Results 21 to 30 of about 189,725 (256)

Copper loss analysis and loss separation method in a dynamic process of ultra‐high speed motor with slotless stator

open access: yesIET Electric Power Applications, 2023
Different from the copper loss of general permanent magnet (PM) motors, the copper loss of ultra‐high‐speed permanent magnet motors (UHSPMSM) includes DC losses and eddy current losses, which lead to difficulty in analysis.
Qixing Gao   +3 more
doaj   +1 more source

Quasi-flat linear PM generator optimization using simulated annealing algorithm for WEC in Indonesia

open access: yesJournal of Mechatronics, Electrical Power, and Vehicular Technology, 2019
Linear permanent magnet generator (LPMG) is an essential component in recent wave energy converter (WEC) which exploits wave’s heave motion. It could be classified into tubular-type, flat-tricore type, and quasi-flat type.
Budi Azhari, Fransisco Danang Wijaya
doaj   +1 more source

Grain Refinement of Permanent Mold Cast Copper Base Alloys [PDF]

open access: yes, 2005
Grain refinement is a well established process for many cast and wrought alloys. The mechanical properties of various alloys could be enhanced by reducing the grain size.
J.P.Thomson   +4 more
core   +1 more source

Effect of Magnetic Properties of Magnetic Composite Tapes on Motor Losses

open access: yesEnergies, 2022
Alternating current (AC) copper losses in motors increase with carrier frequency of the pulse width modulation (PWM) and are further increased by leakage flux of the permanent magnet. Therefore, AC copper losses increase with motor speed.
Ryo Yoshida   +9 more
doaj   +1 more source

Mitigation of high-resistance connection in surface-mounted PMSM drive system based on model predictive current control

open access: yesResults in Engineering, 2022
High-resistance connection fault can result in the increasing of power loss and the rise of heat, so the electric machine drive system possibly can be damaged.
Fan Chen   +4 more
doaj   +1 more source

Maximum Efficiency per Torque Control of Permanent-Magnet Synchronous Machines

open access: yesApplied Sciences, 2016
High-efficiency permanent-magnet synchronous machine (PMSM) drive systems need not only optimally designed motors but also efficiency-oriented control strategies. However, the existing control strategies only focus on partial loss optimization.
Qingbo Guo   +4 more
doaj   +1 more source

Modular Rotor Single Phase Field Excited Flux Switching Machine with Non-Overlapped Windings

open access: yesEnergies, 2019
This paper aims to propose and compare three new structures of single-phase field excited flux switching machine for pedestal fan application. Conventional six-slot/three-pole salient rotor design has better performance in terms of torque, whilst also ...
Lutf Ur Rahman   +7 more
doaj   +1 more source

Mac1-Dependent Copper Sensing Promotes Histoplasma Adaptation to the Phagosome during Adaptive Immunity

open access: yesmBio, 2022
Intracellular pathogens residing within macrophage phagosomes are challenged with recognizing the phagosomal environment and appropriately responding to changing host defense strategies imposed in this organelle.
Stephanie C. Ray, Chad A. Rappleye
doaj   +1 more source

A differential genome-wide transcriptome analysis : impact of cellular copper on complex biological processes like aging and development

open access: yes, 2012
The regulation of cellular copper homeostasis is crucial in biology. Impairments lead to severe dysfunctions and are known to affect aging and development.
Servos, Jörg   +11 more
core   +1 more source

Inactivation of murine norovirus on a range of copper alloy surfaces is accompanied by loss of capsid integrity

open access: yes, 2015
Norovirus is one of the most common causes of acute viral gastroenteritis. The virus is spread via the fecal-oral route, most commonly from infected food and water, but several outbreaks have originated from contamination of surfaces with infectious ...
Summersgill, Emma N.   +2 more
core   +1 more source

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