Results 11 to 20 of about 28,286 (284)

Pre-swirl mechanism in front of a centrifugal compressor: effects on surge line and on unsteady phenomena in surge area

open access: yesMATEC Web of Conferences, 2017
Using a pre-swirl mechanism upstream an impeller of a compressor allows to modify its characteristics curve, while weakly damaging its efficiency. Another consequence of the pre-swirl is to push back the surge line limit and to increase the operation ...
Danlos Amélie   +2 more
doaj   +4 more sources

An Improved Marine Predators Algorithm-Tuned Fractional-Order PID Controller for Automatic Voltage Regulator System [PDF]

open access: yesFractal and Fractional, 2023
One of the most popular controllers for the automatic voltage regulator (AVR) in maintaining the voltage level of a synchronous generator is the fractional-order proportional–integral-derivative (FOPID) controller.
Mohd Zaidi Mohd Tumari   +3 more
doaj   +3 more sources

Simulation and Study of Power Quality Issues in a Fixed Speed Wind Farm Substation

open access: yesThe Scientific World Journal, 2015
Power quality issues associated with the fixed speed wind farm substation located at Coimbatore district are investigated as the wind generators are tripping frequently.
T. Magesh, C. Chellamuthu
doaj   +2 more sources

Frequency prediction of a post-disturbance power system using a hybrid ARIMA and DBN model

open access: yesFrontiers in Energy Research
The online prediction of power system dynamic frequency helps to guide the choice of control measures quickly and accurately after a disturbance, and this then ensures the reliable and stable operations of a power system.
Huimin Wang   +3 more
doaj   +2 more sources

Optimization of distribution network scheduling based on BA and photovoltaic uncertainty

open access: yesNonlinear Engineering
A novel optimization framework for microgrid (MG) distribution network scheduling has been proposed, which integrates enhanced bat algorithm (BA) with probabilistic photovoltaic (PV) power prediction to address the dual challenges of renewable energy ...
Pan Lianrong   +4 more
doaj   +2 more sources

Analysis of energy characteristics of a transistor pulse generator in the process of electric spark dispersion of current-conductive granular media

open access: yesElectrical engineering & Electromechanics
Introduction. Studies of electrophysical and technological aspects of electric discharge in reaction chambers with granular metal loading to obtain its highly dispersed states have been conducted for many decades, however, the power sources of electric ...
O. I. Khrysto
doaj   +2 more sources

Long-range distributed vibration sensing based on internal-modulation OFDR

open access: yesNanotechnology and Precision Engineering
Presented here is long-range distributed vibration sensing based on internal-modulation optical frequency domain reflectometry (OFDR). In the proposed system with internal modulation, a silicon-based photonic-chip laser is used as the laser source, and ...
Yaoli Yue   +5 more
doaj   +2 more sources

Sensor-Based PUF:A Lightweight Random Number Generator for Resource Constrained IoT Devices [PDF]

open access: yes, 2022
Internet of Things (IoT) prevalence is surging swiftly over the past years, and by 2050, the number of IoT devices are expected to exceed 50 billion.
Hillerström, Maaike   +4 more
core   +1 more source

Elliptic Curve Pseudorandom Bit Generator with Maximum Period Sequences

open access: yes, 2021
Pseudo-random number generator is an important mechanism for cryptographic information protection. It can be used independently to generate special data or as the most important element of security of other mechanisms for cryptographic information ...
Gorbenko Y. I.   +4 more
core   +1 more source

Critical slowing down close to a global bifurcation of a curve of quasi-neutral equilibria [PDF]

open access: yes, 2022
Critical slowing down arises close to bifurcations and involves long transients. Despite slowing down phenomena have been widely studied in local bifurcations i.e., bifurcations of equilibrium points, less is known about transient delay phenomena close
Fontich, Ernest   +8 more
core   +1 more source

Home - About - Disclaimer - Privacy