Results 71 to 80 of about 1,744 (183)

Influence of stator and rotor core material definition method on no‐load electromagnetic field calculation results for tubular hydrogenerator

Electronics Letters, Volume 60, Issue 6, March 2024.
The findings reveal that in the no‐load electromagnetic field calculation of tubular hydrogenerator, while a linear simplified definition method for the stator core material maintains high accuracy and efficiency, but the same approach for the rotor core material is unacceptable.
Jia‐xin Man, Zhi‐ting Zhou, Zhen‐nan Fan   +2 more
wiley   +1 more source

IDENTIFICATION OF TECHNOLOGICAL DEFECTS IN HIGH-VOLTAGE SOLID INSULATION OF ELECTRICAL INSULATION STRUCTURES ON THE CHARACTERISTICS OF PARTIAL DISCHARGES

Electrical engineering & Electromechanics, 2019
Introduction. High-voltage insulation systems always have some background level of the partial discharges, which does not have any significant effect on the life of the electrical insulation design.
G. V. Bezprozvannych, A. G. Kyessayev, I. A. Mirchuk, A. V. Roginskiy   +3 more
doaj   +1 more source

Joint Ventures: Prospects, Problems and IIASA Participation [PDF]

, 1987
The Director General of the Soviet firm "Electrosila", Boris FOMIN, participated in several projects and events at IIASA. He was one of the key participants in the project on Innovation in Electro-Technology Industry.
Fomin, B.I.
core  

Consideraciones para un sistema de diagnóstico de aislamiento de grandes hidrogeneradores mediante DP; Considerations for Insulation Diagnostic System in Large Hydrogenerators by PD

Revista Científica de Ingeniería Energética, 2011
El presente trabajo aborda las fallas a monitorear, la selección de las variables y parámetros de estado dediagnóstico, el método de identificación de las fallas y el flujo de la información.Los resultados ...
Williamn J Torres Medina, Santiago A Dorrbercker Drake, Ivón O Benítez González   +2 more
doaj  

New method for experimental modal analysis of hydrogenerator's stator core using the excitation from the Poles

The Journal of Engineering, 2019
The study of stator core vibrations generated by electromagnetic forces in electrical machines is of great practical and theoretical interest. An important part of the problem is the correct determination of mode shapes and eigen frequencies of the ...
Allan de Barros, Alexandre D'Agostini, Thierre Zulzke Penteado, Norio Kato, André Alves Cunha, Egidio José Faria, Carlos Haluska, Fernando Hiroyuki Hamaji, Silvio Ikuyo Nabeta, Ivan Eduardo Chabu   +9 more
doaj   +1 more source

Ocean Wind Energy Technologies in Modern Electric Networks: Opportunity and Challenges [PDF]

, 2020
Wind energy is one of the most important sources of energy in the world. In recent decades, wind as one of the massive marine energy resources in the ocean to produce electricity has been used.
Abdel Aleem, Shady H.E., Ahmadi, Abdollah, Ardeshiri, Masoud, Berecibar, Maitane, Gandoman, Foad H., Mierlo, Joeri Van, Nezhad, Ali Esmaeel   +6 more
core   +2 more sources

Effects of Al/NiCr Coatings on the Current-Carrying Tribological Performance of Hydrogenerator Collector Rings [PDF]

Cailiao Baohu
In order to improve the surface condition of collector rings in hydrogenerators and to enhance the current-carrying characteristics and operational stability of the brush/ring tribo-pair，Al and NiCr coatings were deposited on the surface of 45 steel，a ...
ZHAO Xinze, LI Wanting, LI Chenshi, ZHU Yunlong, LI Yang, ZHAO Meiyun, XU Xiang, YANG Wei
doaj   +1 more source

Analysis and Comparison of Sensors for Measurements of Partial Discharges in Hydrogenerator Stator Windings

Journal of Microwaves, Optoelectronics and Electromagnetic Applications
In order to measure electrical signals produced by partial discharges in hydrogenerators stator windings, capacitive couplers are regularly used. They are electrically connected to the windings and therefore, require undesired insulation intrusion.
Victor Dmitriev, Rodrigo M. S. de Oliveira, Fernando S. Brasil, Paulo R. M. de Vilhena, Jonathas F. M. Modesto, Ronaldo F. Zampolo   +5 more
doaj   +1 more source

Power‐Over‐Fiber Applications for Telecommunications and for Electric Utilities [PDF]

, 2017
Beyond telecommunications, optical fibers can also transport optical energy to powering electric or electronic devices remotely. This technique is called power over fiber (PoF).
Rosolem, Joao Batista
core   +2 more sources

Dimensionality Reduction and Clustering Strategies for Label Propagation in Partial Discharge Data Sets

Energies
Deep learning approaches have been successfully applied to perform automatic classification of phase-resolved partial discharge (PRPD) diagrams. Under the supervised learning paradigm, however, the performance of classifiers strongly depends on the ...
Ronaldo F. Zampolo, Frederico H. R. Lopes, Rodrigo M. S. de Oliveira, Martim F. Fernandes, Victor Dmitriev   +4 more
doaj   +1 more source