Results 81 to 90 of about 7,207,987 (296)

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

Advanced 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, Iason Konstantinos‐Douveas, Claas Abert, Elina Zhakina, Sandra Ruiz‐Gómez, Claudia Fernández‐González, Luke Alexander Turnbull, Sebastian Wintz, Markus König, Simone Finizio, Markus Weigand, Naëmi Leo, Dieter Suess, Aurelio Hierro‐Rodríguez, Amalio Fernández‐Pacheco, Claire Donnelly   +15 more
wiley   +1 more source

Design, analysis and implementation of real-time harmonics elimination: A generalised approach

, 2014
© The Institution of Engineering and Technology 2014. It is not a secret that the problem of harmonics and switching frequency can have a dreadful impact on switching power converters.
Nibouche, Mokhtar, Bouchhida, Ouahid, Makhlouf, Badr   +2 more
core   +1 more source

Giant Orbital Rashba–Edelstein Effect in Crystalline Cu2O/Cu Heterostructures

Advanced Materials, EarlyView.
An enhanced orbital Rashba–Edelstein effect is demonstrated in a crystalline Cu2O/Cu heterostructure, compared to naturally oxidized CuOx structures, highlighting the critical role of crystallinity and interface control in orbital torque generation. The resulting spin torque conductivity exceeds that of Pt, indicating the potential of orbital torque ...
San Ko, Jaimin Kang, Su Jae Kim, Hanhwi Jang, Do‐Kyeong Nam, Minseok Kang, Sunghoon Kim, Yeon Sik Jung, Se‐Young Jeong, Kab‐Jin Kim, Byong‐Guk Park   +10 more
wiley   +1 more source

Optimal Zero Cross Current Distortions Suppression Method for Vienna Three-Phase Rectifier

IEEE Access
Vienna three phase rectifiers are widely used in many fields due to their high efficiency and performance. However, the Vienna topology results in significant distortions of the current at the zero-crossing point, thereby increasing the current harmonics.
Hongda Song, Li Liu, Xiaolei Che, Yimin Gong, Yang Yang, Jiannan Zhang   +5 more
doaj   +1 more source

Control of Inverter-Interfaced Distributed Generation Units for Voltage and Current Harmonics Compensation in Grid-Connected Microgrids [PDF]

Journal of Operation and Automation in Power Engineering, 2016
In this paper, a new approach is proposed for voltage and current harmonics compensation in grid-connected microgrids (MGs). If sensitive loads are connected to the point of common coupling (PCC), compensation is carried out in order to reduce PCC ...
Reza Ghanizadeh, Mahmoud Ebadian, Gevork B. Gharehpetian   +2 more
doaj  

Above Room Temperature Ferroelectricity in Epitaxially Strained KTaO3

Advanced Materials, EarlyView.
Through precise epitaxial engineering, the cubic and paraelectric KTaO3${\rm KTaO}_3$ is transformed into a robust ferroelectric. By leveraging lattice‐mismatched substrates to apply controlled epitaxial strain, a stable ferroelectric ground‐state is achieved with a transition temperature as high as 475 K, establishing KTaO3${\rm KTaO}_3$ as a highly ...
Tobias Schwaigert, Salva Salmani‐Rezaie, Sankalpa Hazra, Utkarsh Saha, Maya Ramesh, Aiden Ross, Betül Pamuk, Long‐Qing Chen, David A. Muller, Darrell G. Schlom, Venkatraman Gopalan, Kaveh Ahadi   +11 more
wiley   +1 more source

Implementation of a Current Harmonics Suppression Strategy for a Six-Phase Permanent Magnet Synchronous Motor

Energies
This paper proposes a current harmonic suppression strategy that combines harmonic synchronous rotating frame (HSRF) current feedback control and back-electromotive force harmonic (BEMFH) feedforward compensation to suppress the fifth and seventh current
Yu-Ting Lin, Jonq-Chin Hwang, Cheng-Ting Tsai, Cheng-Tsung Lin   +3 more
doaj   +1 more source

A statistic study of harmonics and interharmonics at a modern wind-turbine

, 2014
The work presents measurements of harmonics and interharmonics from a modern wind turbine over a period of several days, using a conventional power quality monitor.
Kai Yang, E.O. Anders Larsson, Mats Wahlberg, Math H. J. Bollen, Bollen, Math,, Larsson, Anders,, Wahlberg, Mats,, Yang, Kai,   +7 more
core   +1 more source

Noise‐Tunable Memristor Enabling Programmable Probabilistic Neurons for Frequency‐Selective Time‐Series Signal Encoding

Advanced Materials, EarlyView.
Memristors offer tunable resistance and intrinsic instability, making them promising tunable noise sources. We propose a spiking‐rate‐programmable probabilistic neuron using a Ru/TaOx/Pt memristor, where resistance‐dependent noise enables frequency‐selective encoding.
Do Hoon Kim, Seoeun Jang, Hakseung Rhee, Min Gu Lee, Daehee Kim, Taewook Go, Woon Hyung Cheong, Hanchan Song, Kyung Min Kim   +8 more
wiley   +1 more source

Decoupled Control of an Active Power Filter in a Vibrating Reference Frame

Power Electronics and Drives
Active power filter (APF) control is a natural area of application for vibrating reference frame (VRF) transformation due to the intentional occurrence of higher harmonics in the active filter current compensating load current harmonics.
Wodyk Sebastian, Iwański Grzegorz
doaj   +1 more source