Results 151 to 160 of about 6,734,093 (295)

High-power hybrid commutated converter for carbon-neutral power transmission. [PDF]

Nat Commun
Xu C, Wang Z, Yu Z, Dong Y, Wu J, Zhao B, Qu L, Zeng R.   +7 more
europepmc   +1 more source

System for AC/DC Conversion with Boost Converter and Power Factor Correction Control

Power systems for AC/DC conversion are widely used in industry to convert AC power from the grid into DC power for various loads. This paper presents a system that includes a double-wave half-wave rectifier, a boost converter, and two control strategies: one operating in an open-loop configuration and the other in a closed-loop configuration.
openaire   +1 more source

Deciphering Structure‐Bubble‐Mass Transfer Relationships in Water Electrolysis Through Electrode Morphology Regulation

Advanced Science, EarlyView.
Electrode morphology is shown to govern oxygen‐bubble dynamics and interfacial mass transfer during water electrolysis. Positive‐curvature nanoneedles promote rapid release of small bubbles, sustain electrolyte renewal, and minimize mass‐transport losses, whereas flat and concave architectures increasingly retain bubbles.
Zhiqing Tang, Ziyun Zhang, Huicun Gu, Baoxin Wu, Kejun Yan, Jiahui Luo, Yuting Jiang, Cailin Xiao, Yu Xu, Lin Zeng   +9 more
wiley   +1 more source

High‐Current‐Density Acidic CO2 Electroreduction to Formic Acid Enabled by Multiscale Microenvironment Regulation Over Defect‐Rich Sn/SnOx

Advanced Science, EarlyView.
Acidic CO2 electroreduction to formic acid is enabled by integrating mixed Sn/SnOx nanoclusters, K+‐regulated interfacial solvation, and Janus wettability. Coordinated control of active sites, interfacial water, and gas‐liquid transport suppresses hydrogen evolution and delivers approximately 85% HCOOH Faradaic efficiency at 400 mA cm−2.
Qiaoqi Guo, Bowen Jiang, Le Huang, Kunyu Jiang, Rongrong Tang, Qinong Zhu, Huajun Feng, Mengyang Fan, Yijing Xia   +8 more
wiley   +1 more source

Power management for triboelectric and electrostatic generators enabling continuous and stable power delivery. [PDF]

Nat Commun
Cao Z, Teng J, Zhao Y, Guo X, Xu J, Ren C, Ye X.   +6 more
europepmc   +1 more source

Self‐Sustaining Sensing Systems: Integration Strategies and Signal–Power Matching in Energy‐Harvesting Electronics

Advanced Science, EarlyView.
Energy‐harvesting‐integrated sensors couple ambient energy conversion with sensing, processing, and wireless communication. This review organizes recent progress through integration architectures and operating principles, revisiting co‐packaged, monolithic, and co‐functional designs together with always‐on, event‐driven, and multi‐modal sensing modes ...
Taehyun Park, Ki‐Yoon Park, Yeonho Choi, Dong‐Myeong Shin, Hong‐Joon Yoon, Hocheon Yoo   +5 more
wiley   +1 more source

A miniature piezoelectric-thermomagnetic generator for low-grade waste heat recovery. [PDF]

Sci Rep
Wischnewski M, Joseph J, Ohtsuka M, Miki H, Kohl M.   +4 more
europepmc   +1 more source

High‐Temperature Magnetic Field Mapping Using a Single‐Crystal Diamond MEMS Resonator Array

Advanced Science, EarlyView.
A single‐crystal diamond MEMS resonator array enables magnetic‐field reconstruction with millisecond response, nanotesla level magnetic noise, and stable operation up to 573 K. Two‐ and three‐dimensional magnetic field mapping are demonstrated using ΔEeffect sensing, highlighting the potential of diamond MEMS technology for hightemperature magnetic ...
Zilong Zhang, Keyun Gu, Satoshi Koizumi, Masaya Toda, Meiyong Liao   +4 more
wiley   +1 more source

Harnessing in-situ tribo-plasma emission for energy harvesting. [PDF]

Sci Adv
Zeng Q, Tan L, Xu F, Wang T, Chen A, Wang X.   +5 more
europepmc   +1 more source

Research on DC-modulated AC/AC converters

, 2011
AC/ AC conversion technology is one of the most important research areas of Power Electronics and has been widely used in various industrial applications including light dimmer.
Tang, Difei.
core