Results 21 to 30 of about 1,406,505 (216)
Energies, 2019 A SiC MOSFET is a suitable replacement for a Si MOSFET due to its lower on-state resistance, faster switching speed, and higher breakdown voltage. However, due to the parasitic parameters and the low damping in the circuit, the turn-on overcurrent and ...
Jiangui Chen, Yan Li, Mei Liang
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Electromagnetic transient suppression for thyristor switch‐based auto‐passing neutral section system
IET Power Electronics, 2023 The auto‐passing neutral section (ANS), applied in the traction substation or section post (SP), is one of the effective methods to improve the continuity of power supply, and the electromagnetic transient is the key issue impacting its application value.
Wu Liran +3 more
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Considering the Switching Strategy of the Transmitting Wind Power to Deal with the DC Blocking Fault Under the Constraint of Transient Overvoltage [PDF]
Dianli jianshe[Objective] For the power grid with high penetration of new energy，measures such as rapid shut-off or emergency reduction of the power of new energy stations are often used to deal with DC lockout faults，but the cutting will weaken the strength of the ...
MA Qiang, YIN Chunya, QIN Yanhui, MA Xing, TANG Zhipeng
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Analysis of Internal Overvoltages in Transformer Windings during Transients in Electrical Networks
Energies, 2020 Due to the increasing requirements for the reliability of electrical power supply and associated apparatus, it is necessary to provide a detailed analysis of the overvoltage risk of power transformer insulation systems and equipment connected to their ...
Jakub Furgał +2 more
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Switching transients caused by vacuum circuit breakers in collection grids of offshore wind farms
Wind Energy, 2021 In this study, transients that can occur in the collection grids of offshore wind farms were investigated. On the basis of the multiple prestrike and reignition model that can reflect the actual operation of a vacuum circuit breaker (VCB), a switching ...
Jiayuan Tao +6 more
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Research on switching overvoltage suppression of 35 kV shunt reactor
Journal of Physics, Conference Series, 2020 In recent years, a number of equipment abnormal events caused by operating overvoltage have occurred during the interruption of 35 kV shunt reactors, which jeopardizes the safe and stable operation of the grid.
Bing Yu +4 more
semanticscholar +1 more source
Energies, 2016 During the switching on/off of shunt capacitor banks in substations, vacuum circuit breakers (VCBs) are required to switch off or to switch on the capacitive current.
Wenxia Sima +4 more
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Hybrid HVDC circuit breakers with an energy absorption branch of a parallel arrester structure
High Voltage, 2022 Hybrid circuit breakers (CBs) are the most promising technology to isolate DC faults in modular multilevel converter (MMC)‐based DC grids. However, they consist of expensive power electronic components that are sensitive to high overvoltage and ...
Jingqiu Yu +3 more
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Fundamental Modeling of the Switching Transition in High-Speed Power Electronics
IEEE AccessRecent advances in semiconductor technology have paved the way for ultra-fast switching capabilities. This increase in switching speed enhances efficiency, power density, and frequency but also increases overvoltage oscillations at the switching node ...
Francois P. Du Toit, Ivan W. Hofsajer
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The Journal of Engineering, 2018 Overvoltage caused by faults or switching is one of the decisive factors affecting the insulation level of equipment in UHVDC transmission systems.
Xiaoguang Zhu +6 more
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