Results 1 to 10 of about 925 (179)

Effects of Negative Sequence Voltage Subharmonics on Cage Induction Motors

Energies, 2022
In some power systems, voltage waveforms contain, apart from harmonics, interharmonics and subharmonics that are components of frequency less than or not an integer multiple of the fundamental frequency.
Marcin Pepliński, Piotr Klimczak, Adam Muc   +2 more
exaly   +3 more sources

Frequency jumps and subharmonic components in calls of female Odorrana tormota differentially affect the vocal behaviors of male frogs [PDF]

Frontiers in Zoology, 2023
Studies have demonstrated that the sounds of animals from many taxa with nonlinear phenomena (NLP)—caused by nonlinear characteristics of vocal organ dynamics that lead to nonlinear vocal phenomena—can influence the behavior of receivers.
Yatao Wu, Xiuli Luo, Pan Chen, Fang Zhang   +3 more
doaj   +2 more sources

High-Power Induction Motors Supplied with Voltage Containing Subharmonics

Energies, 2020
In some power networks, components of frequency less than the frequency of the fundamental voltage harmonic called subharmonics or subsynchronous interharmonics occur.
Piotr Klimczak, Piotr Gnacinski
exaly   +3 more sources

Generation of subharmonics in acoustic resonators containing bubbly liquids: A numerical study of the excitation threshold and hysteretic behavior

Ultrasonics Sonochemistry, 2022
In this paper we study the generation and behavior of subharmonics in a bubbly liquid confined in an acoustic resonator, through numerical simulations carried out at finite-amplitude acoustic pressure.
Christian Vanhille, Olivier Louisnard, Maria Teresa Tejedor Sastre   +2 more
exaly   +3 more sources

Induction Motors Under Voltage Unbalance Combined with Voltage Subharmonics

Energies
In power systems, various power quality disturbances are present, including voltage deviation, voltage unbalance, and voltage waveform distortions. Voltage waveform distortions are usually identified with harmonics, but in some systems, subharmonics ...
Marcin Pepliński, Adam Muc, Piotr Gnacinski   +2 more
exaly   +3 more sources

Tidal River Flood Risk Highest During Intermediate Rather Than Peak River Discharge

AGU Advances
Tidal rivers are defined as the tide‐influenced, salinity‐free inland reaches of estuaries. Understanding the occurrence of peak water levels (PWLs) is critical for flood risk management, yet the timing and magnitude of PWLs in tidal rivers have been ...
Leicheng Guo, Adam T. Devlin, Ton Hoitink, Ian Townend, David A. Jay, Zheng Bing Wang, Chunyan Zhu, Hamed R. Moftakhari, Qing He, Fan Xu, Yuanyang Wan, Yuan Xu, Weiming Xie   +12 more
doaj   +2 more sources

Line-Start Permanent Magnet Synchronous Motor Supplied with Voltage Containing Negative-Sequence Subharmonics

Energies, 2023
In some power systems, the voltage waveform contains frequency components less than fundamental, called subharmonics or subsynchronous interharmonics. Voltage subharmonics can be both positive- and negative-sequence, independent of their frequency (order)
Piotr Gnaciński, Marcin Pepliński, Adam Muc, Damian Hallmann   +3 more
doaj   +1 more source

Single-Phase Induction Motor Under Voltage Fluctuations

Scientific Journal of Gdynia Maritime University, 2022
Some of the most common power quality disturbances are voltage fluctuations. They are interconnected with the presence of voltage subharmonics and interharmonics.
Marcin Pepliński, Daniel Adamczak, Piotr Gnaciński   +2 more
doaj   +1 more source

Influence of Voltage Subharmonics on Line Start Permanent Magnet Synchronous Motor

IEEE Access, 2021
A particularly promising industrial prime mover is a line start permanent magnet synchronous motor (LSPMSM). LSPMSMs, just as other energy receivers, are exposed to the noxious impact of various power quality disturbances.
Piotr Gnacinski, Adam Muc, Marcin Peplinski   +2 more
doaj   +1 more source

Analysis of Interharmonics Generation in Induction Motors Driven by Variable Frequency Drives and AC Choppers

Energies, 2023
In modern power systems, interharmonics have emerged as noninteger frequency components that appear in current or voltage signals. Double-stage AC-DC-AC converters have been identified as a primary source of interharmonics.
Alberto Gudiño-Ochoa, Jaime Jalomo-Cuevas, Jesús Ezequiel Molinar-Solís, Raquel Ochoa-Ornelas   +3 more
doaj   +1 more source