Results 21 to 30 of about 1,887,401 (270)
Sensorless MRAS control of emerging doubly‐fed reluctance wind generators
IET Renewable Power Generation, 2021 A new model reference adaptive system based estimation technique for vector control of real and reactive power of a brushless doubly fed reluctance generator without a shaft position sensor is proposed.
Mohammad‐Reza Agha‐Kashkooli +1 more
doaj +1 more source
Brainless Walking: Animal Gaits Emerge From an Actuator Characteristic
Frontiers in Robotics and AI, 2021 In this study, we discovered a phenomenon in which a quadruped robot without any sensors or microprocessor can autonomously generate the various gait patterns of animals using actuator characteristics and select the gaits according to the speed.
Yoichi Masuda +3 more
doaj +1 more source
International Journal of Mechanical System Dynamics, 2021 This study aims to show an approach for the dynamic simulation of a synchronous machine. The magnetic forces in the air gap are calculated efficiently using simplified approaches without neglecting important effects.
Florian Bechler +5 more
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source
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
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
Exploiting metabolic adaptations to overcome dabrafenib treatment resistance in melanoma cells
Molecular Oncology, EarlyView.We show that dabrafenib‐resistant melanoma cells undergo mitochondrial remodeling, leading to elevated respiration and ROS production balanced by stronger antioxidant defenses. This altered redox state promotes survival despite mitochondrial damage but renders resistant cells highly vulnerable to ROS‐inducing compounds such as PEITC, highlighting redox
Silvia Eller +17 more
wiley +1 more source