Results 1 to 10 of about 13,218 (165)

High Frequency Transformers for Solid-State Transformer Applications

open access: yesApplied Sciences, 2023
This paper focuses on the study of the high frequency transformer incorporated in solid- state transformers, specifically on the development of the steps that enable the design of an optimized high frequency transformer and its equivalent model based on ...
Nuno Santos   +5 more
doaj   +3 more sources

The Effects of K-BNNS Nanoparticles on PD Characteristics of Composite Aramid Paper [PDF]

open access: yesNanomaterials
Aramid paper serves as an insulating material in high-frequency power electronic transformers, and the incorporation of composite K-BNNS particles has been shown to enhance the insulating properties of aramid paper.
Yan-Hong Chen   +5 more
doaj   +2 more sources

Investigation on the Parasitic Capacitance of High Frequency and High Voltage Transformers of Multi-Section Windings

open access: yesIEEE Access, 2020
Resonant converters are widely used in high voltage applications thanks to the soft switching technologies. The high frequency and high voltage (HFHV) transformer is the most complicated and important part to boost the voltage by tens or hundreds of ...
Le Deng   +4 more
doaj   +3 more sources

The simulation of a new high frequency transformer

open access: yesJournal of Energy Systems, 2022
Core losses of transformers motivate many engineers and scientists to design and implement different transformers for their specific aims. Since there exists a growing interest on high frequency applications in today’s world, design and optimization studies of a magnetic fluid core transformer (MFCT), having an easy and cheap production approach in ...
Sude HATEM, Erol KURT
openaire   +4 more sources

Analysis and calculation of magnetic flux density distribution and core loss of nanocrystalline transformer

open access: yesEnergy Reports, 2022
Nanocrystalline transformers have better electromagnetic properties than electrical steel transformers, such as lower losses. Nowadays, numerous nanocrystalline magnetic cores have served in the research work of high-frequency transformers, but there is ...
Zhenyu Cai   +3 more
doaj   +1 more source

Modeling Current Distribution Within Conductors and Between Parallel Conductors in High-Frequency Magnetics

open access: yesIEEE Open Journal of Power Electronics, 2022
In both planar and wire-wound transformers, large copper cross-sections and parallel windings are often used to increase conduction area and decrease copper loss.
Michael Solomentsev, Alex J. Hanson
doaj   +1 more source

High-frequency transformation of Rhizobium meliloti [PDF]

open access: yesJournal of Bacteriology, 1988
Transformation of R factor RP4 and its derivative pRK290 from Escherichia coli to Rhizobium meliloti is reported. The efficiency of transformation was in the range of 10(-5) per viable cell. In addition, chromosomal DNA prepared from one R. meliloti strain resistant to streptomycin was transferred to the isoleucine-valine-requiring mutant susceptible ...
J, Courtois, B, Courtois, J, Guillaume
openaire   +2 more sources

High-Frequency Current Transformers Cascade for Power Electronics Measurements

open access: yesSensors, 2022
High-frequency current transformers (HFCT) are widely used to measure fast transient current. Their advantages are simple structure and relatively moderate price.
Maciej Chojowski   +3 more
doaj   +1 more source

Exploring the Advantages of Transformers for High-Frequency Trading

open access: yesSSRN Electronic Journal, 2023
This paper explores the novel deep learning Transformers architectures for high-frequency Bitcoin-USDT log-return forecasting and compares them to the traditional Long Short-Term Memory models. A hybrid Transformer model, called \textbf{HFformer}, is then introduced for time series forecasting which incorporates a Transformer encoder, linear decoder ...
Fazl Barez   +3 more
openaire   +2 more sources

A Higher-Order Loss-Separation Model for Fast Estimation of Core Loss in High-Frequency Transformers

open access: yesIEEE Access, 2023
The core loss calculation is essential for the design and performance evaluation of high-frequency transformers. It is related to the dimensions, temperature rises performance, and operating efficiency of transformer designs.
Lujia Wang   +5 more
doaj   +1 more source

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