Results 21 to 30 of about 550 (166)
Journal of Electrical and Computer Engineering, Volume 2023, Issue 1, 2023., 2023 This paper addresses the synchronization and operation of a 140 kVA inverter system connected to the main grid as part of a decentralized microgeneration system. The considerations for the supply of electrical energy stored in battery banks, mostly of photovoltaic origin, involve a study of the details of a rigid nonlinear system, which parallels the ...
Jesús Rodríguez-Flores +5 more
wiley +1 more source
Axial Vibration Analysis of Thrust Support of Vertical Hydrogenerator Unit [PDF]
E3S Web of Conferences, 2021 Axial vibration is the main accident that affects the normal function of the vertical hydro-generator unit and endangers the use of the unit. There are many reasons for the axial vibration of the unit.
Long Yuanlin, Ye Yuping
doaj +1 more source
International Journal of Photoenergy, Volume 2022, Issue 1, 2022., 2022 To address the problems of wind and solar generation volatility and lose of wind and photovoltaic resources, on the basis of the complementary property of wind‐solar‐water, the topology structure of the wind‐solar‐water synergy power generation system is constructed. Taking the minimum grid fluctuation index, the minimum wind‐photovoltaic‐hydro discard
Guo Zhao +5 more
wiley +1 more source
Detection of shorted turns on rotor poles in hydrogenerators using artificial neural networks [PDF]
Zbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2014 Early diagnosis of faults that might occur in industrial processes makes it possible to perform important preventative actions and therefore avoid the heavy economic losses involved in production stoppages and the replacement of elements and parts.
Babić Blagoje +4 more
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Journal of Electrical and Computer Engineering, Volume 2022, Issue 1, 2022., 2022 The performance of voltage stability indices in the multiobjective optimal power flow of modern power systems is presented in this work. Six indices: the Voltage Collapse Proximity Index (VCPI), Line Voltage Stability Index (LVSI), Line Stability Index (Lmn), Fast Voltage Stability Index (FVSI), Line Stability Factor (LQP), and Novel Line Stability ...
Rebeccah Kyomugisha +3 more
wiley +1 more source
IET Electric Power Applications, Volume 15, Issue 11, Page 1529-1546, November 2021., 2021 Abstract In this study, the rotor loss as well as the temperature variations due to the static air‐gap eccentricity (SAGE) and the rotor inter‐turn short circuit (RISC) in synchronous generators is presented. Different from the previous studies, this study investigates the loss/temperature changes under not only the single SAGE fault and the single ...
Yu‐Ling He +8 more
wiley +1 more source
Synchronous machine performance under geomagnetic disturbances
High Voltage, Volume 6, Issue 5, Page 894-903, October 2021., 2021 Abstract Geomagnetic disturbances (GMDs) are known to disturb power system equipment performance. The danger is associated with geomagnetically induced currents (GICs) occurring at the Earth's surface during GMD. GICs do not endanger power system operation conditions by themselves.
Ilja Boguslawsky +3 more
wiley +1 more source
Mathematical Problems in Engineering, Volume 2021, Issue 1, 2021., 2021 This paper proposed a new hybrid diagnosis method for the generator’s 3D static eccentricity faults which include the axial eccentricity, the radial eccentricity, and the mixed eccentricity composed of the former two. Firstly, adaptive local iterative filtering (ALIF) method was used to decompose the vibration signals of the generator under ...
Chao Zhang +7 more
wiley +1 more source
Efficiency Mapping and Weighted Average Efficiency for Large Hydrogenerators
IEEE Open Journal of Industry Applications, 2021 This paper presents the concept of efficiency mapping for large synchronous hydrogenerators, which are useful for evaluating hydropower generation performance vis-à-vis interconnected intermittent generation to machine efficiency-oriented design ...
Edson da Costa Bortoni +4 more
doaj +1 more source
Shock and Vibration, Volume 2021, Issue 1, 2021., 2021 Aiming at the problem that it is difficult to extract the characteristics of the draft tube pressure fluctuation signal under the background of strong noise, this study proposes a dual noise reduction method based on adaptive local iterative filtering (ALIF) and singular value decomposition (SVD).
Yan Ren +8 more
wiley +1 more source