Results 61 to 70 of about 1,954,001 (140)

Living in the E‐Commerce Countryside: Place Attachment and the Negotiation of Place Change in Rural China

Journal of Community &Applied Social Psychology, Volume 36, Issue 5, September/October 2026.
ABSTRACT Rapid digitization is transforming rural communities worldwide, yet current scholarship remains dominated by macro‐economic analyses. This study examines the micro‐dynamics of engagement in E‐commerce villages through the lens of lived experience.
Nan Yang, Mallika Bose
wiley   +1 more source

Analysis of the multi-quadrant regulation ability and rapid reactive power support control strategy of CLCC

International Journal of Electrical Power & Energy Systems
The controllable line-commutated converter (CLCC) achieves forced commutation by using a hybrid connection of IGBTs and thyristors, effectively solving the inherent commutation failure (CF) problem of the line-commutated converter (LCC).
Yechun Xin, Zhiqiang Ma, Tuo Wang, Guoqing Li, Yupeng He, Shouqi Jiang   +5 more
doaj   +1 more source

A predictive control strategy for mitigation of commutation failure in LCC-based HVDC systems [PDF]

, 2019
High-voltage direct-current (HVDC) systems are being widely employed in various applications because of their numerous advantages such as bulk power transmission, efficient long-distance transmission, and flexible power-flow control.
Mat Said, Dalila, Dysko, Adam, Tzelepis, Dimitrios, Booth, Campbell, Mirsaeidi, Sohrab, Dong, Xinzhou   +5 more
core   +3 more sources

HVDC converter simulation model with turn-off characteristics of series thyristors

International Journal of Electrical Power & Energy Systems
The converter models in common electromagnetic transient simulation software cannot reflect the dynamic turn-off process and the dispersity of series thyristors, which leads to inaccurate judgment and simulation of the commutation failure (CF).
Yupeng He, Yechun Xin, Guoqing Li, Tuo Wang, Shouqi Jiang, Weiru Wang, Yanxu Wang   +6 more
doaj   +1 more source

Combined Simulation Based Commutation Failure Analysis in HVDC Systems

, 2011
Commutation failures may lead to serious consequences such as DC blocks. A simulation method of joint using the electromagnetic transient program and the electromechanical transient program is presented to analyze commutation failures.
Wen Bin Ci, Yu Tian Liu
core   +1 more source

A novel control strategy to suppress transient overvoltage balancing active power impact reduction caused by commutation failure

International Journal of Electrical Power & Energy Systems
The line-commutated high voltage direct current (LCC-HVDC) is easy to occur commutation failure (CF), during the CF and recovery period, lots of reactive power surplus can cause transient overvoltage (TOV) in the sending end system.
Wan Liu, Chunya Yin, Fengting Li, Xiaozhu Li, Lu Han, Yining Zhang   +5 more
doaj   +1 more source

De la gestion des contraintes de commutation à la commutation douce

, 2008
Cet article a pour objet l’étude des contraintes de commutation. En pratique, les composants semi-conducteurs, avec leurs caractéristiques et leurs imperfections, impactent grandement les paramètres de fonctionnement de la cellule, comme la vitesse de ...
Foch, Henri, Meynard, Thierry, Richardeau, Frédéric, Metz, Michel, Piquet, Hubert   +4 more
core  

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

Effect of Inter-System Coupling on Heat Transport in a Microscopic Collision Model. [PDF]

Entropy (Basel), 2021
Tian F, Zou J, Li L, Li H, Shao B.
europepmc   +1 more source

The Elementary Particles of Quantum Fields. [PDF]

Entropy (Basel), 2021
Jaeger G.
europepmc   +1 more source