Results 51 to 60 of about 246,265 (278)

Implementation of three-phase transformer model in radial load-flow analysis

open access: yesAin Shams Engineering Journal, 2013
This paper presents an efficient approach for developing three-phase transformer admittance matrices in the radial power-flow analysis. The proposed transformer model overcomes the singularity problem of the nodal admittance submatrices of ungrounded ...
Mamdouh Abdel-Akher, Karar Mahmoud
doaj   +1 more source

Breakdown Voltage Characteristic Of Mineral Oil In Power Transformer 16 Mva Updl Semarang

open access: yesTechno, 2020
The transformer is one of the most important equipment in the electric power system, which is to distribute power from power plants to the load centers by step-up or step down the voltage. Transformer is expect to have a high level of reliability. One
Setyo Adi Nugroho, Setyo Aji Priambodo
doaj   +1 more source

Structural biology of ferritin nanocages

open access: yesFEBS Letters, EarlyView.
Ferritin is a conserved iron‐storage protein that sequesters iron as a ferric mineral core within a nanocage, protecting cells from oxidative damage and maintaining iron homeostasis. This review discusses ferritin biology, structure, and function, and highlights recent cryo‐EM studies revealing mechanisms of ferritinophagy, cellular iron uptake, and ...
Eloise Mastrangelo, Flavio Di Pisa
wiley   +1 more source

Ultrasonic localization method based on Chan‐WLS algorithm for detecting power transformer partial discharge faults by fibre optic F‐P sensing array

open access: yesHigh Voltage
Fibre optic F‐P sensor has become one of the mainstream detection methods for partial discharge faults due to their advantages of good insulation, high sensitivity, resistance to electromagnetic interference, simple structure and inexpensive pricing. The
Hong Liu   +8 more
doaj   +1 more source

Synchronizing redundant power oscillators [PDF]

open access: yes, 1969
Outputs of oscillators are synchronized by summing the power transformer phase voltages, the summed voltages are applied to the frequency determining inductors of the individual voltage-controlled power oscillators.
Jenson, K. J.
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Valosin‐containing protein counteracts ATP‐driven dissolution of FUS condensates through its ATPase activity in vitro

open access: yesFEBS Letters, EarlyView.
Biomolecular condensates formed by fused in sarcoma (FUS) are dissolved by high ATP concentrations yet persist in cells. Using a reconstituted system, we demonstrate that valosin‐containing protein (VCP), an AAA+ ATPase, counteracts ATP‐driven dissolution of FUS condensates through its D2 ATPase activity.
Hitomi Kimura   +2 more
wiley   +1 more source

Modeling and Characterization of Series Connected Hybrid Transformers for Low-Profile Power Converters

open access: yesIEEE Access, 2020
Compact and low profile power converters are the main business of today's power industry. A significant volume of a power converter is occupied by the power transformer.
M. Abu Bakar   +2 more
doaj   +1 more source

Three-phase power transformer modelling in AC/DC traction substations [PDF]

open access: yesMATEC Web of Conferences, 2019
Three-phase power transformer is one of the most important elements in the electric power systems, and it plays a significant role in terms of energy savings.
Bulucea Cornelia A.   +3 more
doaj   +1 more source

CORRECTION OF THE HIGH-FREQUENCY TRANSFORMER ASYMMETRY OF UNDISTURBED POWER SUPPLY OF LIMITED POWER [PDF]

open access: yes, 2018
Study the possibilities to adjust asymmetry of the high frequency transformer as a component of an undisturbed power supply ...
BORODAI, Valery   +13 more
core  

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