Results 61 to 70 of about 18,994,398 (235)

Fast Frequency Response From Offshore Multiterminal VSC–HVDC Schemes

open access: yesIEEE Transactions on Power Delivery, 2017
This paper analyzes the frequency support characteristics of multiterminal voltage source converter HVdc (VSC–HVdc) (MTDC) schemes using the energy transferred from wind turbine rotating mass and other ac systems. An alternative coordinated control (ACC)
O. Adeuyi   +3 more
semanticscholar   +1 more source

A novel method for separability of signal components to estimate radiation from a high-frequency subsystem [PDF]

open access: yesArchives of Electrical Engineering, 2019
Specific requirements are designed and implemented in electronic and telecommunication systems for received signals, especially high-frequency ones, to examine and control the signal radiation.
Milad Daneshvar   +2 more
doaj   +1 more source

Primary frequency response from hydrogen-based bidirectional vector coupling storage: modelling and demonstration using power-hardware-in-the-loop simulation

open access: yesFrontiers in Energy Research, 2023
To meet reduction targets for carbon emissions and improve the flexibility and security of the energy supply, future energy networks will require enhanced energy vector coupling in addition to the generation of energy from renewable sources.
Adib Allahham   +4 more
doaj   +1 more source

Fast-response frequency-to-analog converter [PDF]

open access: yes, 1967
Frequency-to-analog converter has a fast response time and a low ripple. The circuit uses a frequency-to-pulse converter which provides two pulse trains, both at the same frequency as that of the input signal, but with a 10 microsecond difference between
Hagihara, F. S.
core   +1 more source

Quantum-State Purity of Heralded Single Photons Produced from Frequency-Anti-Correlated Biphotons

open access: yes, 2015
We analyze the quantum-state purity of heralded single photons produced from frequency-anti-correlated biphotons. We find that the quantum-state purity in time-frequency domain depends strongly on the response time uncertainty of the trigger-photon ...
Du, Shengwang
core   +2 more sources

Advanced Control of Thermostatic Loads for Rapid Frequency Response in Great Britain

open access: yesIEEE Transactions on Power Systems, 2017
In the Great Britain power system, reduced system inertia (particularly during low demand conditions) and larger possible infeed loss would make grid frequency regulation extremely challenging in future.
V. Trovato   +3 more
semanticscholar   +1 more source

Voltage source control of offshore all-DC wind farm

open access: yesThe Journal of Engineering, 2019
The fast growth of offshore all-DC wind farm will bring problems such as the weakening of grid frequency stability and the increase of equivalent grid impedance.
Renxin Yang   +3 more
doaj   +1 more source

Two-stage Channel Frequency Response Estimation in OFDM Systems [PDF]

open access: yes, 2020
This paper proposes two-stage channel frequency response estimation algorithm in communication systems with OFDM technology. Algorithm is based on Kalman filter. Pilots from current and previous OFDM symbols are used for channel estimation.
Myronchuk, Oleksandr   +2 more
core   +2 more sources

Benefits of using virtual energy storage system for power system frequency response

open access: yes, 2017
This paper forms a Virtual Energy Storage System (VESS) and validates that VESS is an innovative and cost-effective way to provide the function of conventional Energy Storage Systems (ESSs) through the utilization of the present network assets ...
Meng Cheng, S. Sami, Jianzhong Wu
semanticscholar   +1 more source

Sensitivity study of generalised frequency response functions [PDF]

open access: yes, 2008
The dependence and independence of input signal amplitudes for Generalised Frequency Response Functions(GFRF’s) are discussed based on parametric ...
Billings, S.A., Li, L.M.
core   +1 more source

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