Results 61 to 70 of about 552 (238)

GWO-NR Hybrid Method for Selective Harmonic Elimination in Multilevel Inverter for Distributed Energy Systems

open access: yesIEEE Access
This article presents a hybrid method to solve the selective harmonic elimination (SHE) problem for an adaptive DC bus multilevel inverter (MLI) topology.
Peeyush Kala   +6 more
doaj   +1 more source

Real-Time Selective Harmonic Mitigation Technique for Power Converters Based on the Exchange Market Algorithm

open access: yesEnergies, 2020
Hand-in-hand with the smart-grid paradigm development, power converters used in high-power applications are facing important challenges related to efficiency and power quality.
Abraham Marquez Alcaide   +9 more
doaj   +1 more source

Generating Unconventional Spin‐Orbit Torques With Patterned Phase Gradients in Tungsten Thin Films

open access: yesAdvanced Materials, EarlyView.
ABSTRACT A key aim in spintronics is to achieve current‐induced magnetization switching via spin‐orbit torques without external magnetic fields. For this, the focus of recent work has been on introducing controlled lateral gradients across ferromagnet/heavy‐metal devices, giving variations in thickness, composition, or interface quality.
Lauren J. Riddiford   +9 more
wiley   +1 more source

Resonant Domain Wall Dynamics in a Three‐Dimensional Magnetic Nano Double Helix

open access: yesAdvanced Materials, EarlyView.
3D magnetic nanostructures promise exciting possibilities for magnetization dynamics. However, experimental realizations remain scarce. In nanoprinted cobalt double helices, time‐resolved X‐ray microscopy reveals harmonic domain wall dynamics. Simulations identify the mode and additional higher‐frequency resonances, revealing a rich dynamic landscape ...
Pamela Morales‐Fernández   +15 more
wiley   +1 more source

Large‐Scale Determination of Frontier Orbital Energies of Disordered Small‐Molecule Organic Semiconductors Using Exciplex Emission Spectra

open access: yesAdvanced Materials, EarlyView.
ABSTRACT Accurately knowing the frontier orbital energies of the structurally disordered small‐molecule organic semiconductors that are used in optoelectronic devices such as organic light‐emitting diodes is required to rationally improve their performance. Here, we show that these energies can be deduced with a large accuracy from the peak energies of
Christian B. McDonald   +7 more
wiley   +1 more source

Particle swarm optimization effectiveness for selectiveharmonic elimination in multilevel inverters at varyingoutput levels

open access: yesMajlesi Journal of Electrical Engineering
Multilevel inverters (MLI) play a pivotal role in diverse applications, notably solar power generation, owing to their capacity for generating high-quality, multiple-level output voltages with reduced total harmonic distortions (THD) in comparison to ...
Muhammad Najwan Hamidi, Dahaman Ishak
doaj   +1 more source

Stability Enhancement of Islanded Single-Phase Community Microgrids Using Multilevel Inverters with Selective Harmonic Elimination (SHE) Modulation

open access: yes
The fast expansion of distributed renewable energysources has hastened the development of islandedcommunity microgrids, where maintaining voltagestability, power quality, and system dependabilityis still a major problem. Multilevel inverters(MLIs) have developed as a viable option due totheir ability to produce high-quality output voltagewhile reducing
Dr. Sridevi A, Dr.Umadevi. D
openaire   +2 more sources

Breaking Bottlenecks in Solid Electrolyte Discovery With Large Artificial Intelligence Models

open access: yesAdvanced Materials, EarlyView.
Large AI models are presented as a route to break key bottlenecks in solid electrolyte discovery by linking materials databases, machine‐learning interatomic potentials, large language models, and autonomous experiments. This perspective highlights how AI can accelerate the identification of solid electrolytes with fast ion transport, stable interfaces,
Eric Jianfeng Cheng   +24 more
wiley   +1 more source

Synthesis of Ti2B2Clx MBenes in Molten Salts From Theoretical and Experimental Perspectives

open access: yesAdvanced Materials, EarlyView.
By integrating a theoretical framework with experiments, Ti2InB2 was selectively etched with ZnCl2 to produce a multilayer (ml) Ti2B2Clx MBene. The In atoms are completely removed, with simultaneous incorporation of chlorine surface terminations. in situ x‐ray diffraction indicates a direct biphasic transformation from Ti2InB2 to ml‐MBene, with no ...
Rodrigo M. Ronchi   +15 more
wiley   +1 more source

Effect of the supply voltage fluctuations on the efficiency of the technique of shaping the current spectrum generated by VSI traction drive

open access: yesMATEC Web of Conferences, 2018
The issue of interfering influence of traction vehicles on railway traffic control systems is a serious problem posing a threat to railway traffic safety.
Steczek Marcin
doaj   +1 more source

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