Results 31 to 40 of about 8,210 (263)

Virtual inertia analysis of photovoltaic energy storage systems based on reduced-order model

Frontiers in Energy Research, 2023
The problem of non-ideal inertia of the photovoltaic energy storage system (PVESS) may occur due to unreasonable voltage control parameters. In response to this issue, this paper establishes an equivalent reduced-order model (EROM) for PVESS.
Guanyang Li, Junfei Wang, Xuanlin Wang, Li Zhang   +3 more
doaj   +1 more source

Inertia estimation of new energy power system with virtual inertia response of wind power

电力工程技术, 2023
The accurate estimation of inertia is the premise of analyzing the security and stability of the system frequency, but the existing methods can not quantitatively evaluate the effect of virtual inertia on the equivalent inertia of the power system.
LI Shichun, SONG Qiushuang, XUE Zhenyao, DENG Rui   +3 more
doaj   +1 more source

Rethinking plastic waste: innovations in enzymatic breakdown of oil‐based polyesters and bioplastics

FEBS Open Bio, EarlyView.
Plastic pollution remains a critical environmental challenge, and current mechanical and chemical recycling methods are insufficient to achieve a fully circular economy. This review highlights recent breakthroughs in the enzymatic depolymerization of both oil‐derived polyesters and bioplastics, including high‐throughput protein engineering, de novo ...
Elena Rosini, Nicolò Antonelli, Gianluca Molla   +2 more
wiley   +1 more source

Virtual Inertia Implemented by Quasi-Z-Source Power Converter for Distributed Power System

Energies, 2023
This paper proposes a novel virtual inertia control strategy for distributed power systems with high penetration of renewable energy sources. The strategy uses a quasi-Z-source power converter to emulate the inertia response of a synchronous generator by
Yitao Liu, Hongle Chen, Runqiu Fang
doaj   +1 more source

‘Oxygen Bound to Magnesium’ as High Voltage Redox Center Causes Sloping of the Potential Profile in Mg‐Doped Layered Oxides for Na‐Ion Batteries

Advanced Functional Materials, EarlyView.
Na‐ion batteries ‐ Impact of doping on the oxygen redox: The sloping potential of NaMg0.1Ni0.4Mn0.5O2 above 4.0 V is caused by a new redox center (arising from the ‘O bound to Mg’), having a higher potential but being more irreversible compared to the ‘O bound to Ni’.
Yongchun Li, Konstantin Köster, Katherine A. Mazzio, Yanan Sun, Annica I. Freytag, Deniz Wong, Christian Schulz, Götz Schuck, Volodymyr Baran, Alba San Jose Mendez, Marcin Zając, Payam Kaghazchi, Philipp Adelhelm   +12 more
wiley   +1 more source

Neural Network-Based Coordinated Virtual Inertia Allocation Method for Multi-Region Distribution Systems

Applied Sciences
Virtual inertia is a measure of the capability of distributed sources and loads within power supply units to resist system frequency variations through additional control strategies applied to converters.
Heng Liu, Jingtao Zhao, Zhi Wu, Shu Zheng   +3 more
doaj   +1 more source

Providing Virtual Inertia Through Power Electronics

, 2022
VSC-HVDC (voltage source converter based HVDC) system with its inherent merits for renewable energy integration has captured increasing research attentions. However, compared with AC systems dominated by synchronous generators (SGs), VSC-HVDC systems with general vector control cannot provide inertia for the grid due to lack of kinetic energy.
openaire   +2 more sources

Bioprinting Organs—Science or Fiction?—A Review From Students to Students

Advanced Healthcare Materials, EarlyView.
Bioprinting artificial organs has the potential to revolutionize the medical field. This is a comprehensive review of the bioprinting workflow delving into the latest advancements in bioinks, materials and bioprinting techniques, exploring the critical stages of tissue maturation and functionality.
Nicoletta Murenu, Camilla Mussoni, Mateo S. Andrade Mier, Paula Buettner, Nathaly Chicaiza‐Cabezas, Yi‐Yu Robin Dai, Jessica Faber, Maren Fiedler, Zan Lamberger, Xuen Jen Ng, Vanessa Moessler, Anna Rederer, Jonas Roeder, Sabrina Stecher, Katinka Theis, Jeanette Weigelt, Silvia Budday, Gregor Lang, Natascha Schaefer   +18 more
wiley   +1 more source

A virtual inertia allocation method based on grey wolf optimization

Zhejiang dianli
To address the optimal inertia allocation after replacing the moment of inertia with virtual inertia in power systems， a method for virtual inertia allocation based on grey wolf optimization （GWO） is proposed.
NAN Dongliang, DUAN Yu, ZHANG Lu, WU Genzhu, ZHU Zimin   +4 more
doaj   +1 more source

Frequency regulation in adaptive virtual inertia and power reserve control with high PV penetration by probabilistic forecasting

Frontiers in Energy Research, 2022
The large-scale deployment of sustainable energy sources has become a mandatory goal to reduce pollution from electricity production. As photovoltaic (PV) plants replace conventional synchronous generators (SGs), their significant inherent rotational ...
Jiaming Chang, Yang Du, Xiaoyang Chen, Enggee Lim, Huiqing Wen, Xingshuo Li, Lin Jiang   +6 more
doaj   +1 more source