Results 91 to 100 of about 31,488 (302)

Peak-Zero-DPWM for Improving Performance of Single-Phase Five-Level T-Type NPC Inverter

IEEE Access
The discontinuous pulse width modulation (DPWM) improves the efficiency and reliability of power devices by reducing the switching losses. However, it aggravates the Total Harmonic Distortion (THD) of outputs and the reliability of DC-link capacitors ...
Taerim Ryu, Ui-Min Choi
doaj   +1 more source

Liquid Phase Transmission Electron Microscopy: A Window into the Early Stages of Complex Material Formation

Advanced Functional Materials, EarlyView.
Liquid‐phase transmission electron microscopy enables direct observation of nucleation and growth processes in solution. This review is dedicated to the remembrance of Helmut Cölfen and highlights recent studies on complex materials—oxides, biominerals, organic–inorganic crystals—which were central to his research activity. It summarizes key milestones,
Charles Sidhoum, Vinavadini Ramnarain, Nathaly Ortiz Peña, Dris Ihiawakrim, Clément Sanchez, Ovidiu Ersen   +5 more
wiley   +1 more source

EMI Reduction in Grid-Connected Converters Using the Nonlinear Behavior of Multi-Layer Ceramic Capacitors

IEEE Open Journal of Power Electronics
In soft switching power converters, placing a capacitor parallel to the switching semiconductor power devices is a means to reduce electromagnetic interference. This paper investigates the application of multi-layer ceramic capacitors, MLCCs, as parallel
Yusuf Kosesoy, Henk Huisman, Jan M. Schellekens   +2 more
doaj   +1 more source

Enhanced Terahertz Thermoelectricity Via Engineered Van Hove Singularities and Nernst Effect in Moiré Superlattices

Advanced Functional Materials, EarlyView.
Moiré band engineering in graphene/hexagonal boron nitride–based superlattices unlocks van Hove singularities (VHSs) for terahertz (THz) optoelectronics. Tuning the Fermi level near these singularities, associated with secondary neutrality points (SNPs), enhances the photothermoelectric response.
Leonid Elesin, Arthur L. Shilov, Subhajit Jana, Ilya Mazurenko, Pierre A. Pantaleon, Mikhail Kashchenko, Nikita Krivovichev, Viacheslav Dremov, Igor Gayduchenko, Takashi Taniguchi, Kenji Watanabe, Yibo Wang, Kostya S. Novoselov, Dmitry A. Svintsov, Grigory Goltsman, Elena I. Titova, Denis A. Bandurin   +16 more
wiley   +1 more source

Development of Discrete Power Supply with Charge Pump Method for High Powered Sonar System

Journal of Mechatronics, Electrical Power, and Vehicular Technology, 2012
Power supply is one of the electronic devices that can provide electric energy for electronic systems or other systems. There are several types of power supplies that can be applied depend on the requirement and functions. One example is the use of power
Kristian Ismail, Syamsu Ismail
doaj   +1 more source

Super-capacitor/lead acid battery hybrid energy storage suitable for remote area power supply (raps) systems.

, 2010
This paper presents the results of simulations based on real load data collected from a RAPS system in the south west of Western Australia. The load data was collected at a rate of one sample per second to capture the transient changes.
Blechynden, Bruce
core  

Mechanical Behavior and Fracture Mechanisms of MXene/PVDF Nanocomponsites: In Situ Characterization and Multiscale Analysis

Advanced Functional Materials, EarlyView.
Multiscale experiments and modeling reveal how Ti3C2Tx MXene nanosheets reinforce PVDF nanocomposites. An optimal MXene loading (∼1 wt.%) nearly doubles tensile strength through efficient stress transfer, flake alignment, and crack‐deflection mechanisms, transforming ductile polymer behavior into a controlled multi‐stage fracture pathway which aligns ...
Bita Soltan Mohammadlou, James FitzPatrick, Li Meng, Kateryna Shevchuk, Ahmad Najafi, Yury Gogotsi   +5 more
wiley   +1 more source

High-Power Density Capacitive Coupler for Power Transfer System in Miniaturized Rotary Application

CSEE Journal of Power and Energy Systems
To realize a high-power density capacitive coupler for miniaturized rotary application, a parameter design method is proposed in this article. Since a capacitive coupler is composed of metal plates and external capacitors, limitations include two parts ...
Yu Wu, Qianhong Chen, Jinan Yin, Xiaoyong Ren, Zhiliang Zhang   +4 more
doaj   +1 more source

Proposed shunt rounding technique for large-scale security constrained loss minimization

, 2010
The official published version can be obtained from the link below - Copyright @ 2010 IEEE.Optimal reactive power flow applications often model large numbers of discrete shunt devices as continuous variables, which are rounded to their nearest discrete ...
Irving, MR, Taylor, GA, MacFie, PJ, Hurlock, P, Wan, H   +4 more
core   +1 more source

Microenvironmental Reprogramming by 3D Anisotropic Cardiac Extracellular Matrix Induces Nuclear Remodeling and Epigenetic Maturation of Chemically Induced Cardiomyocytes

Advanced Functional Materials, EarlyView.
A 3D anisotropic hydrogel derived from heart extracellular matrix guides cytoskeletal alignment and nuclear remodeling in reprogrammed cardiomyocyte‐like cells. This study reveals how matrix alignment modulates nuclear envelope dynamics and chromatin state, triggering transcriptional and functional maturation.
Seung Ju Seo, Mi Jeong Lee, Hyun Wook Kang, Seonhee Byeon, Soo‐Kyoung Choi, Nakwon Choi, Seung‐Woo Cho, Yoonhee Jin   +7 more
wiley   +1 more source