Results 91 to 100 of about 504,263 (307)

A modular multi-level DC-DC converter for HVDC grids

IECON 2016 - 42nd Annual Conference of the IEEE Industrial Electronics Society, 2016
A double-T DC-DC modular multilevel converter (DC-DC-MMC) topology for high-voltage dc (HVdc) applications is presented in this paper. The topology is intended to interconnect large power dc grids with different voltage levels or to control the power flow in meshed dc grids. A two level control hierarchy is used to regulate the dc voltage of each cell.
Vidal-Albalate, Ricardo, Barahona, Javier, Soto-Sanchez, Diego, Belenguer, Enerique, Pena, Ruben S, Blasco-Gimenez, Ramon, de la Parra, Hector Zelaya   +6 more
openaire   +3 more sources

Optoelectronic Control of Redox Dynamics in POM Memristors for Noise‐Resilient Speech and Hardware‐Level Motion Recognition

Advanced Functional Materials, EarlyView.
Optoelectronic control of redox‐active polyoxometalate clusters in polymer matrices yields hybrid memristors with switchable volatile and non‐volatile modes, enabling reservoir‐type in‐sensor optical preprocessing and stable multilevel synapses for multimodal neuromorphic computing, including noise‐tolerant audiovisual keyword recognition and hardware ...
Xiangyu Ma, Ziyu Lv, Guohua Zhang, Zhongyue Xu, Yongbiao Zhai, Haiming Huang, Qiyan Zhang, Xiaojin Zhao, Yan Wang, Ye Zhou, Ziyu Xiong, Guanglong Ding, Wentao Xu, Su‐Ting Han   +13 more
wiley   +1 more source

Desain Konverter Pada Sistem Hybrid PV-Grid Berbasiskan Mikrokontroler PIC16F877 [PDF]

, 2011
Hybrid PV-Grid menggabungkan dua sumber energi listrik yaitu grid (PLN) dan PV (Photovoltaics). Tegangan dari sumber PV sebesar 48 volt dc dinaikan dan diubah ke tegangan ac 280 volt dengan menggunakan konverter.
Tarmizi, T. (Tarmizi)
core  

Revealing the Hidden Role of Cd in p‐Type Mg3Sb2: Enhanced Thermoelectric Performance by Grain Boundary Segregation Engineering

Advanced Functional Materials, EarlyView.
The hidden role of Cd segregation at grain boundaries is revealed in p‐type Mg3Sb2 by atom probe tomography and other advanced characterizations. Grain boundary Cd enrichment suppresses the SbMg+ hole‐killer formation and lowers potential barriers, enhancing electrical conductivity.
Zhou Li, Deming Dong, Xiaoyu Yang, Jun Qian, Mengruizhe Kong, Han Wan, Ni Ma, Wei Bai, Pengfei Nan, Binghui Ge, Jiming Song, G. Jeffrey Snyder, Yuan Yu   +12 more
wiley   +1 more source

Impedance-Based Stability Analysis of a Low-Inertia AC Grid Connected to a DC Grid by a VSC With Virtual Inertia Controllers

IEEE Open Journal of Power Electronics
The dynamics and performance of low-inertia ac grids with frequency support (e.g., droop and virtual inertia controls) have been investigated thoroughly.
Ahmed M.E.I. Mohamad, Hassanien Ramadan A. Mohamed, Yasser Abdel-Rady I. Mohamed   +2 more
doaj   +1 more source

Investigation of Impacts of Wind Source Dynamics and Stability Options in DC Power Systems With Wind Energy Conversion Systems

IEEE Access, 2020
Wind energy conversion systems (WECSs), based on permanent magnet synchronous generators (PMSGs), are becoming common sources in dc grids. However, in previous dc grids integration studies, turbine-generator mechanical dynamics are represented by a ...
Ahmed M. I. Mohamad, Mohammadreza Fakhari Moghaddam Arani, Yasser Abdel-Rady I. Mohamed   +2 more
doaj   +1 more source

Bar-grid oscillators [PDF]

, 1990
Grid oscillators are an attractive way of obtaining high power levels from the solid-state devices, since potentially the output powers of thousands of individual devices can be combined.
Kim, Moonil, Popović, Zoya Basta, Potter, Kent A., Rutledge, David B., Weikle, Robert M., II   +4 more
core   +1 more source

Membrane Vesicles from Lacticaseibacillus Casei BL23 Exhibit Antimicrobial Activity Against Escherichia coli and Immunostimulatory Effects on Human Peripheral Blood Mononuclear Cells

Advanced Healthcare Materials, EarlyView.
Membrane vesicles derived from the probiotic Lacticaseibacillus casei BL23 demonstrate antimicrobial properties against Escherichia coli and a potential biological effect in improving the overall survival of C. elegans infected with Pseudomonas aeruginosa. These vesicles stimulated immune responses in primary cells without causing toxicity. Our results
Cecilia L. D'Antoni, Leila Pourtalebi Jahromi, Lorenzo Sana, Ana Paula Domínguez Rubio, Maja Dorfner, Jennifer Munkert, Heike Danzer, Philipp Arnold, Mikhail Lebedev, Esther Zanin, Oscar E. Pérez, Gregor Fuhrmann   +11 more
wiley   +1 more source

Spherical Skin Model: Stratified Co‐Culture of Fibroblasts and Keratinocytes on Spherical Beads Toward Compound Screening

Advanced Healthcare Materials, EarlyView.
Models of the human skin must combine the relevant biological contents and suitable biomaterials with the correct spatial organization. Performing compound screening on such in vitro models also requires fast and reproducible production methods of the models.
Elisa Lenzi, Nadia Vertti‐Quintero, Julien Husson, Anne‐Laure Bulteau, Carine Nizard, Karl Pays, Sébastien Sart, Charles N. Baroud   +7 more
wiley   +1 more source

A new grid side inertia support control method for cascaded power converters in Bi-directional EV chargers

Frontiers in Energy Research
To provide inertia support to the power grid, the grid side frontend DC/AC inverter of the bidirectional electric vehicle (EV) charging facilities can use the virtual synchronous generator (VSG) control in its grid-side DC/AC converter.
Yan Tian, Bo Huang, Jian Fang, Wei Chen, Yu Xin, Haobo Lin, Xiang Lin   +6 more
doaj   +1 more source