Results 11 to 20 of about 5,296,797 (286)

Characteristic Quantity Analysis of Single-Phase Contact Tree Ground Fault of Distribution Network Overhead Lines

open access: yesEnergies, 2023
When the overhead line passes through the forest area, the conductor may contact the line to induce the tree-contact single-phase-to-ground fault (TSF), and the persistence of TSF may induce wildfires, bringing serious consequences.
Jianbo He   +6 more
doaj   +1 more source

Analysis on Circulating Current and Split Capacitor Voltage Balance for Modular Multilevel Converter Based Three-phase Four-wire Split Capacitor DSTATCOM

open access: yesJournal of Modern Power Systems and Clean Energy, 2021
We propose a modular multilevel converter (MMC) based three-phase four-wire (3P4W) split capacitor distribution static synchronous compensator (DSTATCOM), aiming at compensating unbalanced and reactive load currents.
Lei Lin, Jialu He, Chen Xu
doaj   +1 more source

Assessment of asymmetry parameters for zero sequence component in the medium voltage network [PDF]

open access: yes, 2019
W pracy wyprowadzono parametryczne zależności pozwalające szacować wielkości charakteryzujące asymetrię napięcia, prądów, mocy i admitancji dla podstawowej i wyższych harmonicznych składowych symetrycznych zerowych.
Marciniak, Lubomir
core   +1 more source

Single-phase grouding fault analysis and control scheme of transformerless flexible multistate switch

open access: yesThe 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

Sequence Subsums in Zero-Sum Theory

open access: yes, 2021
The last few years have seen the development and improvement of structural results in the area of sequence subsums over abelian groups. These results often have the flavor that either many elements can be represented as a sum of terms from  a ...
Grynkiewicz, David
core   +1 more source

High Frequency Resonance Suppression Strategy of Three-Phase Four-Wire Split Capacitor Inverter Connected to Parallel Compensation Grid

open access: yesEnergies, 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

An individual sequencing control strategy for three-phase four-leg inverter under unbalanced loads

open access: yesEnergy 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]

open access: yesJournal of Hebei University of Science and Technology
Aiming 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

An Optimized Carrier Phase-Shifted Modulation Strategy for Cuk PV Inverter

open access: yesIEEE Access, 2023
There exists the problems of output voltage zero-point drift and high even harmonic content of the three-phase Cuk liftable voltage photovoltaic (PV) inverter when it adopts the conventional carrier modulation method.
Renxi Gong, Cheng Zhao
doaj   +1 more source

Automated signature generation for Zero-day polymorphic worms using a Double-honeynet [PDF]

open access: yes, 2012
Includes bibliographical references.This thesis proposes an accurate system for signature generation for Zero-day polymorphic worms. Thesis consists of two parts: In part one, polymorphic worm instances are collected by designing a novel Double-honeynet ...
Mohammed, Mohssen M Z E
core   +1 more source

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