to 20 of about 15,608,816 (291)

CFD Simulation of Transonic Flow in High-Voltage Circuit Breaker [PDF]

open access: yesInternational Journal of Chemical Engineering, 2012
A high-voltage circuit breaker is an indispensable piece of equipment in the electric transmission and distribution systems. Transonic flow typically occurs inside breaking chamber during the current interruption, which determines the insulating ...
Xiangyang Ye, Mahesh Dhotre
doaj   +2 more sources

Online monitoring and diagnosis of high voltage circuit breaker faults: feature extraction analysis of vibration signals

open access: yesInternational Journal of Metrology and Quality Engineering, 2019
The development of power grid system not only increases voltage and capacity, but also increases power risk. This paper briefly introduces the feature extraction method of the vibration signal of high voltage circuit breaker and support vector machine ...
Li Long   +4 more
doaj   +2 more sources

Research of Fault Diagnosis Method for High-voltage Circuit Breaker Based on Data Fusio

open access: yesGong-kuang zidonghua, 2010
In order to improve fault diagnosis level of high-voltage circuit breaker, the method of using D-S evidence theory to fuse data obtained by different types of sensors was researched and it was used in fault diagnosis for high-voltage circuit breaker ...
MIAO Hong-xia, WANG Hong-hua
doaj   +1 more source

High efficiency smart voltage regulating module for green mobile computing [PDF]

open access: yes, 2014
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.In this thesis a design for a smart high efficiency voltage regulating module capable of supplying the core of modern microprocessors incorporating dynamic ...
Tapou, Monaf Sabri
core   +7 more sources

Application of Multiscale Entropy in Mechanical Fault Diagnosis of High Voltage Circuit Breaker. [PDF]

open access: yesEntropy (Basel), 2018
Mechanical fault diagnosis of a circuit breaker can help improve the reliability of power systems. Therefore, a new method based on multiscale entropy (MSE) and the support vector machine (SVM) is proposed to diagnose the fault in high voltage circuit ...
Dou L, Wan S, Zhan C.
europepmc   +2 more sources

Environmental Compatible Circuit Breaker Technologies [PDF]

open access: yes, 2021
Recent research and development in the field of high-current circuit breaker technology are devoted to meeting two challenges: the environmental compatibility and new demands on electrical grids caused by the increasing use of renewable energies ...

core   +1 more source

A magnetically isolated gate driver for high-speed voltage sharing in series-connected MOSFETs [PDF]

open access: yes, 2011
A scalable resonant gate drive circuit is described, suitable for driving series-connected MOSFETs in high-voltage, high-speed inverter applications for resistive and capacitive loads.
McNeill, Neville   +4 more
core   +3 more sources

Performance Evaluation and Limitations of Overvoltage Suppression Circuits for Low- and Medium-Voltage DC Solid-State Breakers

open access: yesIEEE Open Journal of Power Electronics, 2021
This paper presents a design and performance evaluation of three different overvoltage suppression circuits employed in a solid-state circuit breaker for medium- to high-power and low- to medium-voltage DC grids.
Andreas Giannakis, Dimosthenis Peftitsis
doaj   +1 more source

Simulation of supersonic flow in high-voltage circuit breakers

open access: yesIET Conference Proceedings, 2023
High-voltage circuit breakers (HVCB) are critical protection and control equipment in the electric transmission and distribution system. Analysis of the arc quenching process in the nozzle through modelling and simulation is a key stage in the development process of the HVCB.
Qiao, Yujiao   +2 more
openaire   +2 more sources

New two chamber transfer switch for 6500 A commutation current

open access: yesGlobal Energy Interconnection, 2018
HVDC transfer switches are used in different locations in electrode lines of HVDC transmission systems for their reconfigurations. They have to carry and commutate currents to the overload currents of HVDC transmission systems, which increased to 6,400A ...
Lutz-Rüdiger Jänicke   +4 more
doaj   +1 more source

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