Results 21 to 30 of about 166,407 (356)

Superconducting Bearing Design for Outer Rotor Flywheel Using Lumped Parameter Techniques [PDF]

open access: yes, 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]

open access: yes, 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

PM fractional machines adopting bonded magnets: effect of different magnetizations on the energetic performance [PDF]

open access: yes, 2012
The adoption of Permanent Magnets in small brushless machines for automotive applications is becoming frequent. Some research on bonded magnets is being carried on to substitute the ferrites.
Ferraris, Luca   +3 more
core   +1 more source

Electrical Bearing Damage, A Problem in the Nano- and Macro-Range

open access: yesLubricants, 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

Performance of common-mode chokes [PDF]

open access: yes, 2010
A low-cost method for experimental investigation of common-mode chokes for reducing high-frequency motor ground-currents of inverter-based drive systems of several hundred kW is presented.
Heng, Bee See, Muetze, Annette
core   +1 more source

An Active Common-Mode Voltage Canceler for PWM Converters in Wind-Turbine Doubly-Fed Induction Generators

open access: yesEnergies, 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

KCa3.1 inhibition switches the phenotype of glioma-infiltrating microglia/macrophages [PDF]

open access: yes, 2016
Among the strategies adopted by glioma to successfully invade the brain parenchyma is turning the infiltrating microglia/macrophages (M/MΦ) into allies, by shifting them toward an anti-inflammatory, pro-tumor phenotype.
Catalano, M   +11 more
core   +2 more sources

Active Magnetic Bearing Design Optimization and Transient-State Analysis Using ANSYS [PDF]

open access: yesEngineering 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

Comprehensive Review of Bearing Currents in Electrical Machines: Mechanisms, Impacts, and Mitigation Techniques

open access: yesEnergies
The 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
doaj   +1 more source

Modelling of the Bearing Breakdown Resistance in Bearing Currents Problem of AC Motors

open access: yesEnergies, 2019
With the wide application of pulse width modulation (PWM) technology in motor driving, the bearing current problem has become more and more severe. The most complicated problem in analyzing bearing currents is modeling the equivalent circuit of the ...
Xuejiao Ren, Ruifang Liu, Erle Yang
doaj   +1 more source

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