Results 21 to 30 of about 201,036 (148)

Lightning Impulse Voltage Stresses In Underground Cables

open access: yesJournal of Physics: Conference Series, 2023
Abstract Underground power cables are crucial for transmission and distribution. Lightning can stress their insulation, but not directly. So, impulse cable testing is studied. This research examines the cable’s transient response to standard and non-standard lightning impulse voltage waveforms.
M S Laili   +4 more
openaire   +1 more source

Reliability modelling and analysis on MMC for VSC-HVDC by considering the press-pack IGBT and capacitors failure

open access: yesThe Journal of Engineering, 2019
Modular multi-level converter (MMC) with press-packing IGBT devices is the popular and key equipment of VSC-HVDC system, its reliability is directly related to the equipment safe operation.
Li Hui   +6 more
doaj   +1 more source

Virtual prototype and GaN HEMT based high frequency LLC converter design

open access: yesThe Journal of Engineering, 2019
Gallium nitride (GaN) high-electron-mobility transistor (HEMT) with the merits of the fast switch speed, low on resistance and low switch loss is applicable to high-frequency LLC converters.
Long Xiao   +4 more
doaj   +1 more source

Comprehensive comparison and analysis of non-inverting buck boost and conventional buck boost converters

open access: yesThe Journal of Engineering, 2019
The non-inverting buck boost (NIBB) converter has attracted significant attention in recent years, as it shares ground between input and output, and the voltage stress of switches is lower.
Xing Weng   +6 more
doaj   +1 more source

Design Considerations and Performance Investigation of a Five-Level Cascaded Multilevel LLC Boost DC–DC Converter

open access: yesIEEE Access, 2023
This work proposes a cascaded five-level resonant boost “DC-DC converter with variable frequency control that is aimed at achieving a wide load and input voltage variation, remarkable efficiency, and zero voltage switching (ZVS) to meet the strict
Ali Bughneda   +4 more
doaj   +1 more source

SIMULATION AND EXPERIMENTAL RESULTS FOR THE CLOSED LOOP CONTROLLED DC TO DC FORWARD CONVERTER [PDF]

open access: yesActa Electrotechnica et Informatica, 2017
A Closed loop controlled DC to DC forward converter is a requisite for the server SMPS system. High efficiency, Isolation, Steady state voltage, Transient response, High switching frequency, reduced noises and range of steady state are all necessary ...
A. Palamalai VIJAYAKUMAR   +1 more
doaj   +1 more source

A Non-Inverting High Gain DC-DC Converter With Continuous Input Current

open access: yesIEEE Access, 2021
High gain DC-DC converters are increasingly being used in solar PV and other renewable generation systems. Satisfactory steady-state and dynamic performance, along with higher efficiency, is a pre-requirement for selecting the converter for these ...
Arshad Mahmood   +9 more
doaj   +1 more source

Analysis and Design of a New Single Switch Non-Isolated Buck-Boost dc-dc Converter [PDF]

open access: yesJournal of Operation and Automation in Power Engineering, 2020
In this paper, a new transformerless buck-boost converter based on ZETA converter is introduced. The proposed converter has the ZETA converter advantages such as, buck-boost capability and input to output DC insulation.
M. R. Banaei   +2 more
doaj   +1 more source

Single Switch Module Type DC-DC Converter With Reduction in Voltage Stress

open access: yesIEEE Access, 2022
This paper proposes a new generalized switched-inductor-capacitor module for a non-isolated dc-dc converter with low voltage dc source applications. Further, the proposed module can be extended to an $n$ number of modules to achieve high voltage gain ...
Dhafer Almakhles   +4 more
doaj   +1 more source

A New Circuit Design of Two-Switch Buck-Boost Converter

open access: yesIEEE Access, 2018
A conventional two-switch buck-boost (TSBB) converter can operate in buck, boost, and buck-boost modes. This paper introduces a new topology for a two-switch buck-boost converter with the same operation modes.
Hai Young Jung   +3 more
doaj   +1 more source

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