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High Frequency Transformers for Solid-State Transformer Applications
Applied 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
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Augmented Models of High-Frequency Transformers for SMPS [PDF]
2009 20th International Zurich Symposium on Electromagnetic Compatibility, 2009 The modeling of high-frequency transformers via augmented equivalent circuits is addressed. The augmented models are composed of a low-frequency equivalent and a supplemental element modeled via real rational fitting. They offer both high accuracy levels
Canavero, Flavio +3 more
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Reference High-Voltage Sensing Chain for the Assessment of Class 0.1-WB3 Instrument Transformers in the Frequency Range up to 150 kHz According to IEC 61869 [PDF]
SensorsThis paper presents the development and characterization of a reference high-voltage sensing chain for the calibration and conformity assessment of instrument transformers with Class 0.1-WB3, in the extended frequency range up to 150 kHz, according to ...
Mohamed Agazar +2 more
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Ghost-Free HDR Imaging in Dynamic Scenes via High–Low-Frequency Decomposition [PDF]
SensorsGenerating high-quality high-dynamic-range (HDR) images in dynamic scenes remains a challenging task. Recently, Transformers have been introduced into HDR imaging and have demonstrated superior performance over traditional convolutional neural networks ...
Xiang Zhang +3 more
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Energy 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
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IEEE 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
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High-Frequency Current Transformers Cascade for Power Electronics Measurements
Sensors, 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
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A Higher-Order Loss-Separation Model for Fast Estimation of Core Loss in High-Frequency Transformers
IEEE 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
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High-frequency transformation of Rhizobium meliloti [PDF]
Journal 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
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High frequency transformer computer modeling [PDF]
2007 Australasian Universities Power Engineering Conference, 2007 Frequency response analysis (FRA) technique is nowadays widely used in both factory and field applications as a diagnostic tool for power transformers. The main problem about FRA techniques is to interpret the observed evolution of the frequency response in order to identify failures.
Ahmed A. Siada, Syed Islam
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