Results 31 to 40 of about 2,595,447 (316)

Amidst centralized and distributed frequency control in power systems

, 2016
We propose a novel frequency control approach in between centralized and distributed architectures, that is a generalized continuous-time feedback control version of the dual decomposition optimization method.
GRAMMATICO, SERGIO, Florian Dorfler, Sergio Grammatico, Dörfler, F., Grammatico, S, Dörfler, Florian, Dörfler, F, Grammatico, S.   +7 more
core   +1 more source

Design of a Fixed IF Down-Conversion Double-Balanced Mixer for UHF Band Applications

Sensors
This paper presents a new SiGe HBT-based high dynamic range double-balanced down-conversion differential mixer. Operating within the 0.5 GHz to 1.8 GHz range, the suggested mixer is appropriate for a variety of applications, such as cellular base ...
Trusha Kared, Helga Silaghi, Matthias Rudolph, Andrei Silaghi, Ulrich L. Rohde   +4 more
doaj   +1 more source

Fast frequency response for effective frequency control in power systems with low inertia

The Journal of Engineering, 2019
The increasing penetration of renewable generation has led to the decrease of power systems’ overall inertia, which introduces significant challenges to frequency stability.
Qiteng Hong, Marcel Nedd, Seán Norris, Ibrahim Abdulhadi, Mazaher Karimi, Vladimir Terzija, Benjamin Marshall, Keith Bell, Campbell Booth   +8 more
doaj   +1 more source

Grid Impact of Frequency Regulation Provided by V2Gs Aggregated at HV, MV, and LV Level

IEEE Access, 2023
Vehicle-to-Grid chargers (V2Gs) are currently considered a key component for supporting future power systems in primary and especially secondary frequency regulation.
Marta Bernal-Sancho, Roberto Rocca, Gregorio Fernandez-Aznar, Maria Paz Comech, Noemi Galan-Hernandez   +4 more
doaj   +1 more source

Frequency Modulation Control of an FMCW LiDAR Using a Frequency-to-Voltage Converter

Sensors, 2023
An FMCW LiDAR (frequency-modulated continuous-wave light detection and ranging) is a sensor that can measure distance using optical interference frequency (fb).
Jubong Lee, Jinseo Hong, Kyihwan Park
doaj   +1 more source

Carcinomas and Carcinoid Tumors of the Lungs and Bronchi in Children and Adolescents: The EXPeRT Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Primary lung carcinomas and bronchial carcinoid tumors (BC) are very rare malignancies in childhood. While typical BC and mucoepidermoid carcinomas are mostly low‐grade, localized tumors with a more favorable prognosis than in adults, necessitating avoidance of overtreatment, adenocarcinomas of the lung are often diagnosed at advanced disease ...
Michael Abele, Calogero Virgone, Michaela Kuhlen, Sabine Irtan, Yves Reguerre, Malgorzata Krawczyk, Ewa Bien, Tal Ben‐Ami, Maja Cesen, Ricardo Lopez‐Almaraz, Andrea Ferrari, Gianni Bisogno, Dominik T. Schneider, Abbas Agaimy, Constantin Lapa, Hubert Ducou le Pointe, Rainer Claus, Catherine Daniel, Ines B. Brecht, Daniel Orbach   +19 more
wiley   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen, Calogero Virgone, Antje Redlich, Michael Abele, Ricardo Lopez‐Almaraz, Tal Ben‐Ami, Ewa Bien, Gianni Bisogno, Maja Mazic Cesen, Andrea Ferrari, Malgorzata A. Krawczyk, Yves Reguerre, Dominik T. Schneider, Ines B. Brecht, Charlotte Rigaud, Bilgehan Yalcin, Rainer Claus, Christian Vokuhl, Constantin Lapa, Jörg Fuchs, Segolene Hescot, Thomas Walter, Julien Hadoux, Daniel Orbach   +23 more
wiley   +1 more source

Multivariable Repetitive-predictive Controllers using Frequency Decomposition [PDF]

, 2012
Repetitive control is a methodology for the tracking of a periodic reference signal. This paper develops a new approach to repetitive control systems design using receding horizon control with frequency decomposition of the reference signal.
Rogers, E, Chai, S, Wang, L, Freeman, C T, Shan Chai, Liuping Wang, Eric Rogers, Chris T. Freeman   +7 more
core   +1 more source

Low-loss phase change materials-based reprogrammable non-volatile 1 × 2 switch on integrated metasurfaces

iScience
Summary: With their profound ability to manipulate electromagnetic waves, metasurfaces are at the forefront of a revolution in modern optics and photonics. Despite significant advancements, the quest for programmable and controllable metasurfaces remains
Muhammad Shemyal Nisar, Naeem Ullah, Shahid Iqbal, Sai-Wai Wong, Zia Ullah Khan, Xiaoqing Tian, Yibin Tian   +6 more
doaj   +1 more source

Control of Variable Speed Wind Turbines with Doubly Fed Asynchronous Generators for Stand-Alone Applications

Energies, 2017
This paper addresses the design and implementation of a novel control of a variable speed wind turbine with doubly fed induction generator for stand-alone applications.
Santiago Arnaltes, Jose Luis Rodriguez-Amenedo, Miguel E. Montilla-DJesus   +2 more
doaj   +1 more source