Results 141 to 150 of about 66,529 (315)

Recent advancement of AC–DC SEPIC converter: A state–of–the–art review on topologies, technical aspects and applications

Results in Engineering
Power Factor Correction (PFC) ac–dc converters play a vital role in numerous power electronics applications as they can enhance power quality and achieve high levels of efficiency.
Istiak Ahmed, Md. Ashaduzzaman Niloy, Marjan Al Haque, Showrov Rahman, Ferdous S. Azad, M.S. Hossain Lipu, Amanullah Maung Than Oo, Md. Abdur Razzak   +7 more
doaj   +1 more source

Voltage source ac-to-dc converters for high-power transmitters [PDF]

This work was done to optimize the design of the components used for the beam power supply, which is a component of the transmitters in the Deep Space Network (DSN).
Cormier, R.
core   +1 more source

Research Progress and Applications of Non‐Carrier‐Injection Electroluminescence

Advanced Electronic Materials, EarlyView.
Non‐carrier‐injection electroluminescence (NCI‐EL) uses AC fields and displacement currents to trigger light from internal charge reservoirs, enabling minimalist emitters with remotely coupled terminals. This review maps shared mechanisms across organics, GaN, quantum dots, and TMDCs, compares planar, interdigital, single‐terminal, and coaxial designs,
Wei Huang, Jianbi Le, Rong Chen, Zhixian Lin, Xiongtu Zhou, Yongai Zhang, Chaoxing Wu   +6 more
wiley   +1 more source

ELECTROMAGNETIC COMPATIBILITY OF A DC POWER DISTRIBUTION SYSTEM FOR THE ATLAS LIQUID ARGON CALORIMETER COMPATIBILIDAD ELECTROMAGNÉTICA EN EL SISTEMA DE DISTRIBUCIÓN DE CORRIENTE CONTINUA PARA EL CALORÍMETRO DE ARGÓN LÍQUIDO EN ATLAS

Ingeniare: Revista Chilena de Ingeniería, 2008
The front-end electronics of the ATLAS Liquid Argon Calorimeter is powered by DC/DC converters nearby the front-end crates. They are fed by AC/DC converters located in a remote control room through long power cables.
George Blanchot, Luis Hervas, Jim Kierstead, Francesco Lanni, Sergio Rescia, Mauricio Verdugo, Jorge Pontt, Ricardo Olivares, Hernán Robles, Sergio Díaz   +9 more
doaj  

Acoustic Impedance‐Tailored High‐Performance Ultrasound‐Driven Triboelectric Nanogenerators

Advanced Energy Materials, EarlyView.
An acoustic impedance–mismatched triboelectric nanogenerator is presented for efficient ultrasound energy harvesting in implantable medical devices. Concave and convex membrane patterning induces controlled acoustic impedance mismatch, which boosts output by ∼200% and ensures stable operation over 100 million cycles and six weeks in vivo, highlighting ...
Young‐Jun Kim, Youngwook Chung, Joon‐Ha Hwang, Jang‐Mook Jeong, Bosung Kim, Donghyun Kang, Byung‐Ok Choi, Hong‐Joon Yoon, Sang‐Woo Kim   +8 more
wiley   +1 more source

Research on control strategy for neutral-point balance in three-level configurations for railway energy dispatching equipment

机车电传动
Energy dispatching equipment (EDE) utilizes converters in an AC-DC-AC topology to perform energy management functions including negative sequence, harmonic suppression, reactive power compensation, and active energy dispatching transfer for railway ...
CHEN Xin, WANG Yue, FU Gang, QIU Lebing, LIU Xiang, XIANG Jinwen   +5 more
doaj  

A Leaf‐Inspired Janus‐Structured Triboelectric‐Moisture Hybrid Energy Harvester

Advanced Energy Materials, EarlyView.
This study proposes a bioinspired Janus structured energy‐leaf with hybrid triboelectric‐moisture hybrid energy harvesters. This hybrid energy harvester is demonstrated in an intelligent emergency system for effective distress signaling and evacuation guiding during potential crises.
Liang Wei, Rui Gu, Yixuan Fu, Ziwei Huo, Chao Liu, Jiahong Yang, Siqi Sun, Yang Liu, Qijun Sun, Dong‐Hwan Kim, Zhong Lin Wang   +10 more
wiley   +1 more source

FastCat: Autonomous Discovery of Multielement Layered Double Hydroxide Alloy Catalysts for Alkaline Oxygen Evolution Reaction

Advanced Intelligent Discovery, EarlyView.
A machine learning‐guided self‐driving laboratory screened over 500 nickel‐based layered double‐hydroxide catalysts for alkaline oxygen evolution. Out of the eight metals, the robot uncovered a quaternary Ni–Fe–Cr–Co catalysts requiring only 231 mV overpotential to reach 20 mA cm−2.
Nis Fisker‐Bødker, Enzo Raffaele Moretti, Jin Hyun Chang, Tejs Vegge   +3 more
wiley   +1 more source

Grid-Forming Controller for Multi DC/AC Converter Topology Supplying 25 kVAC Single-Phase Railway Catenary From 3 kVDC

IEEE Open Journal of the Industrial Electronics Society
One of the primary challenges associated with single-phase AC railway electrification is the unbalance created within the three-phase supply grid. This problem does not arise in DC electrification systems.
Roberto Martin Lopez, Sergio de Lopez Diz, Alessandro Faro, Emilio Jose Bueno Pena, Alessandro Lidozzi   +4 more
doaj   +1 more source

Toward Capacitive In‐Memory‐Computing: A Device to Systems Level Perspective on the Future of Artificial Intelligence Hardware

Advanced Intelligent Discovery, EarlyView.
Capacitive, charge‐domain compute‐in‐memory (CIM) stores weights as capacitance,eliminating DC sneak paths and IR‐drop, yielding near‐zero standbypower. In this perspective, we present a device to systems level performance analysis of most promising architectures and predict apathway for upscaling capacitive CIM for sustainable edge computing ...
Kapil Bhardwaj, Ella Paasio, Sayani Majumdar   +2 more
wiley   +1 more source