Results 51 to 60 of about 1,621,551 (293)

Structure‐Guided Dynamical Mechanics in Bioinspired Double Twisted Laminated Thin Films

Advanced Functional Materials, EarlyView.
This work explores a dynamic mechanistic study of crack propagation and puncture testing via real‐time monitoring of crack initiation, propagation, and termination through nature‐inspired single and double twisted architectures fabricated from cellulose nanocrystals.
Justin Brackenridge, Olivia Harper, Jaejun Lee, Sergio Gonzalez‐Munoz, Vladimir V. Tsukruk   +4 more
wiley   +1 more source

An extendable switched‐capacitor based three‐phase multilevel inverter with boosting capability

IET Power Electronics
The increasing demand for integrating renewable energy sources necessitates inverter topologies with boosting capabilities. Using inverters with boosting capability and a low number of components to integrate renewable energy sources can reduce costs ...
Hadi Aghaei, Seyed Majid Hashemzadeh, Ebrahim Babaei, Mohammad Bagher Bannae Sharifian, Atif Iqbal   +4 more
doaj   +1 more source

A Fast, Decentralized, Self-Aligned Carrier Method for Multicellular Converters

Applied Sciences, 2020
This paper proposes a fast, decentralized method for self-aligning the carriers of a multiphase/multilevel converter operating on the basis of phase-shifted pulse width modulation or level-shifted pulse width modulation. In the proposed method, each cell
Quoc Dung Phan, Guillaume Gateau, Phu Cong Nguyen, Marc Cousineau, Huu Phuc To, Bao Anh Nguyen, Lucas Veit, Romain De Milly, M.Mannes Hillesheim   +8 more
doaj   +1 more source

Giant Magnetic Coercivity Driven by Spin‐Bag Ferromagnetism in Epitaxial Sr3YCo4O10+δ Films with Engineered 2D Oxygen Vacancy Ordering

Advanced Functional Materials, EarlyView.
A giant magnetic coercivity and a vertical shift of hysteresis loops are demonstrated in Sr3YCo4O10+δ epitaxial films. The hard magnetic behavior originates from ferromagnetic spin bags stabilized within a long‐range ordered oxygen‐vacancy structure.
Yanbin Chen, Roger Guzman, Xiaomin Jia, Jialu Wu, Xing Xu, Li Sun, Jinbo Pan, Shixuan Du, Myung‐Hwan Whangbo, Wu Zhou, Jing Ma, Ce‐wen Nan, Chonglin Chen   +12 more
wiley   +1 more source

Sector Subdivision Based SVPWM Strategy of Neutral-Point-Clamped Three-Level Inverter for Current Ripple Reduction

Energies, 2019
This paper presents a sector subdivision based space vector pulse width modulation (SVPWM) strategy with reduced current ripple for a three-level inverter.
Guozheng Zhang, Bingxu Wei, Xin Gu, Xinmin Li, Zhanqing Zhou, Wei Chen   +5 more
doaj   +1 more source

Research on voltage regulation ability of four‐level nested clamp converter based on virtual space vector modulation

IET Power Electronics, 2023
The four‐level nested neutral point clamped (4L‐NNPC) converter is a new multi‐level converter with a simple topology, which is suitable for the medium‐voltage application. But it has voltage balancing problems under the low output frequency condition. A
Liangdeng Hu, Fei Xiao, Ziyue Xin
doaj   +1 more source

Improvement of Pulse-Width Modulation Algorithm for Thermal Plant Control

, 2017
The results of the pulse-width modulation algorithms analysis are presented in the paper. The following two algorithms are analyzed: pulse-width modulator (PWM) based on the sawtooth waveform generator and PWM based on an integrator and a switch element.
Sviatoslav Klos, Sergiy Kril, Volodymyr Savytskyi, Roman Fedoryshyn   +3 more
core   +1 more source

Implantable Ionic Memristors Based on Natural Polymer Heterojunctions

Advanced Functional Materials, EarlyView.
We report an implantable natural polymer‐based ionic memristor composed of hyaluronic acid, chitosan, and PDMS. The device achieved 98.94% accuracy in MNIST classification while reducing training time by 36.8% compared with a conventional artificial neural network (ANN).
Dong‐yup Lee, Byung Ik Park, Gihyeon Yim, Hyunjae Yoo, Sangjun Ma, Jundong Park, Jeong‐Yun Sun   +6 more
wiley   +1 more source

Study on Electrical Machine Phase Current Reconstruction Based on a DC-Bus Current Sensor

CES Transactions on Electrical Machines and Systems
In the field of high-performance motor control, accurate sampling of motor currents is essential for precise control and stability. To achieve reliable measurement of a motor's three-phase currents, it is typically necessary to install at least two high ...
Yu-Chao Fang, Yun-Chong Wang, Zhang-Hao Huang, Yue-Sheng Qi, Jian-Xin Shen   +4 more
doaj   +1 more source

Optical Multilevel Pulse Width Modulation for Analog Mobile Fronthaul

Photonics, 2018
The evolution of radio access networks is towards a centralized architecture (C-RAN), with massive antenna deployments and large radio-frequency bandwidths.
Lorenzo Combi, Alberto Gatto, Pierpaolo Boffi, Umberto Spagnolini, Paola Parolari   +4 more
doaj   +1 more source