Results 31 to 40 of about 1,623,342 (350)

Analysis of the safe operation region of grid-connected converters under time-varying operating point conditions

open access: yesInternational Journal of Electrical Power & Energy Systems
Plenty of engineering operation experience indicates that the performance of grid-connected converters (GCCs) undergoes a transformation in response to alterations in operating points.
Weijie Xie   +6 more
doaj   +1 more source

An accurate analysis method for transient characteristics of DC line faults in voltage source converter‐based DC systems

open access: yesIET Generation, Transmission & Distribution, 2021
Voltage source converter‐based DC systems face severe overcurrent problem under DC line faults, which causes significant influence on security, reliability and stability of the power system. As the theoretical basis for relay coordination and protection,
Zhengguang Xiao   +6 more
doaj   +1 more source

Suspension of Australian National Electricity Market in 2022 Necessitates Mechanism Evolution Ensuring Power Supply Security

open access: yesJournal of Modern Power Systems and Clean Energy, 2023
The National Electricity Market (NEM) in Australia was suspended during June 15-23, 2022, with a primary attribution to the lack of available generation capacity.
Zhenfei Tan   +4 more
doaj   +1 more source

Power supply Patent [PDF]

open access: yes, 1968
Power supply with automatic power factor conversion ...
Kramer, M., Martinage, L. H.
core   +1 more source

Technology for satellite power conversion [PDF]

open access: yes
The work is this reporting period was concentrated on electronically calibrating the bolometer detectors. The calibration is necessary for two reasons: first, the power delivered to the rectifying circuit must be known in order to choose a diode with the
Campbell, D. P.   +2 more
core   +7 more sources

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

open access: yesFEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

A Novel Technique for High-Performance Grid Integrated with Restricted Placement of PV-DG considering Load Change

open access: yesJournal of Electrical and Computer Engineering
The distributed generation (DG) units’ penetrations in power systems are becoming more prevalent. The majority of recent studies are now focusing on how to best position and size PV-DG units to further improve grid performance.
Ayman M. Soliman   +2 more
doaj   +1 more source

Selection process of photovoltaic standalone pumping systems

open access: yesSustainable Energy Research, 2023
The application of a standalone photovoltaic (PV) system for water pumping has increased nowadays in remote areas of developing countries due to proven economic feasibility compared to other traditional alternatives.
Fathy A. Syam, Osama M. Arafa
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

Overview of power quality analysis and control technology for the smart grid

open access: yesJournal of Modern Power Systems and Clean Energy, 2016
With the wide application of non-linear loads and the large-scale access of distributed energy generations based on power electronics equipments, power quality problems in the distribution network are increasingly serious with new characteristics ...
An Luo   +3 more
doaj   +1 more source

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