Results 11 to 20 of about 504,253 (264)

A fault-tolerance topology of three-level four-leg NPC inverter

open access: yesGong-kuang zidonghua, 2016
In view of problem that it is difficult to accurately locate device failure of inverter, a fault tolerance topology of three-level four-leg NPC inverter was proposed.
QIU Shiguang, LI Siguang
doaj   +1 more source

On the stability of four-legged tables [PDF]

open access: yesPhysics Letters A, 2007
We prove that a perfect four-feet square table, posed in a continuous irregular ground with a local slope of at most 15 degrees can be put in equilibrium on the ground by a "rotation" of less than 90 degrees. We also discuss the case of non-square tables and make the conjecture that equilibrium can be found if the four feet are on a ...
openaire   +2 more sources

Rural Two-Lane Two-Way Three-Leg and Four-Leg Stop-Controlled Intersections: Predicting Road Safety Effects

open access: yesThe Baltic Journal of Road and Bridge Engineering, 2017
The study focused on grade-level rural two-lane two-way three-leg and two-lane two-way four-leg stop-controlled intersections located in the flat area with a vertical grade of less than 5%.
Salvatore Antonio Biancardo   +3 more
doaj   +1 more source

Reduced-Sensors-Based Predictive Controller for LC Filtered Four-Leg Inverters

open access: yesIEEE Open Journal of Industry Applications, 2021
The high number ofsensors, ten in total, required by the traditional finite control set model predictive control (FCS-MPC) strategy of a four-leg inverter with LC output filter increases the complexity and cost of the system and limits the practical ...
D. Xiao   +3 more
doaj   +1 more source

New design procedure for four-leg channelized intersections

open access: yesGrađevinar, 2017
The design and possible simplifications of four-leg channelized intersections are analysed in the paper. The research resulted in a new simpler approach in which all intersection elements are properly formed from the very beginning, so that the need for ...
Ivica Stančerić   +2 more
doaj   +1 more source

Understanding roundabout safety through the application of advanced econometric techniques

open access: yesInternational Journal of Transportation Science and Technology, 2020
Intersections present a significant safety concern, as such in an effort to reduce the more serious injuries occurring at or near intersections, many jurisdictions have turned to implementing roundabouts.
Hamsa Abbas Zubaidi   +2 more
doaj   +1 more source

The Leg Sensilla of Insects from Different Habitats—Comparison of Strictly Aquatic and Riparian Bugs (Corixidae, Ochteridae, Gelastocoridae: Nepomorpha: Insecta: Heteroptera)

open access: yesInsects, 2023
The aim of this study was to analyze morphological types and arrangement of the leg sensilla of Corixidae, Ochteridae and Gelastocoridae, in relation to their various habitats.
Agnieszka Nowińska   +2 more
doaj   +1 more source

Improved Voltage Unbalance and Harmonics Compensation Control Strategy for an Isolated Microgrid

open access: yesEnergies, 2018
This paper suggests an enhanced control scheme for a four-leg battery energy storage systems (BESS) under unbalanced and nonlinear load conditions operating in the isolated microgrid.
Mohammad Jafar Hadidian Moghaddam   +6 more
doaj   +1 more source

Capacity Analysis Procedure for Four-leg Non-standard Unsignalised Intersections

open access: yesPromet (Zagreb), 2017
Procedures for capacity analysis of two-way stop controlled (TWSC) appeared in scientific literature in the 1970s. In addition to standard TWSC intersections, there are also non-standard unsignalised intersections.
Vuk Bogdanović   +3 more
doaj   +1 more source

Assessment of Model Predictive Voltage Control for Autonomous Four-Leg Inverter

open access: yesIEEE Access, 2020
The Finite control set model predictive control (FCS-MPC) is recently introduced to control inverters without the modulation stage. The absence of the modulation stage gives an unpredictable performance of the control system.
Raef Aboelsaud   +5 more
doaj   +1 more source

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