Results 61 to 70 of about 914,586 (343)
THE RESEARCH ON SPECIAL ELECTRONIC POWER TRANSFORMER
Electrica, 2009 In many circumstances, three-phase AC power supply is not always the best choice for utility applications. In fact, there is a rating of three-phase to single-phase, three-phase to dual-phase and three-phase to multiphase transformers being in operation ...
Change CHEN +3 more
doaj +2 more sources
Connection and Control Strategy of PV Converter Integrated into Railway Traction Power Supply System
Energies, 2020 In order to supply the single-phase locomotive load and mitigate the negative sequence current, this paper develops a V/V transformer-based connection and control strategy of three-phase photovoltaic (PV) converters integrated into railway traction power
Peng Cheng +4 more
doaj +1 more source
Sequence determinants of RNA G‐quadruplex unfolding by Arg‐rich regions
FEBS Letters, EarlyView.We show that Arg‐rich peptides selectively unfold RNA G‐quadruplexes, but not RNA stem‐loops or DNA/RNA duplexes. This length‐dependent activity is inhibited by acidic residues and is conserved among SR and SR‐related proteins (SRSF1, SRSF3, SRSF9, U1‐70K, and U2AF1).
Naiduwadura Ivon Upekala De Silva +10 more
wiley +1 more source
Modeling Inverter Losses for Circuit Simulation [PDF]
, 2004 Transformer-like inverter models can represent a very good alternative to common switch-diode models for simulation, reducing convergence problems and/or calculation time.
Fratta, Antonino, Scapino, Federico
core +1 more source
Identification of Transformer Parameters Using Dandelion Algorithm
Applied System InnovationResearchers tackled the challenge of finding the right parameters for a transformer-equivalent circuit. They achieved this by minimizing the difference between actual measurements (currents, powers, secondary voltage) during a transformer load test and ...
Mahmoud A. El-Dabah, Ahmed M. Agwa
doaj +1 more source
FEBS Letters, EarlyView.The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li +2 more
wiley +1 more source
Introducing small storage capacity at residential PV installations to prevent overvoltages [PDF]
, 2011 Low voltage distribution feeders are designed for unidirectional energy supply from transformer to consumer. However, the implementation of small-scale PV production units on local utilities may result in bidirectional energy flows.
Cappelle, Jan +6 more
core +1 more source
Transformer Iron Core Temperature Field Calculation Based on Finite Element Analysis
EnergiesTemperature anomaly is a common fault in power transformers; therefore, achieving a fast and accurate calculation of the transformer temperature field is of great significance.
Ziyang Chen, Zhenggang He, Shuhong Wang
doaj +1 more source
Journal of Mechatronics, Electrical Power, and Vehicular Technology, 2023 The increasing use of power electronics in various sectors leads to harmonic distortion in electric power systems, affecting power quality and equipment longevity.
Langlang Gumilar +4 more
doaj +1 more source
Structural biology of ferritin nanocages
FEBS 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