Results 81 to 90 of about 3,183 (266)

Design Algorithm for and Validation of Winding Losses in Large-Capacity Medium-Frequency Distribution Transformers

Energies
Accurately calculating winding losses has always been a significant challenge in the design of large-capacity medium-frequency transformers. This paper presents an accurate design algorithm for calculating the winding losses of a large-capacity medium ...
Tao Jiang, Zhe Yang
doaj   +1 more source

Robust Electrocaloric Performance Enabled by Highly‐Polar Frustrated Nanodomains in NaNbO3‐Based Ferrodistortive Relaxor

Advanced Functional Materials, EarlyView.
P4bm framework in NaNbO3‐Ba(Ti, Hf)O3 ferrodistortive relaxor entails short‐range and highly‐polar ferrodistortive orders. The abundant highly‐polar orders facilitate to increase entropy change, and robust octahedral oxygen tilt enables to impede thermal perturbations.
Feng Li, Changshun Dai, He Qi, Jiecheng Liu, Xiaoming Shi, Heng Zhou, Qiong Yang, Mingsheng Long, Lei Shan, Chunchang Wang, Jianli Wang, Zhenxiang Cheng   +11 more
wiley   +1 more source

Topology and Control of Current-Fed Quadruple Active Bridge DC–DC Converters for Smart Transformers with Integrated Battery Energy Storage Systems

Energies
Smart transformers (STs), which are power electronic-based transformers with control and communication capabilities, facilitate managing future distribution grids with distributed generators (DGs) and battery energy storage systems (BESSs).
Kangan Wang, Zhaiyi Shen, Yixian Qu, Yayu Yang, Wei Tan   +4 more
doaj   +1 more source

Design and Optimization of Three-Phase Dual-Active-Bridge Converters for Electric Vehicle Charging Stations

Energies, 2019
In this paper, design and optimization method of a three-phase dual-active-bridge DC/DC converter is discussed. Three single phase transformers connected in star-star configuration were designed with large leakage inductance aiming to eliminate the need ...
Duy-Dinh Nguyen, Ngoc-Tam Bui, Kazuto Yukita   +2 more
doaj   +1 more source

Push-Pull DC-DC converter with planar transformer for PV applications

IECON 2013 - 39th Annual Conference of the IEEE Industrial Electronics Society, 2013
There is a trend toward increasing the performance of power electronics converters used in photovoltaic (PV) systems. This paper presents the design and implementation of a Push-Pull DC-DC converter prototype. This power converter typically integrates systems for photovoltaic applications due to high voltage conversion ratio.
Filipe Pereira, Abel Ferreira, Vitor Sobrado, António Martins 0001, Adriano Carvalho 0001   +4 more
openaire   +2 more sources

Spin Injection Of Exciton–Polaritons With Halide Perovskites At Room Temperature

Advanced Functional Materials, EarlyView.
A monolithic Tamm‐plasmon microcavity embedding a two‐dimensional halide perovskite enables room‐temperature spin injection of exciton‐polaritons under quasi‐resonant optical excitation. Polarization‐resolved spectroscopy reveals partial preservation of the injected spin in the lower polariton branch, while bare excitons remain fully depolarized.
Elena Sendarrubias Arias‐Camisón, Maksim Lednev, Jorge Cuadra, Raúl Gago, Luis Viña, Francisco José García Vidal, Johannes Feist, Ferry Prins, Carlos Antón Solanas   +8 more
wiley   +1 more source

Irradiation‐Induced Spin Bath Evolution and as‐Grown Hydrogen Defects in CVD Diamond Revealed by NV‐Based DEER Spectroscopy

Advanced Functional Materials, EarlyView.
Here, we provide the reader with the current state of the art in the fabrication of high‐T2‐coherence diamond, optimized through the use of double electron–electron resonance (DEER) spectroscopy. We reveal the main as well as yet unidentified spin defects, the reduction of which is essential for reducing the spin bath and fabricating materials for ...
Olga Rubinas, Jeroen Prooth, Michael Petrov, Remy Vandebosch, Emilie Bourgeois, David Chvátil, Milos Nesladek   +6 more
wiley   +1 more source

OPTIMIZATION OF HIGH FREQUENCY TRANSFORMERS FOR MODERN POWER SUPPLIES [PDF]

Fiabilitate şi Durabilitate
The study of high-frequency transformers is essential for several reasons, especially in the context of the rapid development of electronic and energy technology: 1.
Adina TĂTAR, Cristina IONICI
doaj  

Three‐Dimensional Anomalous Hall Sensing Enabled By Spin–Orbit Torque Driven Domain Reconfiguration In Chiral Multilayers

Advanced Functional Materials, EarlyView.
A three‐dimensional magnetic field sensor is realized in chiral W/CoFeB/MgO multilayers, where spin–orbit torques reversibly reconfigure homochiral stripe domains. The symmetry of the torque enables offset‐free in‐plane sensing, while the reproducible domain reconfiguration extends the linear out‐of‐plane range. An anomalous Hall readout delivers large‐
Sabri Koraltan, Rahul Gupta, Reshma Peremadathil Pradeep, Fabian Kammerbauer, Iryna Kononenko, Klemens Prügl, Michael Kirsch, Bernd Aichner, Santiago Helbig, Florian Bruckner, Claas Abert, Andrada Oana Mandru, Armin Satz, Gerhard Jakob, Hans Josef Hug, Mathias Kläui, Dieter Suess   +16 more
wiley   +1 more source

Research and design of transient test platform for DC current transformer

AIP Advances
This article studies the design and simulation of a transient test platform for DC current transformers to verify the effectiveness of the design scheme.
Ying Zhang, Xu Zhang
doaj   +1 more source