Results 91 to 100 of about 35,795 (319)

Development of real and reactive power allocation methods for deregulated power system [PDF]

open access: yes, 2007
The aim of deregulation in the electric power industry is to optimize the system welfare, by introducing competitive environment, mainly among the suppliers.
Shareef, Hussain
core  

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

open access: yesAdvanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

open access: yesAdvanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

A Contribution to Reactive Power Control in Inverter Based Islanded Microgrids

open access: yes, 2022
In islanded Microgrids (MGs) with converter based energy production, one of the main problem dealing with the primary level regulation is the proper reactive power sharing among the Distributed Energy Resources(DERs.) and the simultaneous voltage ...
Alessandro Rosini   +4 more
core   +1 more source

Workflow for Design of Experiments‐Based Modeling of Species Transport and Growth Kinetics in GaN Hydride Vapor Phase Epitaxy

open access: yesAdvanced Engineering Materials, EarlyView.
A novel workflow for investigating hydride vapor phase epitaxy for GaN bulk crystal growth is proposed. It combines Design of experiments (DoE) with physical simulations of mass transport and crystal growth kinetics, serving as an intermediate step between DoE and experiments.
J. Tomkovič   +7 more
wiley   +1 more source

Secondary Voltage Control for Reactive Power Sharing in an Islanded Microgrid

open access: yesJournal of Power Electronics, 2016
Owing to mismatched feeder impedances in an islanded microgrid, the conventional droop control method typically results in errors in reactive power sharing among distributed generation (DG) units. In this study, an improved droop control strategy based on secondary voltage control is proposed to enhance the reactive power sharing accuracy in an ...
Qian Guo   +4 more
openaire   +2 more sources

Soft Mechanical‐Electrical Logic Using Liquid Metal‐Filled 3D‐Printed Architectures

open access: yesAdvanced Engineering Materials, EarlyView.
We present 3D‐printed soft mechanical–electrical logic elements that use liquid metal–filled silicone tubes actuated by thermoplastic polyurethane/polylactic acid (TPU/PLA) architectures to produce Boolean operations. Complementary normally open and normally closed unit cells perform repeatable binary transitions and can be combined into more complex ...
Christoph Lehmann   +2 more
wiley   +1 more source

Reactive power sharing in an islanded microgrid

open access: yes, 2010
For a coordinated integration of the increasing amount of distributed generators in the distribution network, the microgrid has been presented. For the islanded operating condition of the microgrid, the conventional approaches for grid control are no ...
Vandoorn, Tine   +4 more
core  

An Islanded Microgrid Reactive Power Sharing Control Strategy with Both Frequency and Magnitude Compensation Functions

open access: yes工程科学与技术
ObjectiveIn the microgrid under islanding mode, factors such as local load shedding or variations in line impedance cause differences in system equivalent impedance, which makes it challenging for parallel inverters using droop control to achieve ...
LAI Hui   +5 more
doaj  

Home - About - Disclaimer - Privacy