Results 41 to 50 of about 24,313,007 (383)

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

Frequency control of an island microgrid using reset control method in the presence of renewable sources and parametric uncertainty

Systems Science & Control Engineering, 2020
In recent years, several powerful control methods have been proposed. One of these methods is the reset control, simple nonlinear control technique very effective for plants subjected to fundamental design limitations, and this paper suggests its ...
Tohid Banki, Faramarz Faghihi, Soodabeh Soleymani   +2 more
doaj   +1 more source

High-Performance Robust Controller Design of Plug-In Hybrid Electric Vehicle for Frequency Regulation of Smart Grid Using Linear Matrix Inequality Approach

IEEE Access, 2019
This paper proposes a high-performance and robust linear quadratic regulator-proportional integral derivative (LQR-PID) controller for frequency regulation in a two-area interconnected smart grid with a population of plug-in hybrid electric vehicles ...
Sajal Kumar Das, Mizanur Rahman, Sanjoy Kumar Paul, Maniza Armin, Priyo Nath Roy, Norottom Paul   +5 more
doaj   +1 more source

Controlling the oscillator frequency synchronization by a low-frequency drive [PDF]

2017 47th European Microwave Conference (EuMC), 2017
4 pages, 7 ...
Dmytro M. Vavriv, Klaus Schuenemann, Anastasiia Y. Nimets   +2 more
openaire   +3 more sources

Control of Frequency Combs with Passive Resonators

Sensors, 2023
Tailored optical frequency combs are generated by nesting passive etalons within mode-locked oscillators. In this work, the oscillator generates a comb of 6.8 GHz with 106 MHz side-bands. This tailored comb results from the self-synchronized locking of two cavities with precision optical frequency tuning.
James Hendrie, Ning Hsu, Jean-Claude Diels   +2 more
openaire   +3 more sources

Optimal sizing and location of vanadium redox flow battery in a power system with high wind power generation

The Journal of Engineering, 2019
This paper proposes a new approach to determine the optimal sizing and location of a vanadium redox flow battery (VRFB) that provides load frequency control services in a power system, with the lowest cost for the utility grid.
Maximiliano Martinez, Marcelo Gustavo Molina, Pedro Enrique Mercado   +2 more
doaj   +1 more source

Network topology drives population temporal variability in experimental habitat networks

Population Ecology, EarlyView.
Habitat patches connected by dispersal pathways form habitat networks. We explored how network topology affects population outcomes in laboratory experiments using a model species (Daphnia carinata). Central habitat nodes in complex lattice networks exhibited lower temporal variability in population sizes, suggesting they support more stable ...
Yiwen Xu, J. Angus Webb, William D. Bovill, Elise L. King   +3 more
wiley   +1 more source

Frequency and Voltage Control of an Inverter-Based DG Using Adaptive Fuzzy-Sliding Mode Controller [PDF]

Journal of Electrical and Computer Engineering Innovations, 2019
Background and Objectives: The microgrid voltage and frequency are strongly affected by active and reactive load fluctuations. Load change in microgrid may result in the lack of balance among generation and consumption and as a result change in output ...
E. Limuchi, A. Taher, B. Ganji
doaj   +1 more source

Geographic variation in walking activity in the red flour beetle Tribolium castaneum

Population Ecology, EarlyView.
This study examined whether there is geographic variation in field populations, focusing on the moving activity in the red flour beetle Tribolium castaneum. Results showed significant differences in moving activity among field populations but no correlation with latitude or meteorological factors.
Kentarou Matsumura
wiley   +1 more source

High Proton Conductivity in xCuO/(1‐x)CeO2 Electrolytes Induced by CuO Self‐Nucleation and Electron‐Ion Coupling

Advanced Science
Operating within the 300–500 °C range, low‐temperature solid oxide fuel cells (LT‐SOFCs) enable efficient and sustainable energy conversion, addressing the limitations of conventional high‐temperature SOFCs.
Muhammad Shahid Sharif, Sajid Rauf, Zuhra Tayyab, Muhammad Ahsan Masood, Yibin Tian, Muhammad Ali Kamran Yousaf Shah, Abdullah N. Alodhayb, Rizwan Raza, Bin Zhu   +8 more
doaj   +1 more source