Results 21 to 30 of about 242,019 (321)

Designing functional ferroelectric interfaces from first-principles: dipoles and band bending at oxide heterojunctions

open access: yesNew Journal of Physics, 2019
The fundamental phenomena at ferroelectric interfaces have been the subject of thorough theoretical and computational studies due to their usefulness in a large variety of emergent electronic devices, solar cells and catalysts.
Rusu Dorin   +4 more
doaj   +1 more source

Three-level boost converter with zero voltage transition

open access: yesThe Journal of Engineering, 2017
As compared with the traditional boost converter, the three-level boost converter possesses several advantages, such as lower switch voltage stresses and lower inductor current ripple.
Kuo-Ing Hwu   +2 more
doaj   +1 more source

GaN-Based Versatile Waveform Generator for Biomedical Applications of Electroporation

open access: yesIEEE Access, 2020
Biomedical applications often require high-performance power supplies for diagnosis and treatment systems. In particular, modern electroporation techniques for cancer treatment require high-voltage generators with versatile waveform generation.
Hector Sarnago   +5 more
doaj   +1 more source

A new methodology called dice game optimizer for capacitor placement in distribution systems [PDF]

open access: yes, 2020
Purpose. Shunt capacitors are installed in power system for compensating reactive power. Therefore, feeder capacity releases, voltage profile improves and power loss reduces.
Al-Haddad, Kamal   +5 more
core   +3 more sources

Low-Cost System with Transient Reduction for Automatic Power Factor Controller in Three-Phase Low-Voltage Installations

open access: yesEnergies
In power engineering, the importance of maintaining a high power factor in low-voltage electrical installations is known. In power substations for industry, the usual method of coupling is to use an automatic power factor controller which connects ...
Gabriel Nicolae Popa   +1 more
doaj   +1 more source

Modified capacitor voltage balancing sorting algorithm for modular multilevel converter

open access: yesThe Journal of Engineering, 2019
The modular multilevel converter (MMC) with large-scale sub-modules has the advantage of simpler modulation, lower switching frequency, and lower harmonic component, thus would be very promising in voltage source converter (VSC)–high voltage direct ...
Jie Zhang   +5 more
doaj   +1 more source

Modular multilevel converter with DHB energy-balancing channels for medium-voltage adjustable-speed drives

open access: yesThe Journal of Engineering, 2019
This paper presents a modular multilevel converter (MMC) configuration that utilises energy exchange between sub-modules (SMs) of upper and lower arms, for energy rebalancing.
Mohamed S. Diab   +4 more
doaj   +1 more source

Reliability study on DC-link capacitor in fault states of VSI in elective vehicle

open access: yesThe Journal of Engineering, 2019
DC-input side of the inverter to balance input and output power, eliminate voltage fluctuation, and reduce the voltage spike in the input side. The reliability study on DC-link capacitor under fault state is critical to the safe operation of the whole ...
Fang Yao   +3 more
doaj   +1 more source

SIMULTANEOUS ALLOCATION OF MULTIPLE DISTRIBUTED GENERATION AND CAPACITORS IN RADIAL NETWORK USING GENETIC-SALP SWARM ALGORITHM

open access: yesElectrical engineering & Electromechanics, 2020
Purpose. In recent years, the problem of allocation of distributed generation and capacitors banks has received special attention from many utilities and researchers.
Chabane Djabali, Tarek Bouktir
doaj   +1 more source

Effects of Surface Transition and Adsorption on Ionic Liquid Capacitors [PDF]

open access: yes, 2020
Room-temperature ionic liquids (RTILs) are synthetic electrolytes with electrochemical stability superior to that of conventional aqueous-based electrolytes, allowing a significantly enlarged electrochemical window for application as capacitors.
Chao, Huikuan, Wang, Zhen-Gang
core  

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