Results 41 to 50 of about 577 (206)

Research on Transient AC Overvoltage Suppression Strategy of Islanded Wind Power Transmission via VSC-HVDC

发电技术, 2022
Voltage source converter based high voltage direct current (VSC-HVDC) has a broad application prospect in the field of islanded renewable energy transmission, due to its advantages such as no commutation failure. When AC fault occurs in the AC power grid
YU Xiao, BU Guangquan, WANG Shanshan
doaj   +1 more source

Modelling and control of current full compensation system‐based controllable voltage source

IET Generation, Transmission & Distribution, 2023
Current active suppression technology of arc overvoltage in distribution network has small capacity of controllable voltage source and complex control and cannot flexibly adjust the zero‐sequence voltage of neutral point.
Hongwen Liu, Xiangjun Zeng, Qing yang, Chenchao Chai   +3 more
doaj   +1 more source

Research on the impact of grid-connected offshore wind farms on transient overvoltage and characteristics of harmonic resonances

Zhejiang dianli, 2023
Grid-connected offshore wind farms are likely to cause harmonic resonances in the power system that jeopardize the safe operation of the power grid. To this end， the impact of grid-connected offshore wind farms on the transient overvoltage and harmonic ...
XU Qunwei, LUO Huafeng, MEI Bingxiao, LIU Haojun, ZHU Feibai, ZHU Hanshan, CHEN Xiangrong   +6 more
doaj   +1 more source

Analysis of Gate Drivers for Overvoltage Suppression in Matrix Converters for Integrated Drives

, 2009
Analysis of Gate Drivers for Overvoltage Suppression in Matrix Converters for Integrated DrivesThis paper describes commutation overvoltage suppression methods by means of gate voltage and current control.
Alvis Sokolovs, Ilja Galkins
core   +1 more source

Power operation region modeling and transient overvoltage suppression strategy of hybrid cascaded HVDC

International Journal of Electrical Power & Energy Systems
The hybrid cascaded HVDC system(HC-HVDC) in sending end system is composed of an Line Commutated Converter(LCC) connected in series with a parallel group of Modular Multilevel Converters (MMC).
Jiangshan Liu, Fengting Li, Chunya Yin, Ruikang Chen, Lu Han, Yingping Shi   +5 more
doaj   +1 more source

Research on Formation Mechanism and Suppression Measures of Internal Overvoltage for High-speed Train

机车电传动, 2020
Aiming at the internal overvoltage phenomenon during high-speed train operation, the overvoltage formation mechanism and its influencing factors were analyzed by taking the case of the overvoltage in passing neutral section and the overvoltage of ...
Shanqiang GU, Jingdi SUN, Rui ZHANG, Heng XU, Kun CHEN   +4 more
doaj  

Electromagnetic transient suppression for thyristor switch‐based auto‐passing neutral section system

IET Power Electronics, 2023
The auto‐passing neutral section (ANS), applied in the traction substation or section post (SP), is one of the effective methods to improve the continuity of power supply, and the electromagnetic transient is the key issue impacting its application value.
Wu Liran, Wu Mingli, Liu Qiujiang, Liu Jianqiang   +3 more
doaj   +1 more source

Carbon Interlayer with Uniformly Anchored ZnO Nanoparticles: Surface‐Energy‐Driven Coble Creep for Practical Anode‐Free Solid‐State Batteries

Advanced Science, EarlyView.
We used a zinc oxide–carbon composite interlayer (ZnO@C) via the electron‐beam (e‐beam) irradiation method to fabricate a cost‐effective, high‐energy‐density, anode‐free solid‐state battery. Chemical anchoring between the ZnO and carbon enabled uniform nanoscale morphology, mitigating the high surface energy of the ZnO NPs.
Joonhyeok Park, Jeongheon Kim, Seungwoo Lee, Jaeik Kim, Il Woo Ock, Seunggun Choi, Jooheon Sun, Gunwoo Cha, Seungmin Han, Hyungjun Lee, Jun Lim, Hyun‐Suk Kang, Jiung Cho, Jong Sung Jin, Seho Sun, Ungyu Paik, Taeseup Song   +16 more
wiley   +1 more source

Fundamental Modeling of the Switching Transition in High-Speed Power Electronics

IEEE Access
Recent advances in semiconductor technology have paved the way for ultra-fast switching capabilities. This increase in switching speed enhances efficiency, power density, and frequency but also increases overvoltage oscillations at the switching node ...
Francois P. Du Toit, Ivan W. Hofsajer
doaj   +1 more source

Suppressing Dendrite Formation through Au‐Driven Interfacial Engineering for Solid‐State Lithium‐Metal Batteries

Advanced Energy Materials, EarlyView.
A thin gold nanolayer on lithium metal enables stable and uniform lithium plating in solid‐state batteries, enabling nearly 1 year and 11 months of continuous operation. The conductive coating lowers interfacial resistance, suppresses dendrite growth, and improves cycling stability, attributed to homogeneous deposition of Li+ on the gold layer ...
Natalia Voronina, Seyo Oh, Bibin Jose, Jongchan Park, Sun Kim, Jinhong Park, Kwang Heo, Jae‐Hong Lim, Chan‐Woo Lee, Payam Kaghazchi, Seung‐Taek Myung   +10 more
wiley   +1 more source