Results 111 to 120 of about 277,270 (358)

Reinforcing Fault Ride Through Capability of Grid Forming Voltage Source Converters Using an Enhanced Voltage Control Scheme

IEEE Transactions on Power Delivery, 2019
Medium power distributed energy resources (DERs) are commonly connected to medium voltage distribution systems via voltage source converters (VSCs). Several guidelines and standards have been developed to establish the needed criteria and requirements ...
S. F. Zarei, H. Mokhtari, M. Ghasemi, F. Blaabjerg   +3 more
semanticscholar   +1 more source

The rise of informed consent and retreat from dependence upon unclaimed bodies in anatomy: An overview and assessment

Anatomical Sciences Education, EarlyView.
Abstract The development of anatomy has been marked by ethically questionable practices. This has been because the dissection of human bodies has always existed on the periphery of conventional society, necessitating a range of dubious ways of obtaining dead bodies for educational and research purposes.
David Gareth Jones
wiley   +1 more source

DC fault isolation study of bidirectional dual active bridge DC/DC converter for DC transmission grid application [PDF]

, 2015
Fast isolation and detection of DC faults is currently a limiting factor in high power DC transmission grid development. Recent research has shown that the role of DC/DC converters is becoming increasingly important in solving various DC grid challenges ...
Aboushady, Ahmed A., Ahmed, Khaled H., Harrye, Yasen A.   +2 more
core   +2 more sources

Parental involvement and engagement during COVID‐19 lockdowns: School staff and parents' reflections about children's learning at home

British Educational Research Journal, EarlyView.
Abstract Valuing parental engagement, as part of home–school collaboration, can benefit children's learning. This article focuses on parents and school‐based staff's (N = 120) experiences of children's learning occurring at home during the COVID‐19 lockdowns (2020–2021), both school‐mandated and other learning activities.
Ashley Brett, Bonny L. Hartley, Deborah Wallace, Adewale Magaji, Lorraine Smith, Rachel Wolfendale   +5 more
wiley   +1 more source

A Black Box Doubly Fed Wind Turbine Electromechanical Transient Structured Model Fault Ride-Through Control Identification Method Based on Measured Data

Applied Sciences
With the increasing proportion of grid-connected capacity of new energy units, such as wind power and photovoltaics, accurately constructing simulation models of these units is of great significance to the study of new power systems.
Xu Zhang, Shenbing Ma, Jun Ye, Lintao Gao, Hui Huang, Qiman Xie, Liming Bo, Qun Wang   +7 more
doaj   +1 more source

Fault Ride-Through Power Electronic Topologies for Hybrid Energy Storage Systems

Energies, 2020
This work presents a fault ride-through control scheme for a non-isolated power topology used in a hybrid energy storage system designed for DC microgrids.
Ramy Georgious, Jorge Garcia, Mark Sumner, Sarah Saeed, Pablo Garcia   +4 more
doaj   +1 more source

Advanced Control Strategy of DFIG Wind Turbines for Power System Fault Ride Through [PDF]

, 2012
This paper presents an advanced control strategy for the rotor and grid side converters of the doubly fed induction generator (DFIG) based wind turbine (WT) to enhance the low-voltage ride-through (LVRT) capability according to the grid connection ...
Dong, Zhao Yang, Ostergaard, Jacob, Wong, Kit Po, Xu, Zhao, Yang, Lihui   +4 more
core   +2 more sources

Debunking the Myth: A Dive Into the Role of Relational Capital in Sustainable Food Production Systems

Business Strategy and the Environment, EarlyView.
ABSTRACT The shift towards sustainable food production is essential to address the urgent dual challenges of climate change and population growth, with agricultural cooperatives playing a vital role in this transformation. However, many cooperatives struggle to deliver the expected value to their members.
Ismail Badraoui, Tarik Saikouk, Nejib Fattam, Ahmed Hamdi, Vikas Kumar   +4 more
wiley   +1 more source

Enhanced independent pole control of hybrid MMC-HVDC system [PDF]

, 2018
This paper presents an enhanced independent pole control scheme for hybrid modular multilevel converter (MMC) based on full bridge sub-module (FBSM) and half bridge sub-module (HBSM). A detailed analysis of power distribution between upper and lower arms
Ling, Weixing, Wen, Jingyu, Xiang, Wang, Xu, Lie   +3 more
core   +1 more source

ESG Assurance and Dividends: Evidence From 18 Countries in Africa

Business Strategy and the Environment, EarlyView.
ABSTRACT This study examines the impact of environmental, social and governance (ESG) assurance on a firm's dividend payout policies within the unique African context. Using a staggered difference‐in‐differences (DiD) model, this study examines how voluntary third‐party assurance of ESG reports influences firms' dividend payout policies compared to ...
Samuel Karanja Kogi, June Cao
wiley   +1 more source