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Augmented Models of High-Frequency Transformers for SMPS [PDF]
, 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
Savi, Patrizia +3 more
core +1 more source
The Performance of an Integrated Transformer in a DC/DC Converter [PDF]
TELKOMNIKA (Telecommunication Computing Electronics and Control), 2017 The separation between the low-voltage part and high-voltage part of the converter is formed by a transformer that transfers power while jamming the DC ring. The resonant mode power oscillator is utilized to allow elevated competence power transfer.
Abdelhadi Namoune +2 more
openaire +2 more sources
Space charge behavior in multi-layer oil-paper insulation under different DC voltages and temperatures [PDF]
, 2010 Oil-paper as a reliable insulation system is widely used in power transformers and cables. The dielectric properties of oil-paper insulation play an important role in the reliable operation of power equipment. However, the formation and dynamics of space
Liao, Rujin +7 more
core +1 more source
A self-correcting method for bad data in flexible DC line protection based on digital twinning
电力工程技术, 2023 DC line protection is the key to the development of flexible DC grids, and fault identification within 3 ms is required. Existing scholars have proposed a digital twinning based flexible DC line protection method with high speed and sensitivity ...
HE Jinghan +5 more
doaj +1 more source
IEEE Access, 2020 The main dielectric medium in converter transformers is the oil-pressboard. The valve windings of converter transformers are subjected to AC-DC combined voltage. Creepage discharge is a common defect of oil-pressboard insulation.
Peng Zhou +5 more
doaj +1 more source
A Comprehensive Assessment of Multiwinding Transformer-Based DC–DC Converters
IEEE Transactions on Power Electronics, 2021 Multiwinding-transfomer-based (MTB) dc–dc converter did emerge in the last 25 years as an interesting possibility to connect several energy systems and/or to offer higher power density because of the reduction of transformer core material and reduction of power converter stages.
Thiago Pereira +3 more
openaire +2 more sources
Reachability Analysis of Transformer-Isolated DC-DC Converters
EPiC Series in Computing, 2018 Various mission-critical applications necessarily require a transformer in switching converters to obtain DC isolation between the converters’ input and output. Since DC-DC converters are the switching devices, these are modeled as hybrid automata. We present hybrid automaton modeling of two main types of transformer isolated DC-DC converters, namely ...
Omar Beg, Ali Davoudi, Taylor T. Johnson
openaire +2 more sources
Zhongguo dianli, 2020 Based on the operating characteristics of the DC blocking devices, this paper analyzes the influence of the DC blocking devices on the DC current near the neutral point of the transformers, and proposes a multi-objective optimization configuration method
Hongwei LIU
doaj +1 more source
Energies, 2017 Partial discharge (PD) behaviors of oil-paper insulation is distinctive in AC and DC combined electric fields in converter transformers from PD behaviors in pure AC or DC electric fields.
Jiantao Sun +4 more
doaj +1 more source
Space charge dynamics in oil and thick pressboard combined system under polarity reversal voltage [PDF]
, 2014 In this study, the space charge dynamics in an oil and oil impregnated pressboard combined insulation system are investigated by the means of pulsed electroacoustic (PEA) technique under voltage polarity reversal conditions. To be closer to the real case
Hao, Miao +9 more
core +1 more source