Results 51 to 60 of about 9,773 (294)

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

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

An MPC Approach for Grid-Forming Inverters: Theory and Experiment

Energies, 2020
Microgrids (MGs) interest is growing very fast due to the environment urgency and their capability to integrate renewable energy in a flexible way.
Alessandro Labella, Filip Filipovic, Milutin Petronijevic, Andrea Bonfiglio, Renato Procopio   +4 more
doaj   +1 more source

Active Power Coordination for a Large Population of Grid-Forming and Grid-Following Inverters Based on Mean Field Games Theory

IEEE Access, 2023
In a grid with a high proportion of renewable energy, the coordinated control between grid-forming (GFM) and grid-following (GFL) inverters becomes crucial for maintaining aspects such as frequency and voltage regulation.
Nuo Xu, Xiaodong Chu, Hua Ye
doaj   +1 more source

Steady state evaluation of distributed secondary frequency control strategies for microgrids in the presence of clock drifts [PDF]

, 2017
Secondary frequency control, i.e., the task of restoring the network frequency to its nominal value following a disturbance, is an important control objective in microgrids.
Hans, CA, Kral, T, Krishna, A, Raisch, J, Schiffer, J   +4 more
core   +1 more source

Copper‐Based Crystalline‐Metallic Glass Composite Thin Films: A Novel Material with Enhanced Strength and Thermally Stable Nanotwins

Advanced Functional Materials, EarlyView.
A Cu‐based crystal‐glass composite with high‐density twins is identified by a fast screening technique using combinatorial sputtering together with XRD and nanoindentation mapping. This bamboo‐like structure demonstrates homogenous plastic flow and retains high strength during in situ high temperature tests, up to 1 GPa at 550°C, owing to those ...
Chunhua Tian, Amit Sharma, Krzysztof Wieczerzak, Alexander Groetsch, Manish Jain, Nicolò Maria della Ventura, Remo Widmer, Fedor F. Klimashin, Johann Michler, Jakob Schwiedrzik, Xavier Maeder   +10 more
wiley   +1 more source

Stability and Resynchronization of Current-Constrained VOC-Based GFM Inverters Through Revisiting Traditional Power System Criteria

IEEE Open Journal of Power Electronics
As inverter-based resources and renewable energy systems continue to increase their penetration in modern power grids, maintaining system stability has become a critical challenge.
Kazuki Watanabe, Daisuke Iioka
doaj   +1 more source

On Stability of a Distributed Averaging PI Frequency and Active Power Controlled Differential-Algebraic Power System Model [PDF]

, 2017
We consider the problems of stability, frequency restoration and optimal steady-state resource allocation in a heterogeneous and structure-preserving differential-algebraic equation (DAE) power system model.
Dörfler, F, Schiffer, JF
core   +1 more source

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

Grid-forming control for high-power inverters

, 2022
La crisis medioambiental actual está potenciando el aumento de la demanda de fuentes renovables y sistemas de almacenamiento. La conexión de estas unidades de generación, que se realiza a través de inversores de alta potencia para minimizar costes, está causando el reemplazo completo de los generadores síncronos, dando lugar a que aparezcan más ...
openaire   +3 more sources