Results 21 to 30 of about 3,594,756 (300)

Electrical Stress on the Medium Voltage Medium Frequency Transformer

open access: yesEnergies, 2021
This paper proposes an equivalent circuit model to obtain the transient electrical stress quantitatively in medium voltage medium frequency transformers in modern power electronics. To verify this model, transient simulation is performed on a 1.5 kV/1 kHz transformer, revealing voltage overshoot quantitatively between turns and layers of the ...
Zheng Changjiang   +4 more
openaire   +2 more sources

Innovative step-up direct current converter for fuel cellbased power source to decrease current ripple and increase voltage gain

open access: yesETRI Journal, 2022
As for the insufficient nature of the fossil fuel resources, the renewable energies as alternative fuels are imperative and highly heeded. To deliver the required electric power to the industrial and domestic consumers from DC renewable energy sources ...
Ebrahim Salary, Ali Darvish Falehi
doaj   +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

Voltage calculation on low voltage feeders with distributed generation [PDF]

open access: yes, 2014
Includes bibliographical references.The increasing levels of greenhouse gas emission and the continued depletion of fossil fuels have been the driving factors for power utilities to utilize renewable energy sources for power generation.
Namanya, Emmanuel
core   +1 more source

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