Results 51 to 60 of about 18,994,398 (235)

Synthetic inertia versus fast frequency response: a definition

open access: yes, 2018
This study discusses synthetic inertia from the perspective of a transmission system operator and compares it to fast frequency response based on frequency deviation.
R. Eriksson, N. Modig, K. Elkington
semanticscholar   +1 more source

Frequency response and tunability of grating-assisted directional couplers [PDF]

open access: yes, 1991
The spectral properties of grating-assisted directional couplers are studied using an improved coupled mode formulation. Key parameters for the design of these structures, such as the grating period, the coupling length, and other structural parameters ...
Griffel, Giora, Yariv, Amnon
core   +1 more source

Optimizing DER Participation in Inertial and Primary-Frequency Response

open access: yesIEEE Transactions on Power Systems, 2018
This paper develops an approach to enable the optimal participation of distributed energy resources (DERs) in inertial- and primary-frequency response alongside conventional synchronous generators.
Swaroop S. Guggilam   +4 more
semanticscholar   +1 more source

Verification of Utility-Scale Solar Photovoltaic Plant Models for Dynamic Studies of Transmission Networks

open access: yesEnergies, 2020
In recent years, there has been a growing need for accurate models that describe the dynamics of renewable energy sources, especially photovoltaic sources and wind turbines.
Ram Machlev   +5 more
doaj   +1 more source

General frequency response program calculates frequency response of system, open at any specified element [PDF]

open access: yes, 1967
The general frequency response program provides the frequency response of any linear feedback control system including the open loop control system. The system characteristic matrix, obtained from the Laplace transformations of the dynamic and control ...
Prosch, J.
core   +1 more source

Characterization and Direct Modulation of a Multi-Section PIC Suited for Short Reach Optical Communication Systems

open access: yesPhotonics, 2020
A multi-section active photonic integrated circuit (PIC) is characterized in detail to gauge its suitability as a transmitter for short reach applications.
Mohab N. Hammad   +6 more
doaj   +1 more source

Frequency response services designed for energy storage

open access: yes, 2017
Energy Storage Systems (ESS) are expected to play a significant role in regulating the frequency of future electric power systems. Increased penetration of renewable generation, and reduction in the inertia provided by large synchronous generators, are ...
D. Greenwood   +6 more
semanticscholar   +1 more source

Frequency response of a beam-like structure to moving harmonic forces

open access: yesVietnam Journal of Mechanics, 2016
The spectral approach is employed for spectral analysis of a beam subjected to an arbitrary force traveling along the beam with constant speed. First, an expression for exact frequency response of a beam subjected to moving arbitrary force and general ...
Nguyen Tien Khiem, Phi Thi Hang
doaj   +1 more source

Spatio-temporal generalised frequency response functions [PDF]

open access: yes, 2010
The concept of generalised frequency response functions (GFRFs), which were developed for nonlinear system identification and analysis, is extended to continuous spatio-temporal dynamical systems normally described by partial differential equations (PDEs)
Billings, S.A.   +4 more
core  

Parasitic-free measurement of the fundamental frequency response of a semiconductor laser by active-layer photomixing [PDF]

open access: yes, 1988
We report the measurement of the fundamental (intrinsic) frequency response of a GaAs semiconductor laser to 12 GHz by directly photomixing two optical sources in the active region of the laser.
Newkirk, Michael A., Vahala, Kerry J.
core   +1 more source

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