Results 31 to 40 of about 426,824 (203)
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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Energies, 2023 The paper aims to analyze the parameters of prototypes of new overvoltage protection devices for power grids—a multi-chamber insulator arrester (MCA) and a long flashover arrester (LFA). The article presents the research results on determining the actual
Michał Borecki, Maciej Ciuba
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The Journal of Engineering, 2019 In the hierarchically connected ultra-high voltage (UHV) DC projects, the minimum air clearance on the 1000 kV AC side of converter transformer directly affects the layout and area of the valve hall.
Lou Ying +3 more
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Energies, 2020 Harmonic overvoltage in electric railway traction networks can pose a serious threat to the safe and stable operation of the traction power supply system (TPSS).
Qiujiang Liu +4 more
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Energy Reports, 2023 This paper presents a method to estimate the components of the PEM electrolyzer voltage with the dynamic input current. The total voltage can be divided into reversible voltage and irreversible voltage that the former always can be described as a ...
Kai Jing, Chang Liu
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Energies, 2022 High-speed EMUs (electric multiple-units) frequently pass through the phase-separation zone during operation. Overvoltage generated during the operation of the vehicle-mounted circuit breaker has a long duration and high waveform steepness, which ...
Jixing Sun +5 more
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Estimation of New Weighted Controlled Switching Overvoltage by RBFN Model [PDF]
Journal of Operation and Automation in Power Engineering, 2020 Mitigating switching overvoltages (SOVs) and conducting well-suited insulation coordination for handling stresses are very important in UHV transmission Lines. The best strategy in the absence of arresters is controlled switching (CS). Although elaborate
M. Hasanpour +2 more
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Non-parasitic induced transient overvoltage in ANPC topology due to critical switching sequences
, 2023 25542563This paper describes a semiconductor overvoltage in an Active-Neutral-Point-Clamped Converter (ANPC). This overvoltage occurs in case of inductive load when the output voltage of the ANPC changes its polarity.
Kragl, Robert +3 more
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THE RESONANT OVERVOLTAGE IN NON-SINUSOIDAL MODE OF MAIN ELECTRIC NETWORK
Electrical engineering & Electromechanics, 2018 Purpose. The resonant overvoltage arises in main electrical networks as a result of random coincidence of some parameters of circuit and its mode and it may exist for a relatively long time.
V. G. Kuznetsov +4 more
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