Results 31 to 40 of about 1,644 (207)
NTU "KhPI" Bulletin: Power and heat engineering processes and equipment, 2023 In the presented scientific work, the basic design versions of the thrust bearings of Hydrogenerators are considered. The main causes of emergencies in the thrust bearing unit of a high-power Hydrogenerator are considered. The main requirements for the operation of thrust bearings are submitted.
openaire +3 more sources
Праці Інституту електродинаміки Національної академії наук України, 2021 The paper presents results of analysis of the influence of the thickness of the dielectric substrate of a capacitive beating sensor, the electrodes of which are made of foil dielectric type FR4, on the transformation function of the sensor by methods of ...
В.О. Березниченко +1 more
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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
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
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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
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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
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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
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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
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