Results 21 to 30 of about 35,036 (317)

Dynamic effects of fault modeling on stair-step and corner-point grids

open access: yesJournal of Petroleum Exploration and Production Technology, 2021
Fault modeling has become an integral element of reservoir simulation for structurally complex reservoirs. Modeling of faults in general has major implications for the simulation grid.
Faruk O. Alpak, Tianhong Chen
doaj   +1 more source

Eccentricity Fault Modeling and Diagnosing of PMSM Using the Magnetic Equivalent Circuit Model [PDF]

open access: yesIranian Journal of Electrical and Electronic Engineering, 2023
This paper introduces the modeling and fault diagnosis of rotor eccentricities of permanent magnetic synchronous machine (PMSM). The modeling of machine in healthy and fault condition have been proposed based on magnetic equivalent circuit (MEC ...
V. Naeini, M. moomeni
doaj  

An Abnormal Data Processing Method Based on An Ensemble Algorithm for Early Warning of Wind Turbine Failure

open access: yesIEEE Access, 2021
In the modeling process of fault warning models, modeling data plays an important role, the quality of which affects the performance of the model. The manual selection of modeling data according to fault records is time-consuming and makes it difficult ...
Qiang Zhao   +4 more
doaj   +1 more source

A change-detection algorithm for short-circuit fault detection in closed-loop AC drives [PDF]

open access: yes, 2013
This paper deals with an on-line method for turn-to-turn short-circuit fault detection in low-voltage permanent-magnet synchronous machine drives. Due to the closed-loop control, the fault effects are reflected in the voltage.
Johan Gyselinck   +10 more
core   +1 more source

Design and assessment of a multiple sensor fault tolerant robust control system [PDF]

open access: yes, 2008
This paper presents an enhanced robust control design structure to realise fault tolerance towards sensor faults suitable for multi-input-multi-output (MIMO) systems implementation.
Chen, J   +5 more
core   +1 more source

Modeling of Continental Normal Fault Earthquakes

open access: yesGeochemistry, Geophysics, Geosystems, 2022
The magnitude of earthquakes on continental normal faults rarely exceeds 7.0 Mw. However, because of their vicinity to large population centers they can be highly destructive.
Iskander A. Muldashev   +2 more
doaj   +1 more source

A Coordinated Restoration Scheduling Strategy for Distribution Network Sources Under Typhoon Weather Considering Correlation Effects

open access: yesApplied Sciences
To mitigate large-scale blackout risks in urban distribution systems under typhoon-induced extreme weather and to reduce post-disaster restoration costs, this study proposes a resilience-oriented spatiotemporal co-optimization framework integrating ...
Naixuan Zhu   +3 more
doaj   +1 more source

Faultanalysis of Short Circuit Between Pieces of Large Motor Stator Cores

open access: yesJournal of Harbin University of Science and Technology, 2020
In order to analyze the short circuit fault between the stator core pieces of large motors, the establishment of the fault model was studied. According to the homogenization theory, the shortcircuit fault model between iron cores is studied.
MENG Dawei, WANG Xiaohui
doaj   +1 more source

From model, signal to knowledge: a data-driven perspective of fault detection and diagnosis [PDF]

open access: yes, 2013
This review paper is to give a full picture of fault detection and diagnosis (FDD) in complex systems from the perspective of data processing. As a matter of fact, an FDD system is a data-processing system on the basis of information redundancy, in which
Dai, Xuewu, Gao, Zhiwei
core   +1 more source

Integrated 3D geological modeling of Sonda-Jherruck coal field, Pakistan

open access: yesJournal of Sustainable Mining, 2018
Despite being one of the largest coal fields in Pakistan, the Sonda-Jherruck coal resource is yet to be exploited. Exploration studies were done between 1981 and 1989 by the Geological Survey of Pakistan (GSP) and the United States Geological Survey ...
Izhar Mithal Jiskani   +2 more
doaj   +1 more source

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