Results 51 to 60 of about 19,374 (297)

Determination of the rational shift value the center of the magnetic system electromagnetic bearing

open access: yesВестник Самарского государственного технического университета. Серия: Технические науки, 2023
The article sets the task of determining the rational value of the displacement of the center of the magnetic system of an electromagnetic bearing relative to the axis of rotation, at which, with equal currents in opposite electromagnets, the weight ...
Alexander V. Starikov   +1 more
doaj   +1 more source

Methodology to measure electric discharge machining (EDM) bearing currents in induction motors with supply from a variable speed drive (VSD) [PDF]

open access: yes, 2013
En este artículo se establece una metodología para la medición de corrientes de rodamiento del tipo “Electric Discharge Machining (EDM)” en motores de inducción alimentados por variador de velocidad (VSD- Drive). Este artículo hace una introducción a los
Quintero Sarmiento, David Raúl   +2 more
core  

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

open access: yesFEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe   +3 more
wiley   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

Improved design and analysis of a radial magnetic bearing with paired‐pole or alternating‐pole configurations

open access: yesIET Electric Power Applications, 2022
The magnetic saturation of iron‐core will reduce the maximum output force, influence the linear force characteristic and control precision of the magnetic bearing.
Shilei Xu, Jinji Sun, Zhipeng Wang
doaj   +1 more source

An Overview on Electrodynamic Bearings

open access: yesIEEE Access, 2022
In electrodynamics, the levitation ensues when there is a relative motion between a stator and a conductor owing to which high eddy currents are induced.
Supreeth D. K.   +2 more
doaj   +1 more source

PARK(ing) time–How park deficiency affects the biological clock in a Drosophila model of Parkinson's disease

open access: yesFEBS Letters, EarlyView.
Drosophila park mutants serve as a model for Parkinson's disease. We used this strain to investigate the connection between oxidative stress and the circadian clock mechanism. We showed that increased oxidative stress affects the physiology of pacemaker cells, disrupting their daily structural plasticity. Lack of rhythmic signaling from pacemaker cells
Kamila Zientara   +3 more
wiley   +1 more source

Common-Mode Choke Design to Eliminate Electrostatic Discharge Machining Bearing Currents in Wide-Bandgap Inverter-Fed Motor Drives

open access: yesEnergies
The electrification of mobility sectors, including automotive, aerospace, and robotics, has accelerated the need for compact and high-efficiency power converters in electric motor drives. Wide-bandgap (WBG) semiconductor–based inverters offer significant
Mustafa Memon, Mohamed Diab
doaj   +1 more source

Influence of static rotor unbalance on inverter-induced bearing currents

open access: yes, 2022
The influence of static rotor imbalance on the generation of bearing fluting due to bearing currents is experimentally investigated. For that six inverter-fed induction machines with the rated power of 1.5 kW and three with the rated power of 11 kW were ...
Safdarzadeh, Omid   +2 more
core  

Review on system parameters in variable speed AC-induction motor drives with parasitic electric bearing currents

open access: yes, 2021
High frequency bearing currents are a parasitic phenomenon that affects inverter-fed induction machines, causing damage and wear to the mechanical bearings, which might lead to unexpected failures, increase of the machine downtime and reduction of its ...
Weicker, Martin, Binder, Andreas
core   +1 more source

Home - About - Disclaimer - Privacy