Results 11 to 20 of about 674,158 (355)

Computation of the optimal relative pose between overlapping grid maps through discrepancy minimization [PDF]

open access: yes, 2010
Grid maps are a common environment representation in mobile robotics. Many Simultaneous Localization and Mapping (SLAM) solutions divide the global map into submaps, forming some kind of graph or tree to represent the structure of the environment, while ...
Hernando Gutiérrez, Miguel   +4 more
core   +2 more sources

Constraining the subgrid physics in simulations of isolated dwarf galaxies [PDF]

open access: yes, 2016
Simulating dwarf galaxy halos in a reionizing Universe puts severe constraints on the sub-grid model employed in the simulations. Using the same sub-grid model that works for simulations without a UV-background (UVB) results in gas poor galaxies that ...
De Rijcke, Sven   +2 more
core   +2 more sources

Grid-forming and Grid-Following Dual-Mode Switching Strategy Based on APS-IPSO for Grid-Forming Energy Storage [PDF]

open access: yesDianli jianshe
[Objective] Addressing the challenge that grid-forming energy storage converters,operating in a single mode,struggle to adapt to variations in grid short-circuit ratio and complex fault disturbances,this paper proposes a dual-mode switching strategy ...
CHEN Xiaoyang, LI Chenyang, XU Hengshan, MA Xin, MI Ma, SUOLANG Pingcuo
doaj   +1 more source

Voltage Sensorless Grid-Forming Power Converters

open access: yes2020 IEEE 21st Workshop on Control and Modeling for Power Electronics (COMPEL), 2020
During the years, synchronization systems in power converter control has been mainly used for estimating the phase angle and the magnitude of the grid voltage, this estimated information is usually used for droop control strategies to ensure power sharing among power converters.
Tarraso Martínez, Andrés   +3 more
openaire   +1 more source

Fault ride‐through control based on voltage prioritization for grid‐forming converters

open access: yesIET Renewable Power Generation, 2023
This paper discusses that the existing grid codes on the fault ride‐through (FRT) operation have certain complications to be implemented in the grid‐forming (GFM) converters.
Saman Dadjo Tavakoli   +3 more
doaj   +1 more source

Synchronization of Inverters in Grid Forming Mode

open access: yesIEEE Access, 2022
This article compares two strategies for seamless (re)connection of grid-forming inverters to a microgrid powered by droop-controlled inverters. While an incoming inverter must be synced to the microgrid, seamless syncing and power-sharing are technical ...
Dushyant Sharma   +2 more
doaj   +1 more source

"Weak Grids "Weak Grids and and GridGrid--Forming Converters"Forming Converters"

open access: yes, 2021
This presentation was part of the SP5 & SP6 WEBINAR on Grid solutions to realize 450 GW of offshore wind capacity by 2050.
openaire   +1 more source

Grid Forming Inverter Modeling, Control, and Applications

open access: yesIEEE Access, 2021
This paper surveys current literature on modeling methods, control techniques, protection schemes, applications, and real-world implementations pertaining to grid forming inverters (GFMIs).
Dayan B. Rathnayake   +7 more
doaj   +1 more source

Inclination Dependence of Lyman-Alpha Properties in a Turbulent Disk Galaxy [PDF]

open access: yes, 2014
We present simulations of Lyman-Alpha radiation transfer in an isolated disk galaxy with a turbulence sub-grid model, multi-phase interstellar medium and detailed star formation modelling. We investigate the influence of inclination on the observed Lyman-
Behrens, Christoph, Braun, Harald
core   +1 more source

Voltage-based droop control of renewables to avoid on-off oscillations caused by overvoltages [PDF]

open access: yes, 2013
To achieve the environmental goals set by many governments, an increasing amount of renewable energy, often delivered by distributed-generation (DG) units, is injected into the electrical power system.
De Kooning, Jeroen   +3 more
core   +1 more source

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