Results 31 to 40 of about 262 (174)

A soft switching four‐phase converter with ultra‐high step down conversion ratio and automatic uniform current sharing

open access: yesIET Power Electronics, 2021
This paper introduces a new high step down four‐phase converter with soft switching and automatic uniform current sharing. The phase number of the introduced topology can be expanded.
Amin Asghari
doaj   +1 more source

Development of a three‐phase interleaved converter based on SEPIC DC–DC converter operating in discontinuous conduction mode for ultra‐fast electric vehicle charging stations

open access: yesIET Power Electronics, 2021
One of the main challenges that impact transportation systems electrification is their batteries' charging process. This work presents the development of a three‐phase ultra‐fast Electric Vehicle (EV) charger based on the SEPIC converter.
Bayan Hussein, Nima Abdi, Ahmed Massoud
doaj   +1 more source

Multi‐harmonic oscillation and stability analysis of double‐input buck/buck‐boost inverter

open access: yesIET Power Electronics, 2021
In this study, multi‐harmonic oscillation behaviour and stability problem in double‐input buck/buck–boost inverter are investigated both theoretically and experimentally.
Hao Zhang   +3 more
doaj   +1 more source

Selection of an IGCT for multilevel converters dedicated to high‐voltage direct current grid connection of offshore wind‐farms

open access: yesIET Power Electronics, 2021
Grid connection of remote offshore wind‐parks uses high‐voltage direct current technology and in order to reduce costs and losses and maximise profitability, semiconductor power losses must be minimised.
Davin Guedon   +5 more
doaj   +1 more source

Model predictive control of a hybrid stacked multicell converter with voltage balancing and fault tolerance capability

open access: yesIET Power Electronics, 2021
Due to the merits of low conduction losses and superior output power quality, a hybrid stacked multicell converter (HSMC) was put forward as a competitive alternative in the medium/low‐voltage high‐efficiency applications. A nine‐level HSMC (9L‐HSMC) can
Shuai Xu   +4 more
doaj   +1 more source

Fault ride‐through strategy for hybrid HVDC with cascaded multi‐infeed MMC inverters

open access: yesElectronics Letters, 2021
The hybrid HVDC with cascaded multi‐infeed MMC inverters suffers from the fragile characteristic of its MMC inverters and is easy to be over current and over voltage.
Jingbo Zhao   +4 more
doaj   +1 more source

Salmonella lipopolysaccharide‐containing supported lipid bilayers as platforms to study bacteriophage interactions

open access: yesFEBS Letters, EarlyView.
We present robust protocols for the preparation of supported lipid bilayers (SLBs) incorporating either Salmonella smooth LPS or outer membrane vesicles (OMVs). We use a combination of quartz crystal microbalance with dissipation (QCM‐D) and fluorescence microscopy to both characterize the SLBs of various compositions and to probe their interactions ...
Hudson P. Pace   +6 more
wiley   +1 more source

A full sequence impedance modelling and stability analysis of the virtual synchronous generator with inner loops

open access: yesIET Renewable Power Generation, 2021
Virtual synchronous generator (VSG) has been widely studied owing to its inertia support to the grid. However, the stability of VSG is not analysed accurately for actual applications in previous studies that overlook voltage and current inner loops of ...
Yang Peng   +5 more
doaj   +1 more source

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Analysis of virtual inductances on the stability of the voltage control loops for LC‐filtered voltage‐controlled voltage‐source inverters in microgrids

open access: yesIET Renewable Power Generation, 2021
Voltage‐controlled voltage‐source inverters (VVSIs) have been widely used in microgrids. Typically, LC filters are adopted by the VVSIs to improve the quality of the output voltage.
Kai Wang   +5 more
doaj   +1 more source

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