Results 11 to 20 of about 898,016 (304)
Effect of Multilevel Inverter Supply on Core Losses in Magnetic Materials and Electrical Machines [PDF]
IEEE Transactions on Energy Conversion, 2015 The effect of multilevel inverter supply on power losses in magnetic cores and electrical machines is studied. A dynamic numerical model for the hysteresis, eddy current, and excess losses in a core lamination is first developed.
Abdallh, Ahmed +5 more
core +3 more sources
Energies, 2022 Although it is well known that the magnetic properties of electrical steel can be deeply affected by the cutting process, it is still not clear how to accurately evaluate these effects on a prototyped machine on its final shape, especially at a high ...
Ahmed Selema +2 more
doaj +1 more source
Analysis of Core Losses in Transformer Working at Static Var Compensator
Energies, 2023 This article presents the comparison of 3D and 2D finite element models of a power transformer designed for reactive power compensation stations. There is a lack of studies in the literature on internal electromagnetic phenomena in the active part of a ...
Piotr Osinski, Pawel Witczak
doaj +1 more source
Low Loss Tapered Polysilicon Core Fibers [PDF]
Conference on Lasers and Electro-Optics, 2016 We have fabricated small core polysilicon waveguides by tapering bulk, as-drawn silicon optical fibers. The taper process acts to improve the local crystallinity of the core, resulting in a significant reduction in the material loss.
Suhailin, Fariza +8 more
openaire +2 more sources
Low Loss Antiresonant Hollow Core Fibres [PDF]
Advanced Photonics, 2011 We study the loss mechanisms in novel antiresonant hollow-core fibres and demonstrate the importance of optimising the air-cladding thickness and reducing the node size. Based on these rules we fabricate fibres with wide-bandwidth and low-loss.
Poletti, F. +2 more
openaire +2 more sources
IEEE Access, 2021 A two-step efficiency optimization of a three-phase voltage source inverter with series R damped LCL filter is proposed. The first optimization step aims to find the optimal parameters of the series R damped LCL filter at rated load conditions.
Ahmed Koran +2 more
doaj +1 more source
Study on magnetic properties of FeSiCr soft magnetic powders prepared by water atomization
Fenmo yejin jishu, 2021 The FeSiCr soft magnetic alloy powders were prepared by water atomization, and the powders with the particle size (D50) between 5 and 40 μm were obtained.
MENG Ling-bing +5 more
doaj +1 more source
Equation of motion coupled-cluster approach for intrinsic losses in x-ray spectra
, 2020 We present an equation of motion coupled cluster approach for calculating and understanding intrinsic inelastic losses in core level x-ray absorption spectra (XAS).
Hirshberg, Nitzan Y. +5 more
core +1 more source
On the variation with flux and frequency of the core loss coefficients in electrical machines [PDF]
, 2006 A model of core losses, in which the hysteresis coefficients are variable with the frequency and induction (flux density) and the eddy-current and excess loss coefficients are variable only with the induction, is proposed. A procedure for identifying the
Dellinger, S.J. +5 more
core +1 more source
Energies, 2017 This study deals with the core design of a PM vernier machine considering modulation flux effects, and the comparative investigation on volume and performance characteristics of the vernier over conventional PM machines are addressed.
Byungtaek Kim
doaj +1 more source