Results 1 to 10 of about 677 (162)

Analysis of the Zero Overvoltage Switching Phenomenon

open access: yesIEEE Access, 2022
In common understanding, the fast switching speed of wide-bandgap devices leads to high overvoltage and oscillations, if no countermeasures are taken. Those countermeasures were introduced in the past, and include methods such as build-in gate resistors ...
Nico Schmied, Stefan Matlok, Martin Marz
doaj   +3 more sources

Analysis on switching overvoltage and suppression method of cable joint in 500 kV cable line

open access: yesEnergy Reports, 2021
The breakdown accident of cable joint occurs frequently when the sheath overvoltage cable line is closed, but the cable joint is ignored or simply treated in the previous overvoltage simulation of cable system.
Hongtao Ren, Ying Zhang
doaj   +3 more sources

Analysis on switching overvoltage of 500 kV GIS disconnector

open access: yesEnergy Reports, 2022
The 500 kV GIS disconnector of a pumped storage power station is detected to have the risk of operating overvoltage breakdown of the gas chamber. In this paper, the causes of the operating overvoltage of the disconnector of GI equipment are analyzed, and
Hongtao Ren
doaj   +3 more sources

Impact of High Switching Speed and High Switching Frequency of Wide-Bandgap Motor Drives on Electric Machines

open access: yesIEEE Access, 2021
The emergence of fast-switching wide-bandgap (GaN, SiC) power electronics devices has enabled motor drive systems to achieve high efficiency, power density, control bandwidth and high-level of integration.
Yipu Xu   +6 more
doaj   +1 more source

Analysis of suppression switching overvoltage for CRAFT power supply

open access: yesEnergy Reports, 2022
In order to solve the problem of switching overvoltage for CRAFT, an optimal design is put forward to suppress overvoltage, which aims to enable the converter thyristor work normal.
Yalong Yang   +4 more
doaj   +1 more source

CVT-Based Switching Overvoltage Measurement of UHV Converter Station under Complex Electromagnetic Environment

open access: yesZhongguo dianli, 2022
UHV converter station is prone to produce switching overvoltage during switching operation, However, due to its high voltage level, strong electromagnetic interference and other factors, there is still no effective means to measure the overvoltage ...
Rong WANG   +4 more
doaj   +1 more source

Investigation of a Low-Speed Commutation Voltage Shock Problem in Three-Level ANPC Inverter with Hybrid Modulation Mode

open access: yesMachines, 2023
With the development of the photovoltaic industry; there will be an increasing demand for efficient, high-power density, and low-cost grid interface converters.
Jian Yu   +4 more
doaj   +1 more source

Peducing the frequency of switching overvoltage in generator networks

open access: yesИзвестия высших учебных заведений: Проблемы энергетики
THE PURPOSE of the study is to study the problem of switching overvoltages in 10 kV generator networks. Using the Matlab Simulink package, create a model of common auxiliaries of a 10/0.4 kV power station, calculate the overvoltage at different sections ...
R. A. Belsky   +3 more
doaj   +2 more sources

Energy Storage System Control Strategy for Restraining Overvoltage Caused by Switching Non-Load Power Transmission Lines

open access: yesIEEE Access, 2021
During the switching operation of the non-load power transmission lines, the undisired switching overvoltage issue is inevitable, causing grid voltage oscillations, waveform distortion and other phenomena at the end of the non-load power transmission ...
Bo Yang   +4 more
doaj   +1 more source

Insulation stresses of power equipment exposed to non-standard overvoltage waveforms [PDF]

open access: yesZbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2022
During its operation, electrical equipment is constantly exposed to overvoltages of various waveforms, such as lightning discharges, switching operations, faults, etc.
Jasika Ranko   +2 more
doaj   +1 more source

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