Results 111 to 120 of about 1,715,225 (335)
Online Recognition Method for Voltage Sags Based on a Deep Belief Network
Energies, 2018 Voltage sag is a serious power quality phenomenon that threatens industrial manufacturing and residential electricity. A large-scale monitoring system has been established and continually improved to detect and record voltage sag events.
Fei Mei +6 more
doaj +1 more source
Cereal Chemistry, EarlyView.ABSTRACT Background and Objectives The recent trend towards healthy food choices and sustainable agriculture has revived interest in underutilized wheat species such as emmer, einkorn, and spelt. Given these developments, the objective of the study was to compare the differences in chemical composition and digestibility characteristics among ...
Sathsara Deyalage +5 more
wiley +1 more source
An estimation method of lightning-voltage sag severity based on adaptive association rule mining
Diance yu yibiaoAccurate estimation of voltage sag severity can provide a basis for sensitive users to adjust their production mode and avoid economic losses in advance. In view of lightning, which is the main cause of voltage sag, the widely deployed lightning location
WANG Ying +3 more
doaj +1 more source
Improved Space Vector Modulation of Quasi Z-Source Inverter to Suppress DC-Link Voltage Sag
IEEE Access, 2019 The three traditional strategies ZSVM1, ZSVM2, and ZSVM6 have been commonly used to control the quasi Z-source inverter (qZSI). However, there is a serious problem that the dc-link voltage of the qZSI drops under light load, leading to the distortion of ...
Yuyao He, Yuhao Xu, Jinping Chen
doaj +1 more source
Proposal of voltage transient sag compensator with controlled gradational voltage
Electrical Engineering in Japan, 2005 This paper presents a new concept for a voltage transient sag compensator and the experimental result of its 400-V-class compensator. This compensator is composed of the series connection of some inverter units with gradational output voltages. Because each output voltage is different by 2n times, an approximate sinusoidal voltage is generated by ...
Masaki Yamada +6 more
openaire +2 more sources
Deep Underground Science and Engineering, EarlyView.B1 is bord width 1, B2 is bord width 2, L is the pillar length, W is the pillar width, red color and letter A represent the pillars, and white color and number 1 represent excavated areas. Pstress is the average pillar stress; σv is the vertical component of the virgin stress, MPa; and e is the areal extraction ratio. e = B o B o + B P ${\rm{e}}=\frac{{
Tawanda Zvarivadza +4 more
wiley +1 more source
Voltage Sag : Malaysian's Experience
, 1998 Voltage sag is one of the major components of power quality of an electric power system. In Malaysia, transmission system's disturbance becomes a dominant source.
Ab Ghani, Mohd Ruddin
core
SVD Applied to Voltage Sag State Estimation [PDF]
, 2013 The method presented in this paper addresses the problem of voltage sag state estimation (VSSE). The problem consists in estimating the voltage sags frequency at non-monitored buses from the number of sags measured at monitored sites.
Castro Fernández, Rosa María de +3 more
core +1 more source
Deep Underground Science and Engineering, EarlyView.This study demonstrates the feasibility of an underground closed‐loop thermal storage facility at a post‐mining site, intended for seasonal heat energy storage. Its principal design shows water flow directions in winter and summer (1, 2), heat pumps (3), an upper water reservoir (4), and connecting pipes (5).
Dmytro Rudakov, Oleksandr Inkin
wiley +1 more source
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.This work developed a low‐temperature sludge hydrothermal coupled with gel crosslinking strategy which could upgrade the waste liquid generated from sewage sludge hydrothermal treatment into the hydrothermal‐liquid‐gel. The inventive hydrothermal‐liquid‐gel exhibited the enhanced pollutant removal capability, high synthetic stability, and superior ...
Zifan Liu +12 more
wiley +1 more source