Results 11 to 20 of about 500,664 (278)

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

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

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

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

Zero-Sequence Voltage Injection Method for DC Capacitor Voltage Balancing of Wye-Connected CHB Converter under Unbalanced Grid and Load Conditions

open access: yesEnergies, 2021
Leg capacitor energy balancing control is one of the crucial issues for stable operation of a cascaded H-bridge (CHB) converter. Because this topology inherently consists of numerous submodule cells with DC capacitors, the cell voltages and leg capacitor
Jae-Myeong Kim   +2 more
semanticscholar   +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

Hybrid Reluctance Machine with Skewed Permanent Magnets and Zero-Sequence Current Excitation

open access: yesEnergies, 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

Application of symmetrical component method in protection system of bolter-miner

open access: yesGong-kuang zidonghua, 2017
In view of problems of low reliability and accuracy of fault diagnosis of asynchronous motor in bolter-miner, symmetrical component method was purposed to apply in protection system of bolter-miner to realize asymmetry over-current fault diagnosis. Three-
JIAO Xiaofeng
doaj   +1 more source

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