Results 41 to 50 of about 243,264 (167)

Mathematical modelling of rolling element bearings fault for the diagnosis in the gearbox-induction machine [PDF]

open access: yes, 2020
Inner race fault in bearing suspension is relatively the common fault in induction motors coupled with a gearbox, their detection is feasible by vibration monitoring of characteristic bearing frequencies.
Djamel Benazouz, Azeddine Ratni
core   +1 more source

Driven Primary Regulation for Minimum Power Losses Operation in Islanded Microgrids

open access: yesEnergies, 2018
The paper proposes an improved primary regulation method for inverter-interfaced generating units in islanded microgrids. The considered approach employs an off-line minimum losses optimal power flow (OPF) to devise the primary frequency regulation curve&
Quynh T.T Tran   +4 more
doaj   +1 more source

Comparison of Statistical Production Models for a Solar and a Wind Power Plant

open access: yesMathematics, 2023
Mathematical models to characterize and forecast the power production of photovoltaic and eolian plants are justified by the benefits of these sustainable energies, the increased usage in recent years, and the necessity to be integrated into the general ...
Irina Meghea
doaj   +1 more source

Differentiating between Underwater Construction Noise of Monopile and Jacket Foundations for Offshore Windmills: A Case Study from the Belgian Part of the North Sea

open access: yesThe Scientific World Journal, 2013
Steel monopiles, jackets requiring four steel pinpiles, and gravity-based foundations were applied in offshore wind farms in the Belgian part of the North Sea.
Alain Michel Jules Norro   +2 more
doaj   +1 more source

Real-Time Minimization Power Losses by Driven Primary Regulation in Islanded Microgrids

open access: yesEnergies, 2020
Islanded microgrids are small networks that work independently from the main grid. The frequency and voltage in islanded microgrids are affected directly by the output power of distributed generators and power demand variations. In this work, a real-time
Quynh T.T Tran   +5 more
doaj   +1 more source

From Symmetric Functions to Partition Identities

open access: yesAxioms, 2023
In this paper, we show that some classical results from q-analysis and partition theory are specializations of the fundamental relationships between complete and elementary symmetric functions.
Mircea Merca
doaj   +1 more source

New Trends in Parameter Identification for Mathematical Models

open access: yes, 2018
The Proceedings volume contains 16 contributions to the IMPA conference “New Trends in Parameter Identification for Mathematical Models”, Rio de Janeiro, Oct 30 – Nov 3, 2017, integrating the “Chemnitz Symposium on Inverse Problems on Tour”.

core   +1 more source

On the Distribution of Lightning Current among Interconnected Grounding Systems in Medium Voltage Grids

open access: yesEnergies, 2018
This paper presents the results of a first investigation on the effects of lightning stroke on medium voltage installations’ grounding systems, interconnected with the metal shields of the Medium Voltage (MV) distribution grid cables or with bare buried ...
Guido Ala   +4 more
doaj   +1 more source

The methodology for active testing of electronic devices under the radiations [PDF]

open access: yesNuclear Technology and Radiation Protection, 2018
The methodology, developed for active testing of electronic devices under the radiations, is presented. The test set-up includes a gamma-ray facility, the hardware board/fixtures and the software tools purposely designed and realized.
Parlato Aldo   +3 more
doaj   +1 more source

Application of a Variant of Mountain Pass Theorem in Modeling Real Phenomena

open access: yesMathematics, 2022
Mountain Pass Theorem (MPT) is an important result in variational methods with multiple applications in partial differential equations involved in mathematical physics. Starting from a variant of MPT, a new result concerning the existence of the solution
Irina Meghea
doaj   +1 more source

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