Results 11 to 20 of about 2,213,154 (301)

Transient stability enhancement control through VSC-HVDC system and fast frequency response resources

open access: yesFrontiers in Energy Research, 2023
In addition to the traditional long-distance and bulk power transmission application, the HVDC system can bring additional benefits to the system by providing ancillary service.
Qingshen Xu   +3 more
doaj   +1 more source

Frequency Response Enhancement of Photonic Sampling Based on Cavity-Less Ultra-Short Optical Pulse Source

open access: yesIEEE Photonics Journal, 2022
The influence of the residual pulse chirp and the spectrum shape from a cavity-less optical pulse source on the sampling performance is theoretically analyzed.
Zhengkai Li   +9 more
doaj   +1 more source

Optimal control method of frequency in diesel generator based islanded microgrid

open access: yes电力工程技术, 2023
In order to solve the problems such as significant frequency fluctuation and slow dynamic response under load disturbance in islanded microgrid which has a diesel generator (DG) as the primary source, an auxiliary frequency regulation method is proposed ...
HONG Haohao   +5 more
doaj   +1 more source

Frequency response of the construction of a large-span building with a cylindrical-and-slab roof†

open access: yesStructural Mechanics of Engineering Constructions and Buildings, 2023
Relevance of the research. Numerical studies of structural frequency response of a large-span building with cylindrical-and-slab roof as a large mechanical system were carried out. Finite element model No. 1 “Superstructure-Fixed-end” .
Elvira R. Kuzhakhmetova   +1 more
doaj   +1 more source

Flexible torque control for wind turbines considering frequency response under wind speed crossing region

open access: yesFrontiers in Energy Research, 2023
The operational range of a wind turbine is typically divided into two regions based on wind speed: below and above the rated wind speed. The turbine switches between these two regions depending on the prevailing wind speed; however, during the transition,
Yingwei Wang   +3 more
doaj   +1 more source

The relationship between target strength frequency response and vertical swim velocity: a new approach for fish discrimination

open access: yesAquatic Living Resources, 2021
In-situ identification of fish species using acoustic methods is a key issue for fisheries research and ecological applications. We propose a novel approach to fish discrimination based on the relationship between target strength frequency response (TS(f)
Homma Hikaru, Ostrovsky Ilia
doaj   +1 more source

RoCoF-Minimizing H₂ Norm Control Strategy for Multi-Wind Turbine Synthetic Inertia

open access: yesIEEE Access, 2022
The reduction in system inertia under the penetration of power electronic-interfaced generation has fostered various proposals on wind synthetic inertia.
Esteban Riquelme   +2 more
doaj   +1 more source

Research on the Frequency Response and Dynamic Range of the Quadrature Fiber Optic Fabry–Perot Cavity Microphone Based on the Differential Cross Multiplication Demodulation Algorithm

open access: yesSensors, 2021
A quadrature fiber optic Fabry–Perot cavity microphone based on a differential cross multiplication algorithm consists of a pair of fibers and a membrane.
Baokai Ren   +6 more
doaj   +1 more source

An Approximate Transfer Function Model for a Double-Pipe Counter-Flow Heat Exchanger

open access: yesEnergies, 2021
The transfer functions G(s) for different types of heat exchangers obtained from their partial differential equations usually contain some irrational components which reflect quite well their spatio-temporal dynamic properties. However, such a relatively
Krzysztof Bartecki
doaj   +1 more source

Isola in a linear one‐degree‐of‐freedom feedback system with actuator rate saturation

open access: yesInternational Journal of Mechanical System Dynamics, 2023
This short communication uses numerical continuation to highlight the existence of an isola in a simple one‐degree‐of‐freedom harmonically forced feedback system with actuator rate limiting as its only nonlinear element.
Duc H. Nguyen   +2 more
doaj   +1 more source

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