Results 51 to 60 of about 13,409 (288)

Secondary Frequency and Voltage Control of Islanded Microgrids via Distributed Averaging [PDF]

, 2015
In this work we present new distributed controllers for secondary frequency and voltage control in islanded microgrids. Inspired by techniques from cooperative control, the proposed controllers use localized information and nearest-neighbor communication
Bullo, Francesco, Dorfler, Florian, Guerrero, Josep M., Shafiee, Qobad, Simpson-Porco, John W., Vasquez, Juan C.   +5 more
core   +2 more sources

An All‐Optical Driven Bio‐Photovoltaic Interface for Active Control of Live Cells

Advanced Functional Materials, EarlyView.
Bio‐photovoltaic Interface (BIO‐PV‐I) for live cell manipulation is presented. BIO‐PV‐I can be activated non‐invasively and remotely to control the spatial motility, adhesion, and morphology of cells adhering to it. BIO‐PV‐I uses a patterned light‐induced electric potential in iron‐doped lithium niobate crystals whose light‐driven and reversible nature,
Lisa Miccio, Martina Mugnano, Valentina Marchesano, Alejandro Calabuig, Zhe Wang, Gennaro Giordano, Francesca Borrelli, Simonetta Grilli, Pietro Ferraro   +8 more
wiley   +1 more source

Performance of Grid-Following and Grid-Forming Inverters Under Unintentional Islanding Events: A Comparative Study

Energies
The increasing integration of inverter-based resources in smart grid systems has deepened the necessity to understand the difference between grid-following and grid-forming inverters’ operational performance, particularly under abnormal conditions such ...
Mohammad Abu Sarhan
doaj   +1 more source

Transient Stability Analysis for Grid-Forming Inverters Transitioning from Islanded to Grid-Connected Mode

IEEE Open Journal of Power Electronics, 2022
This paper addresses the transient stability of grid-forming (GFM) inverters when transitioning from the islanded to grid-connected mode. It is revealed that the reconnection of the GFM inverters to the main grid can be equivalent to a step change of the
Teng Liu, Xiongfei Wang, Fangcheng Liu, Kai Xin, Yunfeng Liu   +4 more
doaj   +1 more source

Developing vanadium redox flow technology on a 9-kW 26-kWh industrial scale test facility: Design review and early experiments [PDF]

, 2018
Redox Flow Batteries (RFBs) have a strong potential for future stationary storage, in view of the rapid expansion of renewable energy sources and smart grids.
Alotto, Piergiorgio, D'Anzi, Angelo, Guarnieri, Massimo, TROVO', ANDREA   +3 more
core   +1 more source

3D‐Printed Porous Hydroxyapatite Formed via Enzymatic Mineralization

Advanced Functional Materials, EarlyView.
Bone combines lightness, strength, and the ability to heal, inspiring new materials design. This work introduces a room‐temperature, enzyme‐mediated 3D printing method to create porous hydroxyapatite scaffolds. The process avoids energy‐intensive sintering, preserves bioactivity, and allows control over porosity and mineralization.
Francesca Bono, Anna Puiggalí‐Jou, Greta Cocchi, Mariangela Miccoli, Katharina Maniura‐Weber, Marcy Zenobi‐Wong, Esther Amstad   +6 more
wiley   +1 more source

Impacts of grid‐forming inverters on distance protection

IET Generation, Transmission & Distribution
Abstract Grid‐forming (GFM) inverters are anticipated to play an essential role in facilitating the integration of renewable energy in bulk power systems. The fault response of GFM inverters and its impact on traditional protection schemes are ongoing research topics.
Henrik Johansson, Qianli Xing, Nathaniel Taylor, Xiongfei Wang   +3 more
openaire   +2 more sources

Scalable Polyelectrolyte Complex‐Based Sorbent With Hourly Sorption−Desorption Cycles for Multicyclic Atmospheric Water Harvesting in Arid Environments

Advanced Functional Materials, EarlyView.
A polyelectrolyte complex‐based sorbent is produced by scalable, environmentally benign aqueous phase inversion. Its porous, LiCl‐ and GO‐integrated architecture enables hourly adsorption−desorption cycles at low relative humidity (RH < 30%). A large‐scale prototype achieves multicyclic, solar‐driven atmospheric water harvesting of 1.37 L kg−1 day−1 ...
Seung‐Hwan Oh, Incheol Heo, Won Cheol Yoo, Soo‐Hyung Choi   +3 more
wiley   +1 more source

Nonlinear Modeling and Identification of Doubly Fed Induction Machines Under Varying Grid Conditions

IEEE Open Journal of the Industrial Electronics Society
Historically, grid-connected synchronous machines have formed the grid voltage and frequency. Today, the high penetration of inverter-based resources poses challenges to grid stability, as conventional grid-following control methods do not provide grid ...
Andre Thommessen, Christoph M. Hackl
doaj   +1 more source

Power Hardware-in-the-Loop (PHIL): A Review to Advance Smart Inverter-Based Grid-Edge Solutions

Energies, 2023
Over the past decade, the world’s electrical grid infrastructure has experienced rapid growth in the integration of grid-edge inverter-based distributed energy resources (DERs).
Annette von Jouanne, Emmanuel Agamloh, Alex Yokochi   +2 more
doaj   +1 more source