Results 71 to 80 of about 1,336,559 (340)

Enhancing the monitoring capability of acoustic measurement points: An optimization method for the layout of acoustic measurement points for low‐frequency transformers

IET Science, Measurement & Technology
The acoustic signals in the operation of low‐frequency transformer have the state information of the body, which can be monitored online by arranging acoustic measuring points.
Tao Zhao, Shijie Zhang, Jiajun Yang, Haofan Lin, Bowen Wang, Zhi Yang   +5 more
doaj   +1 more source

A Study on the Integration of a High-Speed Flywheel as an Energy Storage Device in Hybrid Vehicles [PDF]

, 2010
The last couple of decades have seen the rise of the hybrid electric vehicle as a compromise between the outstanding specific energy of petrol fuels and its low-cost technology, and the zero tail-gate emissions of the electric vehicle.
Martinez-Gonzalez, Pablo, Martinez-Gonzalez, Pablo   +1 more
core   +1 more source

Enhancing Low‐Temperature Performance of Sodium‐Ion Batteries via Anion‐Solvent Interactions

Advanced Functional Materials, EarlyView.
DOL is introduced into electrolytes as a co‐solvent, increasing slat solubility, ion conductivity, and the de‐solvent process, and forming an anion‐rich solvent shell due to its high interaction with anion. With the above virtues, the batteries using this electrolyte exhibit excellent cycling stability at low temperatures. Abstract Sodium‐ion batteries
Cheng Zheng, Qian Yao, Yanan Sun, Hongyu Lv, Zhongchao Bai, Guoliang Zhang, Nana Wang, Jian Yang   +7 more
wiley   +1 more source

MnI‐Functionalized Covalent Organic Framework as Efficient Electrocatalyst for CO2 Reduction in a Catholyte‐Free Zero‐Gap Electrolyzer

Advanced Functional Materials, EarlyView.
This work demonstrates the successful integration of a phenanthroline‐based 2D COF with MnI catalytic sites into a catholyte‐free membrane‐electrode‐assembly cell for CO2 electroreduction. The crystalline COF actively suppresses Mn⁰–Mn⁰ dimerization, achieving a turnover frequency of 617 h⁻¹ at 2.8 V (full‐cell potential), and enabling stable operation.
Laura Spies, Marcos Eduardo G. Carmo, Gonçalves J. Marrenjo, Stephan Reuther, Patrick Ganswindt, Antonio Otavio T. Patrocinio, Thomas Bein, Osmando F. Lopes, Jenny Schneider   +8 more
wiley   +1 more source

Influence characteristics of water penetration on fibre‐reinforced polymer/rigid polyurethane foam interface of the composite cross‐arm considering natural ageing

High Voltage
Fibre‐reinforced polymer (FRP)/rigid polyurethane foam (RPUF) interface is susceptible to moisture intrusion in addition to natural ageing during operation.
Jun Xie, Zhe Zhou, Ziqian Liu, Haonan Tian, Sigang Zhang, Qing Xie   +5 more
doaj   +1 more source

Modelling of reduced GB transmission system in PSCAD/EMTDC [PDF]

, 2014
Energy and environmental issues are two of the greatest challenges facing the world today. In response to energy needs and environmental concerns, renewable energy technologies are now considered the future technologies of choice.
Kerahroudi, SK, Mohammadi, M, Rabbani, R, Taylor, GA, Zobaa, AF   +4 more
core   +1 more source

All‐in‐One Analog AI Hardware: On‐Chip Training and Inference with Conductive‐Metal‐Oxide/HfOx ReRAM Devices

Advanced Functional Materials, EarlyView.
An all‐in‐one analog AI accelerator is presented, enabling on‐chip training, weight retention, and long‐term inference acceleration. It leverages a BEOL‐integrated CMO/HfOx ReRAM array with low‐voltage operation (<1.5 V), multi‐bit capability over 32 states, low programming noise (10 nS), and near‐ideal weight transfer.
Donato Francesco Falcone, Victoria Clerico, Wooseok Choi, Tommaso Stecconi, Folkert Horst, Laura Bégon‐Lours, Matteo Galetta, Antonio La Porta, Nikhil Garg, Fabien Alibart, Bert Jan Offrein, Valeria Bragaglia   +11 more
wiley   +1 more source

Study on the dynamic mechanical properties of winding‐block axial structure considering short circuit strain rate effect

High Voltage
Transformers may suffer multiple short‐circuit impacts during long‐term operation, and axial instability is one of the typical types of serious accidents caused by short‐circuit faults.
Xinyu Wang, Ping Wang, Jianghai Geng, Zikang Zhang, Fangcheng Lü, Shuguo Gao   +5 more
doaj   +1 more source

Demonstration of an All‐Optical AND Gate Mediated by Photochromic Molecules

Advanced Functional Materials, EarlyView.
A logic AND gate that runs on photons is demonstrated. It relies on two spatially separated photochromic molecules that work in tandem. Abstract The realization of a photonic logic AND gate, i.e. a logic AND gate that runs on photons rather than electrons, and where all steps are controlled by light, is demonstrated. In a proof‐of‐principle experiment,
Heyou Zhang, Max Gießübel, Pankaj Dharpure, Andrea Albert, Vira Niestierkina, Paul Mulvaney, Mukundan Thelakkat, Jürgen Köhler   +7 more
wiley   +1 more source

Development of 3 kV low‐frequency induction voltage divider using two‐stage excitation

High Voltage
To address the lack of voltage ratio standards for accuracy testing of low‐frequency voltage transformers, it is necessary to develop a 3 kV low‐frequency induction voltage divider.
Xuan Li, Jiang Guo, Jiangang Bi, Hui Li
doaj   +1 more source