Results 81 to 90 of about 550 (166)

The research of the thermal state of the umbrella type hydrogenerator by САЕ methods [PDF]

open access: yes, 2019
В представленной работе рассмотрено исследование теплового состояния гидрогенератора зонтичного типа мощностью 60 МВт. Показана возможность определения граничных условий 3 рода, необходимых для определения термонапряженного состояния деталей и узлов ...
Коврига, Антон Евгеньевич   +3 more
core   +1 more source

Characteristics of On-line Partial Discharge on Hydrogenerator by Hybrid Detection using Acoustic and Electrical Measurement Methods [PDF]

open access: yes
Establishment of condition based maintenance for hydrogenerator is very im portant for monitoring the insulation of stator windings. The partial discharge testing is a promising method of condition monitoring of hydrogenerator stator winding insulation ...
オオツボ, マサヒサ   +52 more
core  

Tribotechnical Diagnostics of Aircraft Emergency Hydrogenerator NP-27 T

open access: yesApplied Sciences
Aircraft emergency hydraulic pumps are safety-critical units whose intermittent operation complicates condition assessment and reduces the diagnostic value of conventional bulk physicochemical oil properties.
Aurel Sloboda   +6 more
doaj   +1 more source

Design and Research of Thrust Bearing for Datengxia Hydro-generator

open access: yesRenmin Zhujiang, 2022
The design of thrust bearing of Datengxia hydro generator and the improvement measures of cooling system are introduced. The design of thrust bearing of large hydro generator focuses on the support structure, parameters and cooling method.
GE Liangcheng   +4 more
doaj  

Безконтактне діагностування ротора працюючого гідрогенератора [PDF]

open access: yes, 2022
Запропоновано підхід який дасть можливість на працюючому гідрогенераторі під час вимірювання теплового портрета ротора гідрогенератора визначати положення його ротора, що дозволяє оперативно визначати місця прогнозованого перегріву або пошкодження ...
Грабко, В. В.   +1 more
core  

Pendulum-Based River Current Energy Converter for Hydrometric Monitoring Systems. [PDF]

open access: yesSensors (Basel), 2022
Naifar S   +6 more
europepmc   +1 more source

Analysis of vibration performance of combined long columns based on characteristic frequencies of hydrogenerator

open access: yesShuili Shuiyun Gongcheng Xuebao, 2018
In order to improve the usability and seismic performance of the structures in hydropower station, taking the characteristic frequency of the hydrogenerator as the key parameter index, the modal analysis and resonance check of 4 models including ...
HU Shaowei   +3 more
doaj   +1 more source

Experimental Estimation of Journal Bearing Stiffness for Damage Detection in Large Hydrogenerators

open access: yesShock and Vibration, 2017
Based on experimental pieces of evidence collected in a set of twenty healthy large hydrogenerators, this article shows that the operating conditions of the tilting pad journal bearings of these machines may have unpredictable and significant changes ...
Geraldo Carvalho Brito   +2 more
doaj   +1 more source

Spectral Attribution of Electromagnetically Induced Stator Vibration in a Hydro-Generator

open access: yesEnergies
Electromagnetic force is an important excitation source of stator-core vibration in hydro-generators. The methodological novelty of this study lies in an order-specific spectral-attribution framework for electromagnetically induced stator vibration ...
Kun Yang   +6 more
doaj   +1 more source

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