Results 31 to 40 of about 26,042 (328)
Research on the Accumulative Damage of Flywheels Due to In-Space Charging Effects
AerospaceHigh-speed rotating flywheel bearings, designed for space applications, generate a high-resistance hydrodynamic lubrication film, which isolates the rotor, transforming it into a conductor. This phenomenon introduces a novel failure mode—flywheel bearing
Dong Tian +6 more
doaj +1 more source
Elektrotehnìka ta Elektroenergetika, 2018 Purpose. Investigation of the influence of sharply variable electric load on non-stationary electromagnetic phenomena and electromechanical processes in a synchronous electric drive. Methodology.
V. V. Zinovkin +2 more
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Recent Progress in Electrically Conductive and Thermally Conductive Lubricants: A Critical Review
Lubricants, 2023 Electrically as well as thermally conductive lubricants have drawn considerable attention and are an emerging research topic because they have unique advantages and advanced lubrication performance over traditional lubricants such as corrosion protection
Bayazid Bustami +7 more
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Advanced Diagnostic Techniques for Earthing Brush Faults Detection in Large Turbine Generators
EnergiesLarge steam turbine generators are increasingly vulnerable to damage from shaft voltages and bearing currents due to the widespread adoption of modern power electronic excitation systems and more flexible operating regimes.
Katudi Oupa Mailula, Akshay Kumar Saha
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Erosion-corrosion Behaviour of Dual Phase Medium Carbon Steel using a Designed Slurry Pot [PDF]
Tribology in Industry, 2018 A slurry pot has been designed, fabricated and evaluated for erosion-corrosion investigations. A variable voltage controller was used to vary the input voltage into the one-horse-power motor that controls the slurry pot.
S. Aribo +6 more
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Voltage dip generator for testing wind turbines connected to electrical networks [PDF]
, 2011 This paper describes a new voltage dip generator that allows the shape of the time profile of the voltage generated to be configured. The use of this device as a tool to test the fault ride-through capability of wind turbines connected to the electricity
Abbesa +21 more
core +2 more sources
Experimental Study: Bearing Degradation Caused by Electrical Currents and Voltages at Low Speeds
LubricantsIn electric vehicles (EVs), bearings in traction motors are increasingly prone to electrical damage under operational currents and voltages, leading to accelerated wear and reduced lifespan.
Zifan Li, Ran Cai, Xueyuan Nie
doaj +1 more source
Frontiers in Energy Research, 2021 The chief aim of the proposed paper is to compare the behavior of supply voltage registered onboard three vessels equipped with high power converters during normal operation.
Tomasz Tarasiuk +5 more
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A Shaft Generator System without Output Voltage Distortion
IEEJ Transactions on Industry Applications, 1999 A shaft generator system, which consists of a shaft generator, a rectifier, an externally commutated thyristor inverter, an ac reactor, and a synchronous condenser, is being increasingly used mainly in large ships. Conventional type of the shaft generator system has a fundamental drawback of involving a large amount of harmonics in the output voltage ...
Shoji Nishikata +3 more
openaire +2 more sources
Twin-capacitive shaft angle encoder with analog output signal [PDF]
, 1977 A precision capacitive shaft encoder providing a dc signal corresponding to the angular position of a shaft is described. Two variable capacitances are coupled in tandem by a rotatable shaft.
Hruby, R. J., Wilson, R. L.
core +1 more source