Results 51 to 60 of about 14,226,728 (252)

Neural network‐based integrated reactive power optimization study for power grids containing large‐scale wind power

open access: yesIET Generation, Transmission & Distribution
The high uncertainty of wind power output greatly affects the rapid reactive power optimization of power systems. This paper proposes a neural network‐based comprehensive reactive power optimization method for large‐scale wind power grids, effectively ...
Jie Zhao   +5 more
doaj   +1 more source

Improved Voltage Support Method for Unbalanced Grid Condition [PDF]

open access: yesDianli jianshe
[Objective] With the integration of large-scale distributed photovoltaics,issues such as reverse power flow and overvoltage arise,posing challenges to the safe and stable operation of power systems.
CAO Xiaoqing, LI Te, LI Lin, CHEN Di, ZHOU Zhengxu, SHI Xiaojie
doaj   +1 more source

Liver organoids: modelling complexity in homeostasis and disease

open access: yesFEBS Letters, EarlyView.
Studying liver in vitro has been challenging because simple 2D cell cultures fail to capture liver's cellular and architectural complexity. To bridge this gap, scientists increasingly use organoids, 3D liver models which better mimic liver composition and function. This review examines recent advances in liver organoid complexity and realism, discusses
Anna M. Dowbaj, Meritxell Huch
wiley   +1 more source

Efficient single phase transformerless inverter for grid-tied PVG system with reactive power control

open access: yes, 2016
There has been an increasing interest in transformerless inverter for grid-tied photovoltaic (PV) system due to low cost, high efficiency, light weight, etc.
Islam, Monirul   +2 more
core   +1 more source

Pliant active and reactive power control for grid-interactive converters under unbalanced voltage dips [PDF]

open access: yes, 2010
During voltage dips continuous power delivery from distributed generation systems to the grid is desirable for the purpose of grid support. In order to facilitate the control of inverter-based distributed power generation adapted to the expected change ...
Hendrix, M.A.M.; id_orcid   +7 more
core   +2 more sources

Emerging experimental and computational methods for studying redox‐regulated structural transitions

open access: yesFEBS Letters, EarlyView.
Redox reactions can reshape proteins and alter how they behave in cells, with important consequences for health and disease. This review explores emerging experimental and computational approaches for discovering these redox‐sensitive protein switches, revealing their structural effects, and predicting their behavior, opening new opportunities to ...
Tasneem Rass   +2 more
wiley   +1 more source

Functional comparison of EncB and EncC cargo proteins in iron storage within the Myxococcus xanthus encapsulin

open access: yesFEBS Letters, EarlyView.
Encapsulins are protein nanocompartments that play an important role in iron storage. In the Myxococcus xanthus encapsulin system, two cargo proteins called EncB and EncC contribute to iron mineralization. Here, we show that EncB and EncC generate iron‐containing minerals with distinct chemical compositions, suggesting that the composition of stored ...
Harry B. McDowell   +2 more
wiley   +1 more source

Power Quality Improvement Wind Energy System Using Cascaded Multilevel Inverter [PDF]

open access: yes, 2013
In this paper, a wind energy conversion system based on a cascaded H-bridge multilevel inverter (CHBMLI) topology has been proposed to be used for the grid interface of large split winding alternators (SWAs).
J.S., Sathiyanarayanan, A. S., Kumar
core   +2 more sources

Negative-Sequence Reactive Power Control and Active Power Control for DC/3ϕ Power Conversion Using Single-Delta Bridge-Cell (SDBC) Converter

open access: yesIEEE Access
This paper focuses on a DC/ $3\phi $ power converter combining the single-delta bridge-cell (SDBC) converter and a single-phase PWM converter via a medium-frequency transformer for voltage flicker mitigation.
Atsuya Suzuki   +2 more
doaj   +1 more source

Reactive Power Management in Renewable Rich Power Grids: A Review of Grid-Codes, Renewable Generators, Support Devices, Control Strategies and Optimization Algorithms

open access: yesIEEE Access, 2018
Power electronic converter (PEC)-interfaced renewable energy generators (REGs) are increasingly being integrated to the power grid. With the high renewable power penetration levels, one of the key power system parameters, namely reactive power, is ...
Mohammad Nazmul Islam Sarkar   +2 more
doaj   +1 more source

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