Results 21 to 30 of about 1,542,691 (303)

Efficiency Improvement of Fault-Tolerant Three-Level Power Converters [PDF]

open access: yes, 2018
Fault-tolerant power converters play a critical role in the transportation electrification. However, fault-tolerant operation, high efficiency, and low cost usually result in design criteria that have conflicting constraints and goals.
He, Jiangbiao   +3 more
core   +2 more sources

Accounting losses of idling of transformers in the period of exploitation at calculation losses of the electric power in distributive networks

open access: yesИзвестия высших учебных заведений: Проблемы энергетики, 2017
In the presented article the nature of emergence losses of idling of power transformers, the reasons of increase in these losses during operation is considered. On the basis of processing statistical data values of these changes are estimated.
E. I. Gracheva   +2 more
doaj   +1 more source

Investigating the Influence of PWM-Driven Cascaded H-Bridges Multilevel Inverter on Interior Permanent Magnet Synchronous Motor Power Losses

open access: yesEnergies
This paper presents an accurate analysis of the power losses of an interior permanent magnet synchronous motor fed by a cascaded H-bridge multilevel inverter.
Claudio Nevoloso   +6 more
doaj   +1 more source

Experimental investigations on churning power losses generated in a planetary gear set

open access: yesJournal of Advanced Mechanical Design, Systems, and Manufacturing, 2017
This study aims to experimentally investigate churning power losses generated by a planetary gear set which is splash lubricated. To this end, a specific test rig has been used to operate a planetary gear train under unloaded conditions in various ...
Jean-Baptiste BONI   +3 more
doaj   +1 more source

COMPONENTS OF TOTAL ELECTRIC ENERGY LOSSES POWER IN PQR SPATIAL COORDINATES

open access: yesElectrical engineering & Electromechanics, 2016
Purpose. To obtain relations determining the components of the total losses power with p-q-r power theory for three-phase four-wire energy supply systems, uniquely linking four components: the lowest possible losses power, losses power caused by the ...
G.G. Zhemerov, D.V. Tugay
doaj   +1 more source

Electromagnetic losses in magnetic shields for buried high voltage cables [PDF]

open access: yes, 2011
The electromagnetic losses and shielding efficiency of shields for a buried three phase high voltage cable are studied for several shielding configurations.
Koroglu, Selim, Sergeant, Peter
core   +2 more sources

Design of Gear Churning Power Loss Measurement Device

open access: yesMATEC Web of Conferences, 2017
To explore the impacts of gear churning power losses, a research was conducted to achieve the internal causes of power losses of churning gear by designing a gear churning power losses measurement device.
Wang Bin, Zhou Ya Jie, Wang Ping
doaj   +1 more source

Designing power inductors: practical solutions [PDF]

open access: yes, 2011
An overview of losses and thermal aspects if power inductors is given. Most of the time core losses are given only for sine square wave, but users use it in square waves. Also bulk currents affect losses in larger inductors.
Van den Bossche, Alex
core   +1 more source

Towards Quantitative Simulations of High Power Proton Cyclotrons

open access: yes, 2010
PSI operates a cyclotron based high intensity proton accelerator routinely at an average beam power of 1.3MW. With this power the facility is at the worldwide forefront of high intensity proton accelerators.
Adelmann, A.   +6 more
core   +2 more sources

Dietary Protein Intake and Peritoneal Protein Losses in Peritoneal Dialysis Patients

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Peritoneal dialysis (PD) patients lose protein in their waste dialysate, potentially increasing their risk for malnutrition. We wished to determine whether there was any association between losses and dietary protein intake (DPI). Methods DPI was assessed from 24‐h dietary recall using Nutrics software.
Haalah Shaaker, Andrew Davenport
wiley   +1 more source

Home - About - Disclaimer - Privacy