Results 11 to 20 of about 165,615 (260)
Influencing Factors on the Fluting in an Axial Ball Bearing at DC Bearing Currents
Lubricants, 2023 The effect of variable DC bearing current amplitude, bearing current polarity, mechanical force, rotation speed, bearing temperature, and number of the balls on the fluting in an axial ball bearing type 51208 is investigated under DC currents.
Omid Safdarzadeh +4 more
doaj +3 more sources
EnergiesThe present paper deals with a review on bearing currents in electrical machines, with major emphasis on mechanisms, impacts, and mitigation strategies.
Tianyi Pei +3 more
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New Modulation Technique to Mitigate Common Mode Voltage Effects in Star-Connected Five-Phase AC Drives [PDF]
, 2020 Star-connected multiphase AC drives are being considered for electromovility applications such as electromechanical actuators (EMA), where high power density and fault tolerance is demanded.
Fernandez, Markel +5 more
core +2 more sources
Design and Unbiased Control of Nine-Pole Radial Magnetic Bearing
Actuators, 2023 Typical radial active magnetic bearings are structurally symmetric. For example, an eight-pole bearing uses two opposing pairs to control one axis by winding the pair in series.
Myounggyu D. Noh, Wonjin Jeong
doaj +1 more source
Lubricants, 2023 The reason for the failure of electric vehicle drives is increasingly current-induced damage to rolling bearings. Studies show that rolling bearings are more susceptible to current pass-through after the first occurrence of unwanted bearing currents.
Steffen Puchtler +3 more
doaj +1 more source
Novel Bearing Current Suppression Approach in Doubly-Fed Induction Generators
IEEE Access, 2019 Doubly-fed induction generators (DFIGs) are widely used in the wind power generation systems. However, due to the use of the power electronic devices, such as insulated gate bipolar transistor (IGBT), it is inevitable to generate a non-zero common mode ...
Ruifang Liu +3 more
doaj +1 more source
Acoustic positioning and tracking in Portsmouth Harbour, New Hampshire [PDF]
, 2007 Portsmouth Harbor, New Hampshire, is frequently used as a testing area for multibeam and sidescan sonars, and is the location of numerous ground-truthing studies. Having the ability to accurately position underwater sensors is an important aspect of this
Huff, Lloyd C +5 more
core +2 more sources
Energies, 2022 Pulse-width modulation (PWM) inverter drive systems are widely applied in industry for their great speed-control characteristics and performance. However, the common-mode voltage of the inverter induces motor bearing voltage and bearing current, which ...
Lei Yang +5 more
doaj +1 more source
Superconducting Bearing Design for Outer Rotor Flywheel Using Lumped Parameter Techniques [PDF]
, 2014 This paper describes the application of lumped parameter modeling techniques to designing high temperature superconducting bearings for outer-rotor flywheel energy storage systems.
Chen, D, Longoria, R. G. +2 more
core +1 more source
Wave Profile for Anti-force Waves with Maximum Possible Currents [PDF]
, 2015 In the theoretical investigation of the electrical breakdown of a gas, we apply a one-dimensional, steady state, constant velocity, three component fluid model and consider the electrons to be the main element in propagation of the wave. The electron gas
Childs, W. P. +3 more
core +3 more sources