Results 101 to 110 of about 112,832 (334)

Virtual inertia for variable speed wind turbines

Wind Energy, 2012
ABSTRACTInertia provision for frequency control is among the ancillary services that different national grid codes will likely require to be provided by future wind turbines. The aim of this paper is analysing how the inertia response support from a variable speed wind turbine (VSWT) to the primary frequency control of a power system can be enhanced ...
Lorenzo Zeni, Andreas Jakob Rudolph, Janus Münster‐Swendsen, Ioannis Margaris, Anca Daniela Hansen, Poul Sørensen   +5 more
openaire   +1 more source

Colorectal Cancer Cell's Weapon: RNF32 Engages SPP1+ Macrophages to Foster Liver Metastasis, Targeted by Indole‐3‐Acetic Acid

Advanced Science, EarlyView.
Cytoplasmic RNF32 fuels CRC liver metastasis by degrading GSK3β, which stabilizes β‐catenin and activates Wnt/EMT. Moreover, RNF32 rewires the metastatic niche: it depletes CD8+/CD4+ T and NK cells while recruiting SPP1+ macrophages (which boost tumor stemness via CD44), fibroblasts, and immunosuppressive monocytes to aid colonization.
Hongyu Wang, Shipeng Dai, Yuchen Xie, Pengyu Chen, Yue Chai, Chongyu Wang, Xueying Huang, Xiao Dong, Junfeng Shi, Yongxiang Xia, Xiaofeng Qian, Weiwei Tang, Yichan Zhou   +12 more
wiley   +1 more source

Regional inertia estimation and virtual inertia configuration of new energy connected power system

电力工程技术
The increasing integration of renewable energy sources has caused spatially and temporally uneven inertia distribution in power systems. This paper proposes a regional inertia estimation and virtual inertia configuration method using dynamic mode ...
Renjie WU, Qin JIANG, Baohong LI, Tianqi LIU   +3 more
doaj   +1 more source

Virtual Inertia Planning for Enhancing Grid Stability in Low‐Inertia Systems

IET Energy Systems Integration
ABSTRACT The global power grid is undergoing a significant transition with the increasing integration of renewable energy sources (RESs). This shift, characterised by a decline in conventional synchronous generators and a rise in inverter‐based RESs, has resulted in reduced grid inertia, posing substantial challenges to frequency ...
S. Saha, M. I. Saleem, T. K. Roy, Amanullah M. T. Oo   +3 more
openaire   +1 more source

Enhanced Responsivity, Accuracy, and Stability of Aerosol Jet Printing via Mechanical Switching Valve Assisted Internal Shuttering

Advanced Science, EarlyView.
This work demonstrates ultra‐high ON‐OFF responsivity of AJP by mechanical switching valve assisted shuttering. The jet relaxation and ON‐OFF delay are substantially eliminated from greater than 35 s, maintaining patterning quality independent of the variations of printing parameters, permitting excellent process stability and universality.
Jinhang Wang, Li Meng, Shuhuan Zhang, Pan Chen, Kaiwen Wei, Beibei Zhu, Xiaoyan Zeng   +6 more
wiley   +1 more source

An Adaptive Virtual Inertial Control Strategy for DC Distribution Networks

Energies
The DC distribution network is a low-inertia system, which is very sensitive to load disturbance, system failure, and other factors. By adding virtual capacitance to the converter connected to the power supply, the virtual inertia of the DC power grid ...
Junhua Xu, Weixun Liu, Guopeng He
doaj   +1 more source

Laser‐Architected Shape‐Configurable Vertical Graphene Thermoacoustic Loudspeakers for 3D Acoustic Emission

Advanced Science, EarlyView.
A dual‐laser‐architected vertical graphene film enables high‐performance, morphologically reconfigurable thermoacoustic loudspeakers.The vertically aligned graphene structures combine efficient heat dissipation, thickness‐independent SPL, and kirigami‐driven 3D transformations, offering shape‐programmable, stretchable, and omnidirectional acoustic ...
TaeGyeong Lim, Se Young Lee, Dohyung Lee, Baek Heon Lim, Jeongbo Lee, Wooseok Song, Sun Sook Lee, Sungwoong Park, Jin Kim, Soonmin Yim, Ki‐Seok An, Saewon Kang   +11 more
wiley   +1 more source

Frequency Response Analysis of a Single-Area Power System with a Modified LFC Model Considering Demand Response and Virtual Inertia

Energies, 2018
The modern electric power system is foreseen to have increased penetration of controllable loads under demand response programs and renewable energy resources coupled with energy storage systems which can provide virtual inertia.
Muhammad Saeed Uz Zaman, Syed Basit Ali Bukhari, Khalid Mousa Hazazi, Zunaib Maqsood Haider, Raza Haider, Chul-Hwan Kim   +5 more
doaj   +1 more source

Design Matters: How Cell Architecture Shapes the Performance, Cost, and Environmental Impact of Battery Technologies

Advanced Energy Materials, EarlyView.
This study introduces a multidimensional framework integrating electrical performance, cost, and life cycle assessment for 140 real and virtual battery cells. Results show that LFP offers low emissions and costs, sodium‐ion excels in resource efficiency, and pouch housings and higher energy densities effectively reduce environmental burdens.
Nicolas Peter Kaiser, Florian Hölting, Duc Minh Nguyen, Martin Florian Börner, Mark Junker, Moritz Fabian Schütte, Florian Ringbeck, Dirk Uwe Sauer   +7 more
wiley   +1 more source

Virtual inertia control to active support of the variable-speed wind turbine in variable frequency limit time

Frontiers in Energy Research
Constraining the virtual inertia of variable-speed wind turbines within the variable frequency limit time will be the key to improving the wind power’s reliability in actively supporting the system frequency.
Gu Tingyun, Zhang Houyi, Li Bowen, Mao Junyi, Fan Qiang, Xu Yutao, Feng Qihui   +6 more
doaj   +1 more source