Results 21 to 30 of about 108,139 (315)

Study on the properties of MgO-Fe-C bricks as the linings of vanadium-extraction converters

工程科学学报, 2016
To extend the service life of MgO-C bricks which used as the linings of vanadium-extraction converters, MgO-Fe-C bricks were fabricated in this study. The service properties of this novel refractory were comparatively investigated between traditional MgO-
LIU Lei, SUN Wen-jie, ZHANG Ling-xi, LI Xue-hui   +3 more
doaj   +1 more source

Metal-Supported Solid Oxide Fuel Cells with Exceptionally High Power Density for Range Extender Systems

Cell Reports Physical Science, 2020
Summary: Solid oxide fuel cells (SOFCs) exhibit potential to become a key technology for future clean energy systems. The metal-supported SOFC exhibits decisive strengths like fast start-up capability, mechanical robustness, and acceptable cost, making ...
David Udomsilp, Jürgen Rechberger, Raphael Neubauer, Cornelia Bischof, Florian Thaler, Wolfgang Schafbauer, Norbert H. Menzler, Lambertus G.J. de Haart, Andreas Nenning, Alexander K. Opitz, Olivier Guillon, Martin Bram   +11 more
doaj   +1 more source

PLL-Free Voltage Oriented Control Strategy for Voltage Source Converters Tied to Unbalanced Utility Grids

Frontiers in Energy Research, 2022
Asymmetrical working conditions of the utility grid introduce the large-amplitude negative-sequence component to the output current of the voltage source converter (VSC), causing power semiconductor devices to suffer from thermal fatigue and thermal ...
Liansong Xiong, Liansong Xiong, Binbing Wu, Binbing Wu, Xiaokang Liu, Liancheng Xiu, Liancheng Xiu, Dongjie Wang, Dongjie Wang   +8 more
doaj   +1 more source

THE ROTARY CONVERTER [PDF]

Science, 1899
n ...
openaire   +1 more source

Modelling approaches for DC-DC converters with switched capacitors

, 2015
In this paper we review relevant problems in the modelling of DC-DC converters with switched capacitors. We study several approaches that overcome the exposed modelling difficulties, addressing ideal and nonideal cases and using dynamic equations that ...
Rapisarda, P., Rosas Caro, J.C., Mayo Maldonado, J.C.   +2 more
core   +1 more source

Supercapacitor assisted LDO (SCALDO) techniquean extra low frequency design approach to high efficiency DC-DC converters and how it compares with the classical switched capacitor converters

, 2013
Supercapacitor assisted low dropout regulators (SCALDO) were proposed as an alternative design approach to DC-DC converters, where the supercapacitor circulation frequency (switching frequency) is in the order of few Hz to few 10s of Hz, with an output ...
Nihal Kulatana, Kankanamge, Kosala, Kularatna, Nihal, Kosala Kankanmage, Kulatana, Nihal, Kankanmage, Kosala   +5 more
core   +1 more source

Gradient System Modelling of Matrix Converters with Input and Output Filters [PDF]

, 2003
Due to its complexity, the dynamics of matrix converters are usually neglected in controller design. However, increasing demands on reduced harmonic generation and higher bandwidths makes it necessary to study large-signal dynamics. A unified methodology
Scherpen, Jacquelien M.A.,, Jeltsema, Dimitri,, Jeltsema, Dimitri, Scherpen, Jacquelien M.A., Klaassens, J. Ben, Klaassens, J. Ben,   +5 more
core  

Optimal control and robust estimation for ocean wave energy converters [PDF]

, 2013
This thesis deals with the optimal control of wave energy converters and some associated observer design problems. The first part of the thesis will investigate model predictive control of an ocean wave energy converter to maximize extracted power.
Abraham, Edo
core   +1 more source

Effects of the Fluid Replacement Method During Online Hemodiafiltration on the Solute Removal Performance and Biocompatibility Using the Asymmetric Cellulose Triacetate Membrane

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Pre‐dilution online hemodiafiltration (Pre‐HDF) is predominantly used in Japan, whereas post‐dilution online HDF (Post‐HDF) is more common in Europe. An asymmetric cellulose triacetate (ATA) membrane may improve biocompatibility.
Kenji Sakurai, Yoshitaka Kurihara, Fumi Yamauchi, Hiromi Hosoya, Takeshi Saito   +4 more
wiley   +1 more source

Low Voltage PV Interface to a High Voltage Input Source with Modified RVMR

Advances in Electrical and Computer Engineering, 2022
In this work PV fed Modified Resonant Voltage Multiplier Rectifier (RVMR) has been proposed for the hybrid renewable energy system. PV source energy is maximized in the modified RVMR scheme by applying the perturb and observe (P&O) based MPPT method ...
RAMASAMY, S., PALANIVEL, D., MANOHARAN, P. S.   +2 more
doaj   +1 more source