Results 31 to 40 of about 820,288 (203)

A Discontinuous Modulation Method with Variable Clamping Interval Width of the Modular Multilevel Converter

open access: yesWorld Electric Vehicle Journal, 2022
The modular multilevel converter (MMC) has been widely used because of the advantages of easier expansion, lower harmonic distortion and higher output voltage level.
Xin Gu   +3 more
doaj   +1 more source

Resistive switching in ZrO2 films: physical mechanism for filament formation and dissolution [PDF]

open access: yes, 2014
Resistive switching devices, also called memristors, have attracted much attention due to their potential memory, logic and even neuromorphic applications.
MacLaren, DA   +2 more
core   +1 more source

S frame design for multiple description video coding [PDF]

open access: yes, 2005
Multiple description (MD) video coding generates several descriptions so that any subset of descriptions can reconstruct video, which provides much error resilience. But most of the current MD video coding schemes are for two descriptions and for "on-off"
Bull, DR, Canagarajah, CN, Wang, D
core   +2 more sources

Precise modelling of switching and conduction losses in cascaded h-bridge multilevel inverters [PDF]

open access: yes, 2014
Nowadays, voltage source multilevel inverters are being used extensively in industry due to its many advantages, compared to conventional two level inverters, such as higher output voltage at low switching frequency, low voltage stress(dv/dt), lower ...
Alamri, B, Darwish, M
core   +1 more source

Application of a Novel ARCP Circuit in UPS

open access: yesJournal of Harbin University of Science and Technology, 2017
In order to reduce the loss of the power switching device and improve the efficiency of the UP system,the ARCP soft switching technology can be used.
MA Jun-jie   +3 more
doaj   +1 more source

Power Quality Analysis of a Hybrid Microgrid-Based SVM Inverter-Fed Induction Motor Drive with Modulation Index Diversification

open access: yesEnergies, 2022
The effects of varying modulation indices on the current and voltage harmonics of an induction motor (IM) powered by a three-phase space vector pulse-width modulation (SVM) inverter are presented in this research.
Subramanian Vasantharaj   +3 more
doaj   +1 more source

A Switching Converter Losses Decreasing Method

open access: yesProceedings of Tomsk State University of Control Systems and Radioelectronics, 2022
A signal timing calculation method to control power switches of bidirectional switching converter (SC) with high efficiency is proposed. The method is applicable for MOSFET-based cascaded boost-buck converter, which has a negative offset current flow at the beginning of each conversion period.
O. V. Nepomnyashchiy   +3 more
openaire   +1 more source

Modified Design of Two-Switch Buck-Boost Converter to Improve Power Efficiency Using Fewer Conduction Components

open access: yesApplied Sciences, 2022
In this study, a modified design of a two-switch buck-boost (TSBB) converter is proposed to improve power efficiency using fewer conduction components, and the optimal power range is measured.
Sunghwan Kim   +2 more
doaj   +1 more source

Modeling Inverter Losses for Circuit Simulation [PDF]

open access: yes, 2004
Transformer-like inverter models can represent a very good alternative to common switch-diode models for simulation, reducing convergence problems and/or calculation time.
Fratta, Antonino, Scapino, Federico
core   +1 more source

Asymmetric Split-Gate 4H-SiC MOSFET with Embedded Schottky Barrier Diode for High-Frequency Applications

open access: yesEnergies, 2021
4H-SiC Metal-Oxide-Semiconductor Field Effect Transistors (MOSFETs) with embedded Schottky barrier diodes are widely known to improve switching energy loss by reducing reverse recovery characteristics.
Kyuhyun Cha, Kwangsoo Kim
doaj   +1 more source

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