Results 51 to 60 of about 66,529 (315)

Stability boundary analysis in single-phase grid-connected inverters with PLL by LTP theory [PDF]

, 2017
Stability analysis of power converters in AC net¬works is complex due to the non-linear nature of the conversion systems. Whereas interactions of converters in DC networks can be studied by linearising about the operating point, the extension of the same
Costabeber, Alessando, Cox, Stephen M., Formentini, Andrea, Salis, Valerio, Zanchetta, Pericle   +4 more
core   +2 more sources

Single‐ and Dual‐Atom Configurations in Atomically Dispersed Catalysts for Lithium–Sulfur Batteries

Advanced Functional Materials, EarlyView.
Single‐atom and dual‐atom‐based atomically dispersed catalysts (ADCs) effectively address the shuttle effect and sluggish redox kinetics in Li–S batteries. With nearly 100% atomic utilization and tunable coordination environments, ADCs enhance LiPSs adsorption, lower conversion barriers, and accelerate sulfur redox reactions.
Haoyang Xu, Zhenfeng Li, Yue Fei, Ali Mohammadi, Ge Li   +4 more
wiley   +1 more source

Design of an inductor-less step-up ac/dc converter for 0.3 V@1 MHz vibration energy harvesting

Energy Reports, 2020
For vibration energy harvesting, we propose an inductor-less step-up ac/dc converter in this paper. To realize the inductor-less design, the proposed ac/dc converter consists of two converter blocks: Cockcroft–Walton circuit and charge pump.
Kei Eguchi, Akira Shibata, Kyoka Kuwahara, Takaaki Ishibashi   +3 more
doaj   +1 more source

Tissue‐Stimulator Platform for Electrically Stimulating Pancreatic β‐Cells for Long‐Term Functional Regulation

Advanced Functional Materials, EarlyView.
We present a tissue‐stimulator platform for seamless electrode integration with pancreatic tissue, applying uniform electrical stimulation through optimized design with biohybrid 3D printing. Advantageous effects of electrical stimulation on β‐cell function were observed, including enhanced calcium signaling, islet morphology, and maturation.
Jihwan Kim, Uijung Yong, Myungji Kim, Jaewook Kim, Yeonggwon Jo, In Kyong Shim, Song Cheol Kim, Jinah Jang   +7 more
wiley   +1 more source

Incremental SVM of controlled full-bridge rectifiers to allow IEC 61000-3-2 enforcement in power grid connection of modern elevator systems [PDF]

, 2002
The purpose of this paper is the study of different power converters and control techniques to allow power grid connection of modern vertical operation systems, verifying IEC 61000-3-2. We focus on the harmonic current analysis produced by the industrial
Barranco, M., Barrero, Federico, García Franquelo, Leopoldo, Perales Esteve, Manuel Ángel, Sánchez Segura, Juan Antonio, Terrón, L., Torre, A. de la   +6 more
core   +1 more source

Dual‐Programmable Architected Magnetic Soft Materials: Tuning Mechano–Electric Responses by Inverse Design

Advanced Functional Materials, EarlyView.
ABSTRACT Materials that can deform, sense, and autonomously generate power in response to wireless magnetic fields, through both magnetic‐actuated shape transformation and charge generation, are an emerging focus in advanced functional materials research.
Zhi Zhao, Xiaojia Shelly Zhang
wiley   +1 more source

Centralized DC voltage control for a Multiport converter in distribution grids

International Journal of Electrical Power & Energy Systems
Power electronics components are becoming essential for smart grids, especially integrating systems such as renewable energies, storage or electric vehicles.
Martí Domínguez-Hernàndez, Marc Cheah-Mañé, Robert Griñó, Oriol Gomis-Bellmunt   +3 more
doaj   +1 more source

Residual‐Lithium‐to‐LiF Conversion Enables a LiF–Fluorinated Carbon Interphase for Reconstruction‐Resistant Ni‐Rich Cathodes

Advanced Functional Materials, EarlyView.
A fluorine‐rich acrylate monomer (PFHEA) was solvent‐free applied to NCM90 and thermally decomposed under Ar to convert residual lithium into LiF and form a pre‐built LiF/fluorinated amorphous carbon (LiF/FC) interphase. The LiF/FC layer suppresses NiO rock‐salt reconstruction and microcrack propagation, lowers interfacial resistance, and improves Li ...
Pangyu Kim, Juyeon Han, Junhyeok Kim, Younghoon Kim, Eunha Seo, Dain Kim, Jeeyoung Yoo   +6 more
wiley   +1 more source

Current stress and switching loss evaluation of a unified expandable power converter used for grid‐integration of renewable energy sources

IET Renewable Power Generation, 2021
Due to the intermittent nature of the renewable energy systems (RESs), more specifically, solar panels and wind turbines, their sole use does not lead to a smooth and reliable power. To overcome this issue, the concurrent grid‐integration of RESs to form
Hamed Bizhani, S. M. Muyeen, Fatemeh R. Tatari, Kuaanan Techato, Lazhar Ben‐Brahim, Frede Blaabjerg   +5 more
doaj   +1 more source

Behavior of Residual Current Devices at Earth Fault Currents with DC Component

Sensors, 2022
Low-voltage electrical installations are increasingly saturated with power electronic converters. Due to very high popularity of photovoltaic (PV) installations and the spread of electric vehicles (EV) as well as their charging installations, DC–AC and ...
Stanislaw Czapp, Hanan Tariq, Slawomir Cieslik   +2 more
doaj   +1 more source