Results 21 to 30 of about 217 (212)

A Novel Phase‐Shifted Modulation for Balancing Current Stress During Startup of High‐Power Full‐Bridge DC/DC Converters

open access: yesThe Journal of Engineering
Traditional duty‐cycle or phase‐shift modulation is inadequate for achieving a balanced current‐stress distribution during the startup of full‐bridge DC/DC converters. As converter power capacity increases, these limitations not only restrict the startup
Yiqing Ma   +4 more
doaj   +1 more source

Comparison of boost and LLC converter and active clamp isolated full-bridge boost converter for photovoltaic DC system

open access: yesThe Journal of Engineering, 2019
DC collection network offers an attractive alternative to AC network for photovoltaic, as it avoids the charging current issues and reduces the size and weight. Variable voltage gain DC/DC converters play an important role in DC collection network.
Jiye Liu   +3 more
doaj   +1 more source

Dose‐dependent hepatotoxicity of hydrogen peroxide in HepG2 cells and its modulation by CYP450 induction

open access: yesFEBS Open Bio, EarlyView.
NMR metabolomics revealed concentration‐dependent metabolic perturbations in HepG2 cells exposed to H2O2. Rifampicin pretreatment enhanced metabolic competence, attenuated toxin‐induced alterations and produced metabolite profiles more consistent with human liver physiology, supporting the use of CYP450‐induced HepG2 models for improved in vitro ...
Maren Jinks   +4 more
wiley   +1 more source

A partial energy current‐sharing method for interleaved LLC converter with phase shift current balance module

open access: yesElectronics Letters
A partial energy current‐sharing method for an interleaved LLC resonant converter with a phase shift current balance module (CBM) is presented in this paper.
Hui Chen, Guohai Ren, Lihai Yao
doaj   +1 more source

Non-isolated resonant link DC–DC converter for use with GaN devices

open access: yesThe Journal of Engineering, 2019
As new wide band-gap (WBG) devices are developed and improved, new topologies and control schemes are required to take advantage of the ultra-fast switching turn on/off speeds that are now available, without the limitations of switching losses and ...
Maria Orr   +2 more
doaj   +1 more source

Accurate and noninvasive prostate cancer detection using plasma‐derived extracellular vesicle RNA

open access: yesFEBS Open Bio, EarlyView.
Plasma extracellular vesicles were captured with WGA‐conjugated magnetic beads and profiled for RNA biomarkers. A three‐RNA panel (NM_024955, NR_047469, and NR_002564) distinguished prostate cancer from healthy controls and benign prostatic hyperplasia, supporting a simple, noninvasive approach to improve prostate cancer detection.
Hanping Wei, Haoran Wu, Wei Feng
wiley   +1 more source

Morphing control strategy of wide input voltage DR‐LLC converter for vehicle power supply

open access: yesIET Power Electronics
Electric vehicles have experienced substantial global growth. However, significant fluctuations in the output voltage of power batteries and abrupt changes in the input voltage of DC–DC converters pose major challenges to their safety and reliability ...
Litong Zheng   +6 more
doaj   +1 more source

Pulse frequency modulation and unilateral dual-phase-shift hybrid control strategy for bidirectional full-bridge LLC resonant converter

open access: yesThe Journal of Engineering, 2019
Bidirectional LLC resonant converter has been popular in applications such as electric vehicle, energy storage system and uninterruptible power supply for its good soft-switching characteristics.
Fengyi Zhang   +3 more
doaj   +1 more source

Heterotropic regulation and negative homotropic cooperativity

open access: yesFEBS Open Bio, EarlyView.
We identified a structural module common to some proteins that couple negative cooperativity with heterotropic regulation, two features that rarely coexist. These proteins are ring‐like and present an ordered asymmetry whereby noncontacting subunits are symmetric, and their tertiary structure differs from that of contacting subunits.
Veronica Morea   +5 more
wiley   +1 more source

Virtual prototype and GaN HEMT based high frequency LLC converter design

open access: yesThe Journal of Engineering, 2019
Gallium nitride (GaN) high-electron-mobility transistor (HEMT) with the merits of the fast switch speed, low on resistance and low switch loss is applicable to high-frequency LLC converters.
Long Xiao   +4 more
doaj   +1 more source

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