Results 21 to 30 of about 394,809 (281)

Synthesis and process optimization of electrospun PEEK-sulfonated nanofibers by response surface methodology [PDF]

open access: yes, 2015
In this study electrospun nanofibers of partially sulfonated polyether ether ketone have been produced as a preliminary step for a possible development of composite proton exchange membranes for fuel cells.
Boaretti, Carlo   +3 more
core   +2 more sources

NEW APPROACHES FOR VERY SHORT-TERM STEADY-STATE ANALYSIS OF AN ELECTRICAL DISTRIBUTION SYSTEM WITH WIND FARMS [PDF]

open access: yes, 2010
Distribution networks are undergoing radical changes due to the high level of penetration of dispersed generation. Dispersed generation systems require particular attention due to their incorporation of uncertain energy sources, such as wind farms, and ...
Angela Russo   +9 more
core   +2 more sources

Kinetic Modeling and Numerical Simulation as Tools to Scale Microalgae Cell Membrane Permeabilization by Means of Pulsed Electric Fields (PEF) From Lab to Pilot Plants [PDF]

open access: yes, 2020
Pulsed Electric Fields (PEF) is a promising technology for the gentle and energy efficient disruption of microalgae cells such as Chlorella vulgaris.
Knappert, Justus   +2 more
core   +1 more source

Reactive Power Compensation with PV Inverters for System Loss Reduction

open access: yesEnergies, 2019
Photovoltaic (PV) system inverters usually operate at unitary power factor, injecting only active power into the system. Recently, many studies have been done analyzing potential benefits of reactive power provisioning, such as voltage regulation ...
Saša Vlahinić   +3 more
doaj   +1 more source

Distribution System State Estimation in the Presence of High Solar Penetration

open access: yes, 2019
Low-to-medium voltage distribution networks are experiencing rising levels of distributed energy resources, including renewable generation, along with improved sensing, communication, and automation infrastructure.
Kundu, Soumya   +4 more
core   +1 more source

A DCM-Based Non-Isolated Step-Down DC Transformer

open access: yesEnergies
DC transformers have emerged as essential devices for medium voltage DC (MVDC)-low voltage DC (LVDC) distribution systems. However, conventional step-down single-level converters have limits on the voltage level of the MVDC-LVDC distribution system. This
Minseung Kim   +2 more
doaj   +1 more source

Multiobjective Approach for Medium- and Low-Voltage Planning of Power Distribution Systems Considering Renewable Energy and Robustness

open access: yesEnergies, 2020
In this paper, a multiobjective approach to carry out the planning of medium-voltage (MV) and low-voltage (LV) distribution systems, considering renewable energy sources (RES) and robustness, is proposed.
Diogo Rupolo   +3 more
doaj   +1 more source

Industrial Fieldbus Improvements in Power Distribution and Conducted Noise Immunity With No Extra Costs [PDF]

open access: yes, 2011
Industrial distributed control continues the move toward networks at all levels. At lower levels, control networks provide flexibility, reliability, and low cost, although perhaps the simplest but most important advantage is the reduced volume of ...
Barbancho Concejero, Antonio   +3 more
core   +1 more source

Distribution Network Model Platform: A First Case Study

open access: yesEnergies, 2019
Decarbonisation policies have recently seen an uncontrolled increase in local electricity production from renewable energy sources (RES) at distribution level.
Mirna Grzanic   +2 more
doaj   +1 more source

Long-Term Monitoring of Flicker and Some Other Parameters of Voltage Quality

open access: yesTransactions on Environment and Electrical Engineering, 2016
In 1997 cooperation began between the Faculty of Electrical Engineering and Computer Science and the power  company CEZ on a joint project that involved monitoring selected voltage quality parameters.
Petr Krejci   +3 more
doaj   +1 more source

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