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Optimal Design of High Frequency Transformer for High Power Density Flyback Converter
IEEE Transactions on Circuits and Systems - II - Express Briefs, 2022This brief presents an optimal design of high power frequency transformer for flyback converter based on E-mode GaN device, which could be used in personal portable chargers. The new generation of wide band gap semiconductor GaN switch is used to improve
Xiaoqiang Guo +4 more
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IEEE transactions on magnetics, 2022
Vibration and acoustic noise are essential in electrical equipment. Amorphous alloy is widely used in the medium- to high-frequency transformer due to its low loss, but its significant vibration and noise cannot be ignored, which will even reduce the ...
Yongjian Li +3 more
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Vibration and acoustic noise are essential in electrical equipment. Amorphous alloy is widely used in the medium- to high-frequency transformer due to its low loss, but its significant vibration and noise cannot be ignored, which will even reduce the ...
Yongjian Li +3 more
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Planar Structure High-Frequency Transformer Design for Medium Voltage Applications
European Conference on Cognitive Ergonomics, 2022Planar structure high frequency transformer solution is proposed for medium voltage applications. The high voltage side windings are made of modular PCB boards and high electric field can be well confined within the PCB insulation material by the coated ...
Ruxi Wang +4 more
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Design of High Frequency Transformer for a Dual Active Bridge (DAB) Converter
2022 IEEE Global Conference on Computing, Power and Communication Technologies (GlobConPT), 2022Dual Active Bridge (DAB) converter became very popular among the isolated bidirectional DC-DC converters for high voltage and high power applications due to its high power density and higher efficiency. The high power density is achieved as the isolation
Shuvankar Dey +3 more
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IEEE Journal of Emerging and Selected Topics in Power Electronics, 2022
The leakage inductance of a high-frequency transformer affects the operating mode and performance in dc/dc converters, so it is necessary to calculate the leakage inductance accurately. In the existing analytical calculation methods of leakage inductance
Hao Yin +5 more
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The leakage inductance of a high-frequency transformer affects the operating mode and performance in dc/dc converters, so it is necessary to calculate the leakage inductance accurately. In the existing analytical calculation methods of leakage inductance
Hao Yin +5 more
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Effect of High-Frequency Transformer Parasitic Capacitances on Operation of Solid-State Transformers
2022 Second International Conference on Power, Control and Computing Technologies (ICPC2T), 2022This paper examines the effects of parasitic capacitances of the high-frequency transformer on matrix converter based solid-state transformer (SST) operation. SSTs involve high frequency transformers for isolation.
Archit Joshi, S. Nath
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Insulation Design on High-Frequency Transformer for Solid-State Transformer
European Conference on Cognitive Ergonomics, 2021A Solid-state transformer (SST) directly reduces medium voltage to low voltage (e.g. 1.1 kV) with minimized power conversion stages. High-frequency transformer plays an important role in the DC/DC module of the SST from insulation and power density ...
Zheqing Li +4 more
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Single-Phase AC-DC-AC Multilevel Five-leg Converter Based on a High-Frequency Transformer
European Conference on Cognitive Ergonomics, 2021In this paper, a single-phase AC-DC-AC multilevel five-leg converter based on a high-frequency transformer (HFT) is investigated. The system consists of a three-leg module with an H-bridge connected to the shared part of the system. The power quality and
J. T. Cardoso +3 more
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IEEE transactions on magnetics, 2021
The effective downsizing of power supply for railway by increasing the drive frequency is essential considering the mounting space. However, an increase in the drive frequency increases the loss in switching and magnetic elements used for power supplies.
K. Shimura +6 more
semanticscholar +1 more source
The effective downsizing of power supply for railway by increasing the drive frequency is essential considering the mounting space. However, an increase in the drive frequency increases the loss in switching and magnetic elements used for power supplies.
K. Shimura +6 more
semanticscholar +1 more source
High frequency transformation ofKalanchoe laciniata
Plant Cell Reports, 1989Leaf explants ofKalanchoe laciniata were cocultivated for different days (2, 4, 6 and 8 days) with disarmedAgrobacterium tumefaciens strains A208SE, GV3111SE and EHA101 carring a binary vector pROA93. The vector contains a cauliflower mosaic virus 35S promotor which drives the coding sequence of neomycin phosphotransferase II (NPT-II) in one direction ...
S R, Jia, M Z, Yang, R, Ott, N H, Chua
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