Results 31 to 40 of about 8,482 (293)

Direct AC voltage control for grid-forming inverters [PDF]

Journal of Power Electronics, 2019
Grid-forming inverters usually use inner cascaded controllers to regulate output AC voltage and converter output current. However, at the power transmission system level where the power inverter bandwidth is limited, i.e., low switching frequency, it is difficult to tune controller parameters to achieve the desired performances because of control loop ...
Qorai, Taoufik, Li, Chuanyue, Oue, Ko, Gruson, Francois, Colas, Fréderic, Guillaud, Xavier   +5 more
openaire   +3 more sources

Unified Grid-Forming/Following Inverter Control

IEEE Open Access Journal of Power and Energy, 2022
The paper describes an inverter control scheme which incorporates both a phase-locked loop (PLL) for voltage synchronization and power-frequency droop for load sharing. As such, it is a hybrid grid-forming/following controller and offers beneficial characteristics of both.
Sijia Geng, Ian A. Hiskens
openaire   +2 more sources

Transient Stability of Grid-Forming Inverters in Microgrids: Nonlinear Analysis

, 2022
A current limiting scheme is employed for Inverter-Interfaced Distributed Generation (IIDG) units, mostly in the control loops, to limit the current within the tolerable range and to facilitate the IIDG units being connected to the grid during the ...
Eskandari, M, Savkin, AV
core   +2 more sources

Load demand fulfillment through GFM-inverter based modified droop-control under various network conditions

Energy Reports
This paper offers a systematic approach to understanding the performance of the grid-forming inverter in both isolated and hybrid configuration with a grid-following inverter in low-voltage distribution network. While most existing studies concentrate on
Qusay Salem, Rafat Aljarrah, Ibrahim Abuishmais, Khaled Alzaareer, Wasseem Alrousan   +4 more
doaj   +1 more source

Comparative Analysis of Grid-Following (GFL) and Grid-Forming (GFM) Inverters: Control and Transition Capabilities

Electrical Engineering and Energy
In recent years, interest in integration of renewable energy (RE) sources (particularly Wind Energy Systems - WES) into the electrical grid for sustainable, innovative solutions and a greener future continues to grow exponentially.
Fatih Burak, Hulusi Karaca
doaj   +1 more source

Control of transient power during unintentional islanding of microgrids

, 2014
In inverter-based microgrids, the paralleled inverters need to work in grid-connected mode and stand-alone mode and to transfer seamlessly between the two modes. In grid-connected mode, the inverters control the amount of power injected into the grid. In
Sharkh, S.M., Abusara, Mohammad, Issa, Walid, Sharkh, SM, Sharkh, Suleiman, Issa, W, Abusara, M   +6 more
core   +1 more source

ALDOA Promotes Glycolysis and NLRP3/GSDMD Pyroptosis to Accelerate ALS Progression

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective Amyotrophic lateral sclerosis (ALS) is characterized by progressive motor neuron degeneration. Glycolytic dysregulation is implicated in disease progression, yet the underlying mechanisms remain unclear. This study investigates how Aldolase A (ALDOA) drives ALS progression through glycolysis‐mediated motor neuron pyroptosis.
Kaixin Yan, Yan Jiang, Yuxuan Yong, Tianshuo Zhang, Niannian Zhang, Qianqian Zeng, Xue Gong, Li Meng, Fangfang Bi, Yongmin Liu   +9 more
wiley   +1 more source

Distributed grid-forming inverters in power grids

, 2018
S.320-326In terms of grid stability a big challenge results from the massive expansion of renewable energies and the reduction of conventional power. In future, new ancillary services for grid integrated power inverters are needed while increasing the ...
Unruh, P., Gühna, T.
core   +1 more source

Understanding the Stochastic Nature of Process Parameter Development of Blown Powder Laser Beam Directed Energy Deposition Additive Manufacturing of Pure Molybdenum

Advanced Engineering Materials, EarlyView.
Identified through the use of statistical design of experiments and metallographic investigation, this study exposes the stochastic origins of intergranular cracks in blown powder laser beam directed energy deposition additive manufacturing of pure molybdenum. It further demonstrates a successful crack mitigation approach with direct correlation to the
Nathaniel J. Lies, Daniel E. Driemeyer, Aaron P. Stebner   +2 more
wiley   +1 more source

Reduced-Order Modeling and Stability Analysis of Grid-Following and Grid-Forming Hybrid Renewable Energy Plants

Energies
The control methods of energy systems can be categorized into grid-following and grid-forming types. The grid-following control method relies on grid synchronization and is prone to stability issues in weak grid conditions.
Yue Ma, Ning Chen, Luming Ge
doaj   +1 more source