Results 121 to 130 of about 65,616 (327)

Impedance Estimation for Transient Stability Enhancement of Virtual Synchronous Machines

2024 IEEE 15th International Symposium on Power Electronics for Distributed Generation Systems (PEDG)
In this paper, a passive technique for estimating the impedance and voltage of a Thévenin grid is presented. The method can be applied when either the maximum active power or minimum reactive power operating point, with respect to the power angle, is crossed. This work addresses transient events, for which the former occurs.
Pepper, Benjamin, Campos-Gaona, David
openaire   +2 more sources

System frequency response model and droop coefficient setting considering renewable energy participation in frequency regulation

Frontiers in Energy Research
The highly uncertain and uncontrollable power output of renewable energy sources (RES), when integrated into power systems at high penetration levels, reduces system inertia and introduces uncertain changes in system structure, parameters, and frequency ...
Yuyan Song, Yongjie Zhang, Shuai Zhang, Fang Liu, Yunche Su, Yang Liu   +5 more
doaj   +1 more source

Blended and digital approaches in histology and pathology teaching: A scoping review

Anatomical Sciences Education, EarlyView.
Abstract Histology and pathology education is evolving, driven by the integration of digital microscopy with other technological advances. Gaining insight into the impact of this transition, while understanding the perspectives of both students and educators, is important for improving teaching practices. This includes mapping teaching methods, digital
Eleonora Nava, Ashis Jalote‐Parmar, Cecilie Våpenstad, Marit Valla   +3 more
wiley   +1 more source

Face-to-face and online interactions - is a task a task? [PDF]

, 2006
This study contrasts two different ways of analysing interaction and participation in language learning tutorials: Social network analysis of frequency and QSR analysis of type of interaction. One task from three German beginners' language tutorials (one
Batstone, Carolyn, Duensing, Annette, Heins, Barbara, Stickler, Ursula   +3 more
core  

Investigation on hard‐rock breaking performance and auxiliary mechanism of picks assisted with both‐sided high‐pressure water jets

Deep Underground Science and Engineering, EarlyView.
This paper investigates the high‐pressure water jet‐pick combined rock‐breaking mode (HPC), which employs high‐pressure water jets to precut grooves on both sides of the picks. The rock‐breaking patterns and performance of the HPC method are obtained, and the auxiliary rock‐breaking mechanism of water jet grooving is revealed.
Jingjing Lu, Jiancheng Xiao, Hui Zhou, Xiao Ma, Congcong Hou, Jian Cui, Fujian Yang   +6 more
wiley   +1 more source

Two‐Dimensional Piezoelectric Nanomaterials for Nanoelectronics and Energy Harvesting

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Two‐Dimensional Piezoelectric Nanomaterials from properties to applications. Smart materials, especially piezoelectric materials, have gained popularity over the last two decades. Two‐dimensional (2D) piezoelectric materials exhibit attributes including great flexibility, ease of workability, extensive surface area, and many active sites, indicating ...
Yujun Cao, Sikandar Aftab, Zeeshan Ali, Muhammad Farooq Khan, Ghazanfar Nazir, Awais Khalid, Hosameldin Helmy Hegazy, Ibrahim S. Yahia, Altaf Hussain Rajpar, Burragoni Sravanthi Goud, Jae Hong Kim, Erdi Akman, Xin Li   +12 more
wiley   +1 more source

Exploiting replication in distributed systems [PDF]

Techniques are examined for replicating data and execution in directly distributed systems: systems in which multiple processes interact directly with one another while continuously respecting constraints on their joint behavior.
Birman, Kenneth P., Joseph, T. A.
core   +1 more source

A Parallel Virtual Machine for Bulk Synchronous Parallel ML [PDF]

, 2003
Frédéric Gava, Frédéric Loulergue
openalex   +1 more source

Internal Voltage Frequency Response Model of Grid‐Forming DFIG‐Based Wind Turbine and Its Characteristics

IET Renewable Power Generation
The system frequency response (SFR) of doubly‐fed induction generator (DFIG) is different from synchronous generator (SG). A grid‐forming DFIG via virtual synchronous control of inner voltage vector is proposed to mimic the characteristics of SFR of SG ...
Han Yuan, Delin Wang, Xin Zhou, Jun Wang, Muhammad Shahid Mastoi   +4 more
doaj   +1 more source

Advanced Virtual Impedance for Power‐Sharing Improvement in Microgrids Using Different SOGI Methods: A Comparative Study

Energy Technology, EarlyView.
Advanced virtual impedance control integrating multiple second‐order generalized integrator (SOGI) variants—SOGI, ESOGI, MSOGI, and DSOGI—enhances power and harmonic sharing accuracy in islanded microgrids. The comparative study quantifies performance–complexity trade‐offs, demonstrating up to 65% total harmonic distortion (THD) reduction and improved ...
Camelia Ait Hammouda, Abdellah Benallal, Rafik Bradai, Adrian Ilinca   +3 more
wiley   +1 more source