Results 11 to 20 of about 1,151,086 (296)
Optimum Watermark Detection and Embedding in Digital Images [PDF]
, 1998 This work concentrates on the problem of watermarking of still images using the luminance component, through the use of spread spectrum techniques, both in space (direct sequence spread spectrum or DSSS) and frequency (frequency hopping or FH), following
Sayrol Clols, Elisa +1 more
core +1 more source
Demagnetisation fault detection in PMSM using zero sequence current components
Electronics Letters, 2017 A demagnetisation fault detection method for a delta‐connected permanent magnet synchronous machine (PMSM) based on zero sequence current components (ZSCC) is proposed. The model of the delta‐connected PMSM with the demagnetisation fault is first established.
Shichuan Ding +3 more
openaire +1 more source
Manifolds with small Heegaard Floer ranks [PDF]
, 2009 We show that the only irreducible three-manifold with positive first Betti number and Heegaard Floer homology of rank two is homeomorphic to zero-framed surgery on the trefoil.
Gabai +7 more
core +2 more sources
The Journal of Engineering, 2019 The compact design is suitable for the urban areas with intensive loads. The flexible multistate switch (FMS) can effectively reduce the footprint by removing transformers, which is the development trend of the flexible AC distribution equipment.
Feng Xu +5 more
doaj +1 more source
Energies, 2022 With the continuous penetration and development of renewable energy power generation, the distributed grid and the microgrid are becoming increasingly important in modern power systems.
Guoli Feng +5 more
doaj +1 more source
On the multiplicity of the zero-age main-sequence O star Herschel 36 [PDF]
, 2010 We present the analysis of high-resolution optical spectroscopic observations of the zero-age main-sequence O star Herschel 36 spanning six years. This star is definitely a multiple system, with at least three components detected in its spectrum.
Alfaro, Emilio J. +8 more
core +3 more sources
An individual sequencing control strategy for three-phase four-leg inverter under unbalanced loads
Energy Reports, 2023 Under the influence of the unbalanced load, the negative and zero sequence components in the output voltage of the three-phase four-leg voltage source inverter(TPFL-VSI) will cause asymmetry voltage.
Hanzhou Jiang, Huan Pan, Bin Shang
doaj +1 more source
Early slight inter-turn short circuit fault diagnosis of axial flux stator coreless permanent magnet motor based on phase difference [PDF]
Journal of Hebei University of Science and TechnologyAiming at the problem of early inter-turn short circuit fault of axial flux stator coreless motor, a method for early inter-turn short circuit fault diagnosis and positioning of axial flux stator coreless motor based on the phase difference of zero ...
Xiaoguang WANG +4 more
doaj +1 more source
Hybrid Reluctance Machine with Skewed Permanent Magnets and Zero-Sequence Current Excitation
Energies, 2022 The reluctance machine is a potential candidate for electrical vehicle propulsion because of its reliable structure, low cost, flexible flux regulation ability, and wide speed range.
Ziqi Huang +3 more
doaj +1 more source
Polarization dependent Landau level crossing in a two-dimensional electron system in MgZnO/ZnO-heterostructure [PDF]
, 2014 We report electrical transport measurements in a tilted magnetic field on a high-mobility two-dimensional electron system confined at the MgZnO/ZnO heterointerface.
Falson, J. +4 more
core +2 more sources