Results 31 to 40 of about 145,997 (307)

INTERNAL RESONANCE FOR POWER TRANSFORMER INTERACTED WITH CABLE TRANSIENTS

open access: yesYanbu Journal of Engineering and Science, 2019
Power transformers may be subjected to switching surges or fault events that may be responsible for internal transformer resonance. This paper deals with two scenarios of cable-transformer resonance.
Alyaa A. Nassar   +3 more
doaj   +1 more source

Modularized Three-Phase Semiconductor Transformer with Bidirectional Power Flow for Medium Voltage Application

open access: yesEnergies, 2016
This paper describes a prototype of modularized three-phase semiconductor transformer that was developed in the lab for feasibility study. The developed prototype is composed of three units of single-phase semiconductor transformer coupled in Y ...
Do-Hyun Kim   +2 more
doaj   +1 more source

Finite element analysis of magnetic fields taking into account hysteresis characteristics [PDF]

open access: yes, 1985
A new technique for taking into account hysteresis has been developed. The paper describes the details of the method and the usefulness of the technique is clarified by applying it to the analysis of magnetic fields in single-phase transformer cores. The
Kawase, Y.   +2 more
core   +1 more source

Parent Quality of Life at Two Years Following Their Child's Completion of Acute Lymphoblastic Leukemia Treatment

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Background Parents of children treated for acute lymphoblastic leukemia (ALL) often experience significant caregiver burden and disruption to their well‐being. While parent quality of life (QoL) during treatment is well characterized, little is known about outcomes during early survivorship.
Sara Dal Pra   +3 more
wiley   +1 more source

Exploiting buck–boost duality in dual active bridge modular multilevel converters to achieve high DC step ratios

open access: yesHigh Voltage, 2021
A previously unidentified duality between buck and boost configured dc‐ac modular multilevel converters (MMCs) is firstly revealed. Armed with this insight, a new dual‐active‐bridge (DAB)‐MMC is proposed for high‐voltage dc (HVDC)‐to‐medium‐voltage dc ...
Sunny Kung   +5 more
doaj   +1 more source

Modeling of Spatial Uncertainties in the Magnetic Reluctivity

open access: yes, 2016
In this paper a computationally efficient approach is suggested for the stochastic modeling of an inhomogeneous reluctivity of magnetic materials. These materials can be part of electrical machines, such as a single phase transformer (a benchmark example
Jankoski, Radoslav   +2 more
core   +1 more source

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

Estimation of Equivalent Circuit Parameters of Single-Phase Transformer by Using Chaotic Optimization Approach

open access: yesEnergies, 2019
This paper deals with parameter estimation of single-phase transformer equivalent circuit by using Chaotic Optimization Approach (COA). Unknown transformer equivalent circuit parameters need to be accurately estimated for the best possible matching ...
Martin Ćalasan   +3 more
doaj   +1 more source

Low phase-shift amplifier [PDF]

open access: yes, 1972
Single-stage MOSFET amplifier is described which is identical to standard neutralized amplifier except that neutralization provided by broadband transformer is applied to AGC gate instead of signal gate.
Coffin, R. C., Lutes, G. F.
core   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

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