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Suppression of common-mode voltage in a PWM rectifier/inverter system [PDF]
, 2001 This paper proposes a PWM rectifier/inverter system capable of suppressing not only supply harmonic currents but also electromagnetic interference (EMI).
S. Ogasawara +3 more
core +1 more source
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
Energies, 2019 Wind energy integration in power grids is increasing day by day to reduce the use of fossil fuels, and consequently greenhouse gas emissions. Using the pulse-width modulated (PWM) power converters in wind turbine generators, specifically in doubly-fed ...
Amr. S. Zalhaf +2 more
doaj +1 more source
Electrical Bearing Damage, A Problem in the Nano- and Macro-Range
Lubricants, 2022 Rolling bearings face different damaging effects: Besides mechanical effects, current-induced bearing damage occurs in electrical drive systems. Therefore, it is of increasing interest to understand the differences leading to known electrical damage ...
Volker Schneider +9 more
doaj +1 more source
Overview of Bearing White Etching Cracks due to Electrical Currents
, 2021 International audienceWith the development of variable speed drives, motor bearings are submitted to additional stress due to parasitic currents which deteriorate bearing raceways, rolling elements and lubricant.
Boileau, Thierry +3 more
core +1 more source
Patterns of deposition from experimental turbidity currents with reversing buoyancy [PDF]
, 2010 Turbidity currents are turbulent, sediment-laden gravity currents which can be generated in relatively shallow shelf settings and travel downslope before spreading out across deep-water abyssal plains.
Pritchard, David +2 more
core +1 more source
Active Magnetic Bearing Design Optimization and Transient-State Analysis Using ANSYS [PDF]
Engineering and Technology Journal, 2010 This paper presents design optimization, and transient-state analysis ofactive magnetic bearings (AMB) using the powerful ANSYS software package.ANSYS software provides the required environment for numerical modeling andanalysis based on the finite ...
Adil H. Ahmed, Thamir M. Abdul Wahab
doaj +1 more source
IEEE AccessMain shaft bearing failures in wind turbines have drawn increasing attention due to their high maintenance costs and operational risks. While previous studies have primarily focused on mechanical causes or bearing currents induced by generator-side ...
Jian Zhao +4 more
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Electrical bearing failures in electric vehicles
Friction, 2020 In modern electric equipment, especially electric vehicles, inverter control systems can lead to complex shaft voltages and bearing currents. Within an electric motor, many parts have electrical failure problems, and among which bearings are the most ...
Feng He, Guoxin Xie, Jianbin Luo
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Adélie penguin foraging location predicted by tidal regime switching. [PDF]
PLoS ONE, 2013 Penguin foraging and breeding success depend on broad-scale environmental and local-scale hydrographic features of their habitat. We investigated the effect of local tidal currents on a population of Adélie penguins on Humble Is., Antarctica.
Matthew J Oliver +6 more
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