Results 51 to 60 of about 168 (129)

Parameter Optimization of Grid‐Forming Converters by Maximizing Domain of Attraction Estimates of Converter‐Integrated Power Systems

IET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
Grid‐forming converters (GFMCs) are expected to replace synchronous generators (SGs) in future power systems with high penetration of power electronics. This paper proposes a controller parameter optimization method for GFMCs by maximizing the domain of attraction estimates using sum‐of‐squares programming, significantly improving transient stability ...
Yang Liu, Qianghui Hao, Zhenjia Lin, Yuanzheng Li, Qiuwei Wu, Yiming Ma   +5 more
wiley   +1 more source

An improved grid-forming control method with adaptive virtual impedance combining current limitation and transient stability improvement

International Journal of Electrical Power & Energy Systems
The virtual impedance (VI) control method is widely used to limit fault current for grid-forming converter (GFMC). However, in this article, it is found that the VI deteriorates the transient synchronization stability of the GFMC under grid faults.
Xiaoping Zhou, Lei Zhang, Hanting Peng, Lerong Hong, Qianming Xu, Zhen Zhang, Jiakun Shao, Jianchao Ma, Yizhen Hu   +8 more
doaj   +1 more source

Strong Electrostatic Control of Excitonic Features in MoS2 by a Free‐Standing Ultrahigh‐κ Ferroelectric Perovskite

Advanced Functional Materials, Volume 34, Issue 52, December 23, 2024.
This work demonstrates the electrostatic control of photoluminescence in monolayer MoS2 using free‐standing BaTiO3 (BTO) at room temperature. BTO enables highly tunable exciton emission with minimal gate voltage. It induces large peak emission shifts and tunable A trion binding energy.
Thomas Pucher, Sergio Puebla, Victor Zamora, Estrella Sánchez Viso, Victor Rouco, Carlos Leon, Mar Garcia‐Hernandez, Jacobo Santamaria, Carmen Munuera, Andres Castellanos‐Gomez   +9 more
wiley   +1 more source

Microwave-Assisted Routes for the Synthesis of Complex Functional Oxides

Inorganics, 2015
The synthesis of complex functional inorganic materials, such as oxides, can be successfully performed by using microwave irradiation as the source of heat.
Jesús Prado-Gonjal, Rainer Schmidt, Emilio Morán   +2 more
doaj   +1 more source

Concept for Integrated Fire Management on Terrain Contaminated by Radionuclides in the Chornobyl Exclusion Zone

Biodiversidade Brasileira, 2019
A concept for Integrated Fire Management (IFM) on terrain contaminated by radionuclides in the Chornobyl Exclusion Zone (CEZ) was developed within cooperative efforts of the U.S.
Sergiy Zibtsev, Johann Georg Goldammer, Victor Myroniuk, Vasyl Gumeniuk, Olexandr Soshenskii, Petro Yavorovskii   +5 more
doaj   +1 more source

Climate Change, Wildfires and Fir Forests in Greece: Perceptions of Forest Managers

South-East European Forestry, 2015
Background and Purpose: The potential impact that climate change may have on fire regime in ecosystems that are not fire-dependent emerges from fires that are nowadays spreading over higher altitudes and northern latitudes. The effects of fire occurrence
Ioannis Mitsopoulos, Yannis Raftoyannis, Dimitrios Bakaloudis   +2 more
doaj   +1 more source

Quantifying the economic effects of different fishery management regimes in two otherwise similar fisheries. [PDF]

PLoS One, 2023
Liese C, Crosson S.
europepmc   +1 more source

Fire occurrence zoning from local to global scale in the European Mediterranean basin: implications for multi-scale fire management and policy

iForest - Biogeosciences and Forestry, 2016
This study proposes and evaluates a relatively new concept for fire occurrence zoning based on documented historical fire records. The proposed method creates continuous kernel density surfaces based on wildland fire ignition observations.
Koutsias N, Allgöwer B, Kalabokidis K, Mallinis G, Balatsos P, Goldammer Johann G   +5 more
doaj   +1 more source

Forest Fires Under Abnormal Weather Conditions in Central Siberia [PDF]

Сибирский лесной журнал, 2014
Occurrence of forest fires and their development to large and catastrophic wildfires are considered for Central Siberia taiga subzones under abnormal drought conditions.
E. N. Valendik, Ye. K. Kisilyakhov, V. A. Ryzhkova, E. I. Ponomarev, J. G. Goldammer   +4 more
doaj  

Oscillation Suppression of Grid-Following Converters by Grid-Forming Converters with Adaptive Droop Control

Energies
The high penetration of renewable energy sources (RESs) and power electronics devices has led to a continuous decline in power system stability. Due to the instability of grid-following converters (GFLCs) in weak grids, the grid-forming converters (GFMCs)
Lifeng Qiu, Miaosong Gu, Zhongjiang Chen, Zhendong Du, Ligang Zhang, Wenrui Li, Jingyi Huang, Jingyang Fang   +7 more
doaj   +1 more source