Results 51 to 60 of about 363 (265)

A high step‐up high step‐down coupled inductor based bidirectional DC–DC converter with low voltage stress on switches

IET Power Electronics
This paper proposes, a novel soft‐switching bidirectional direct current to direct current (DC–DC) converter based on switched‐capacitor and coupled‐inductor.
Pouya Abolhassani, Mohammad Maalandish, Ali Nadermohammadi, Mohammad Bagher Bannae Sharifian, Mohammad Reza Feyzi, Seyed Hossein Hosseini   +5 more
doaj   +1 more source

New modulation scheme for bidirectional qZS modular multi-level converters

The Journal of Engineering, 2019
This study proposes a dedicated modulation scheme for a bidirectional quasi-Z-source (qZS) modular multi-level converter. The operation principle and a suitable pulse-width modulation method are proposed.
Fatma A. Khera, Christian Klumpner, Pat W. Wheeler   +2 more
doaj   +1 more source

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

Hybrid control approach for fast switching MMCs

The Journal of Engineering, 2019
This study presents a new hybrid control approach for different control and switching frequencies for converters of the modular multi-level converter (MMC) family.
Mathias Schnarrenberger, Dennis Bräckle, Michael Braun   +2 more
doaj   +1 more source

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Optimizing photoactivation of PA‐mCherry for optical pooled CRISPR screens

FEBS Open Bio, EarlyView.
Photoactivatable PA‐mCherry finds widespread use to optically tag individual cells. However, confocal 405 nm UV laser‐scanning (normal scan) is much less efficient than widefield UV illumination, limiting the use of PA‐mCherry on confocal instruments. We remedy this limitation by reporting that rapid and repeated confocal scanning with a low‐intensity,
Sravasti Mukherjee, Giulia Zanetti, Bram van den Broek, Kees Jalink   +3 more
wiley   +1 more source

Analysis and Implementation of an Interleaved High Step‐Up Converter With Zero‐Voltage‐Switching

IET Power Electronics
In this paper, a high step‐up DC‐DC converter is presented. The input current ripple is reduced by adding the interleaving technique on the input side.
Marzieh Mohammadi Jouzdani, Omid Haghparast Naeini, Mahdi Shaneh, Tohid Nouri   +3 more
doaj   +1 more source

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

The 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, Stephen Finney, Derrick Holliday   +2 more
doaj   +1 more source

Refinement of amino‐acid conformation vs. difference density maps in time‐resolved serial femtosecond crystallography data analysis

FEBS Open Bio, EarlyView.
The dFoCC pipeline starts with observed DED and resting‐state coordinates, which are then used to generate a library of triggered states. Correlation analysis of the calculated DED features of each candidate vs observed DED permits quantitative evaluation of candidate structural quality.
Meng Iao Fong, Yuhei Hosokawa, Lars Oliver Essen, Manuel Maestre‐Reyna   +3 more
wiley   +1 more source

DAB unified ZVS control strategy with optimal current stress in full power range under TPS control

IET Power Electronics
Current stress and soft switching range are important performance indexes of dual active bridge DC–DC converter. Based on three‐phase shift control, Karush–Kuhn–Tucker (KKT) algorithm is used to solve the optimal control strategy of current stress under ...
Shuai Cheng, Fusheng Wang, Zongfeng Han, Chuanqi Zhang   +3 more
doaj   +1 more source