Results 61 to 70 of about 29,460 (265)

Design and Application of Drive and Protection Circuit of 6 500 V IGBT Based on 1SC0450V

机车电传动, 2017
The drive characteristics of 1SC0450V was introduced in detail, and the implementation principle of drive supply circuit, supply under-voltage protection, advanced active clamp and short-circuit protection were analyzed. 6 500 V IGBT drive and protection
WANG Lei, YANG Lu, LI Shourong, GAO Sheng   +3 more
doaj  

Ferroelectric Polarization Enabled Threshold Voltage Modulation in High Electron Mobility Transistor

Advanced Functional Materials, EarlyView.
A comprehensive model is developed to capture the coupled electrostatics of a ferroelectric capacitor and a metal‐insulator‐semiconductor high electron mobility transistor (MISHEMT) connected in ferroelectric‐metal high electron mobility transistor (FeMHEMT) configuration.
Wentian Gao, Andre Wachowiak, Thomas Mikolajick, Uwe Schroeder, Roberto Guido   +4 more
wiley   +1 more source

Fault location scheme of HVDC converter based on fault loop analysis

International Journal of Electrical Power & Energy Systems
In order to solve the problem that multiple faults in the converter area will trigger the valve short-circuit protection action, and the fault location cannot be directly located according to the protection action result, a novel converter fault location
Dalin Mu, Guo Lei, Tingwei Xu, Haiqiang Zhang, Xiaopeng Li, Sheng Lin   +5 more
doaj   +1 more source

Atomically Dispersed Ni Site Catalysts Accelerating Sluggish Sulfur Redox Kinetics in Nonaqueous Zn‐S Batteries

Advanced Functional Materials, EarlyView.
An atomically dispersed Ni catalyst featuring Ni‐N4 coordination is developed as a sulfur host for nonaqueous Zn─S batteries. This configuration modulates the electronic structure to lower activation barriers during rate‐limiting steps and promotes a robust ZnF2‐rich cathode‐electrolyte interphase, thereby accelerating sulfur redox kinetics ...
Junhyuk Ji, Dongwoo Kim, Nuri Moon, Daehwan Kim, Keon Kim, Nahyung Kim, Young Yong Kim, Won Bae Kim   +7 more
wiley   +1 more source

Application of Under-Impedance Criterion to Protect against Effects of Phase-to-Phase Short Circuits in Medium-Voltage Networks

Energies
Common overcurrent criteria used to detect phase-to-phase short circuits in medium-voltage (MV) networks in some cases do not bring the expected results.
Beata Zięba, Bartosz Olejnik, Iwona Grobelna   +2 more
doaj   +1 more source

Charge‐Tunable Coacervate Micelles for Separator Engineering in Lithium‐Sulfur Batteries

Advanced Functional Materials, EarlyView.
A separator engineering strategy based on charge‐tunable complex coacervate core micelles (C3Ms) is presented to form an ion‐selective layer regulating polysulfide transport in Li–S batteries. The micelles enable uniform adsorption onto commercial polypropylene separators and infiltration throughout the internal pore network, suppressing polysulfide ...
Yongsheng Zhang, J. R. Andrade Aguirre, Julien Es Sayed, Chongyang Jiang, Yuxuan Zhang, Xiaolong He, Yinyu Xiang, Yutao Pei, Xiangping Zhang, Petra Ruldolf, Marleen Kamperman, Giuseppe Portale   +11 more
wiley   +1 more source

Dynamically Actuated Reconfigurable Topographical Surface Enables Active Control of Implant‐Associated Infections

Advanced Functional Materials, EarlyView.
A dynamically actuated reconfigurable topographical surface (DARTS) integrates contact‐mediated bactericidal nanotopography with programmable mechanical actuation to actively disrupt bacterial biofilms. Dynamic surface reconfiguration enhances bacterial killing and suppresses implant‐associated infections in vivo, providing a new strategy for active ...
Mohammad Asadi Tokmedash, Jihun Lee, J. Scott VanEpps, Sungmin Nam, Jouha Min   +4 more
wiley   +1 more source

Analysis and Research of High-power IGBT Short-circuit Energy

机车电传动, 2019
In view of the high-power IGBT short-circuit protection technology, the IGBT short-circuit reason and protective principle was introduced. The short circuit time of IGBT was verified to be closely related to its working voltage by short circuit test ...
Lu YANG, Lei WANG, Shourong LI
doaj  

Analysis of Characteristics Over Current Relay and Ground Fault Relay on Feeder Rayon Tabing

MATEC Web of Conferences, 2018
The reliability of power distribution of PT PLN (Persero) branch of Padang especially in Rayon Tabing most of the repeaters is still not optimal. This is due to an uncoordinated protection relay on each feeder.
Arzul, Darmana Ija, Erliwati, Salvayer Adiv Rama, Yetno Tris Safri   +4 more
doaj   +1 more source

Boosting Conversion Efficiency in Zn3P2/InP Solar Cells Via Nanoscale Junction Engineering

Advanced Functional Materials, EarlyView.
This study demonstrates the efficacy of selective area epitaxy (SAE) in enhancing the conversion efficiency of a Zn3P2${\rm Zn}_3{\rm P}_2$/InP heterojunction solar cell. The impact of the SAE pattern dimensions on the performance parameters is investigated. Small size opening limits Jsc because of current crowding whereas large size opening limits Voc
Raphael Lemerle, Valerio Piazza, Andrea Filippo, Melanie Micali, Luna Warzawa, Thomas Hagger, Kamil Wodzislawski, Julien Hurni, Valentin Biselli, Ioannis Kalogerakis, Konstantinos Rogdakis, George Viskadouros, Emmanuel Kymakis, Esther Alarcon‐Llado, Anna Fontcuberta i Morral   +14 more
wiley   +1 more source