Results 71 to 80 of about 1,996 (169)
About generation of subharmonics and stochatic regimes arising in periodic plasma-filled waveguides excited by charged beam [PDF]
, 2000 Various mechanisms for generation of subharmonics in periodic plasma-filled waveguides excited by charged beam are considered. It is shown that beam particles seized by the excited electromagnetic wave can demonstrate under certain conditions the complex
Zaginajlov, G.I. +4 more
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Effect of Voltage Fluctuations on Induction Motor Currents
Scientific Journal of Gdynia Maritime UniversityOne of the types of power quality disturbances met in a power system is voltage fluctuations. Cyclic voltage fluctuations are interconnected with the presence of subharmonics and interharmonics – that is components of frequency less than the fundamental
Marcin Pepliński, Piotr Gnaciński
doaj +1 more source
Cohomogeneity‐one solitons in Laplacian flow: Local, smoothly‐closing and steady solitons
Journal of the London Mathematical Society, Volume 113, Issue 6, June 2026.Abstract We initiate a systematic study of cohomogeneity‐one solitons in Bryant's Laplacian flow of closed G2$\text{G}_2$‐structures on a 7‐manifold, motivated by the problem of understanding finite‐time singularities of that flow. Here, we focus on solitons with symmetry groups Sp(2)${\rm Sp}(2)$ and SU(3)${\rm SU}(3)$; in both cases, we prove the ...
Mark Haskins, Johannes Nordström
wiley +1 more source
Modeling of subharmonics and chaos in DC motor drives [PDF]
, 1997 In this paper, the nonlinear dynamics of both voltage-mode and current-mode controlled dc motor drive systems are presented. The investigation is based on the derivation of the discrete mappings that describe their system subharmonics and chaos in the ...
Chen, JH +3 more
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Nielsen number and differential equations
Fixed Point Theory and Applications, 2005 In reply to a problem of Jean Leray (application of the Nielsen theory to differential equations), two main approaches are presented. The first is via Poincaré's translation operator, while the second one is based on the Hammerstein-type solution ...
Jan Andres
doaj +2 more sources
Effect of Rectangular Voltage Fluctuations on Currents of Single-Phase Induction Motors
Scientific Journal of Gdynia Maritime UniversityVarious power quality disturbances commonly occur in a power system, including voltage fluctuations. These can be analysed as simultaneous occurrences of voltage subharmonics and interharmonics of various frequencies – components of frequency less than ...
Marcin Pepliński, Piotr Gnaciński
doaj +1 more source
On the Subharmonics in Nonlinear Rolling
, 1984 In this paper, the existence of subharmonic oscillations in the rolling motion is investigated. To this end, the roll motion is described by a mathematical model nonlinear both in the restoring and in the damping.
FRANCESCUTTO, ALBERTO +2 more
core
Influence of subharmonics on thermal loads of an induction machine [PDF]
, 2009 One of most important energy receivers is an induction cage machine. It can work properly provided that it is supplied with balanced, sinusoidal voltage of appropriate frequency and rms value.
Pepliński, M. +2 more
core
Applied SciencesThe effects of harmonics, interharmonics, and subharmonics on low-voltage distribution networks, leading to a deterioration in electrical power quality, have become more evident in recent years.
Germán Martínez-Navarro +3 more
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Subharmonics are not an infallible safety metric for cavitation dynamics
International Journal of HyperthermiaObjective There has been a substantial increase in the range of applications for focused ultrasound in recent years with multiple clinical trials reporting promising results.
Qiang Wu +6 more
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