Results 21 to 30 of about 3,602 (261)

Model Predictive Control of an Asymmetric Flying Capacitor Converter

open access: yesIEEE Transactions on Industrial Electronics, 2009
Multilevel converters and, in particular, flying capacitor (FC) converters are an attractive alternative for medium-voltage applications. FC converters do not need complex transformers to obtain the DC-link voltage and also present good robustness properties, when operating under internal fault conditions.
Pablo Lezana   +2 more
openaire   +5 more sources

A Novel Dual-Mode Dual-Band Bandpass Filter Based on a Single Ring Resonator [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2020
In this paper, a dual-mode bandpass filter that operates in two different bands is proposed. A circular patch with a small circular hole is set as the basic resonator, and, as the circular hole moves, the linewidth of the ring resonator becomes non ...
Youngje Sung
doaj   +1 more source

Expanded Graphite-Based Materials for Supercapacitors: A Review

open access: yesMolecules, 2022
Supercapacitors have gained e wide attention because of high power density, fast charging and discharging, as well as good cycle performance. Recently, expanded graphite (EG) has been widely investigated as an effective electrode material for ...
Dan Zhang   +5 more
doaj   +1 more source

Carbon-Supported Manganese Dioxide as Electrode Material For Asymmetric Electrochemical Capacitors

open access: yesInternational Journal of Electrochemical Science, 2014
Composites of carbon nanotubes and activated carbon with manganese dioxide (MN MnO2, DN MnO2, AC2 MnO2) were chosen as positive electrodes and activated carbon (AC1) with well-developed surface area as negative electrode.
Ilona Acznik   +3 more
doaj   +1 more source

Analysis of Asymmetric Hybrid Modular Multilevel Topology for Medium-Voltage Front-End Converter Applications

open access: yesEnergies, 2023
Modular multilevel converters (MMCs) have been conceived as an alternative in front-end converter applications to enhance the converter system’s reliability, minimize total harmonic distortion, and improve power quality.
Muhammad Ali   +4 more
doaj   +1 more source

Force on an Asymmetric Capacitor

open access: yes, 2002
25 pages, new version has corrections of typos and wording, and additional references added. This version is to be published as an Army Research Laboratory Technical Report (in press, March 2003)
Bahder, Thomas B., Fazi, Chris
openaire   +2 more sources

Lithium-Ion Capacitors: A Review of Design and Active Materials

open access: yesEnergies, 2021
Lithium-ion capacitors (LICs) have gained significant attention in recent years for their increased energy density without altering their power density.
Jacob J. Lamb, Odne S. Burheim
doaj   +1 more source

Design of low stress and high efficiency asymmetric half-bridge converter

open access: yesDianzi Jishu Yingyong, 2018
Asymmetrical half bridge converter has problems that wide power output efficiency is not ideal, the voltage and current stress is large, and rectifier diode has voltage ringing problem. So a low stress and high efficiency asymmetric half-bridge converter
Yao Yueqin, Lu Zhengkai
doaj   +1 more source

Asymmetrical Modular Multilevel Converter (A-MMC) with Mixed Cell Sub-Modules (SM) for Improved DC Fault Blocking Capability and Reduced Component Count

open access: yesMajlesi Journal of Electrical Engineering, 2023
In this article, asymmetrical modular multilevel converter (A-MMC) topology using mixed cell (SM) with DC-side fault blocking capability and the reduced component count is proposed.
Himanshu N Chaudhari, Pranav B Darji
doaj   +1 more source

Prediction of Gap Asymmetry in Differential Micro Accelerometers

open access: yesSensors, 2012
Gap asymmetry in differential capacitors is the primary source of the zero bias output of force-balanced micro accelerometers. It is also used to evaluate the applicability of differential structures in MEMS manufacturing.
Xiaoping He   +4 more
doaj   +1 more source

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