Results 31 to 40 of about 2,208,266 (201)

Design of a Fuzzy Logic Control System for a Battery Energy Storage System in a Photovoltaic Power Plant to Enhance Frequency Stability

Energies
The increasing penetration of photovoltaic (PV) generation in power systems is progressively displacing traditional synchronous generators, leading to a significant reduction in the system’s equivalent inertia.
Alain Silva, Mauro Amaro, Jorge Mirez
doaj   +1 more source

A Novel Control Methodology Based on the Combination of TIDF and PID^μD Controllers Enhanced by the Orca Predation Algorithm for a Hybrid Microgrid System Involving Electric Vehicles

IEEE Access, 2023
In this study, an innovative mixed regulator based on integer and fractional order control is suggested for load frequency management. Tilt Integral Derivative with Filter (TIDF) and Proportional Integral Derivative Fractional Derivative with Filter (PID
Mohammed H. Alqahtani, Ali S. Aljumah, Sulaiman Z. Almutairi, Seada Hussen Adem, Adel Oubelaid, Kareem M. AboRas   +5 more
doaj   +1 more source

Stability and Frequency Regulation of Inverters with Capacitive Inertia [PDF]

, 2017
In this paper, we address the problem of stability and frequency regulation of a recently proposed inverter. In this type of inverter, the DC-side capacitor emulates the inertia of a synchronous generator.
De Persis, Claudio, Monshizadeh, Nima, Monshizadeh, Pooya, Stegink, Tjerk, van der Schaft, Arjan   +4 more
core   +3 more sources

Influence of Wind-Turbine-Generator Power Control on the Performance of a Virtual Synchronous Machine

Energies
Implementation of renewable energy sources (RESs) in power systems can reduce the dependence on fossil-fuel-based thermal power generation systems.
Dai Orihara, Hisao Taoka, Kenji Otani
doaj   +1 more source

Characterization of Optical Frequency Transfer Over 154 km of Aerial Fiber [PDF]

, 2017
We present measurements of the frequency transfer stability and analysis of the noise characteristics of an optical signal propagating over aerial suspended fiber links up to 153.6 km in length.
Gamatham, Romeo, Gozzard, David, Grainge, Keith, Schediwy, Sascha, Wallace, Bruce   +4 more
core   +2 more sources

Virtual Inertia: Current Trends and Future Directions

Applied Sciences, 2017
The modern power system is progressing from a synchronous machine-based system towards an inverter-dominated system, with large-scale penetration of renewable energy sources (RESs) like wind and photovoltaics.
Ujjwol Tamrakar, Dipesh Shrestha, Manisha Maharjan, Bishnu P. Bhattarai, Timothy M. Hansen, Reinaldo Tonkoski   +5 more
doaj   +1 more source

Frequency control enhancement for hybrid microgrid using multi-terminal multi-function inverter

International Journal of Renewable Energy Development
Renewable energy sources (RESs) are considered a crucial energy transformation to reduce carbon emissions, so more RESs are being integrated into contemporary power systems. Power electronic converters are extensively utilized to connect power grids with
Doaa Eid, Said Elmasry, Adel El Samahy, Farag Elnagahy, Erhab Youssef   +4 more
doaj   +1 more source

Bi-level unit commitment optimized dispatching model of power system with ‘source-load’ bilateral frequency regulation

Diance yu yibiao
In power systems with a high proportion of renewable energy generation (REGs) connected to the power grid, the problem of system inertia shortage, which significantly threatens the frequency stability of the system, is becoming increasingly serious ...
LIU Haitao, ZHU Kangkai, WANG Yuhao, ZHONG Cong, ZHANG Xiaocheng   +4 more
doaj   +1 more source

A 225 MHz FM oscillator with response to 10 MHz [PDF]

, 1970
Frequency-modulated transistor oscillator is used in wideband television transmitters.

core   +1 more source

Spectrally narrow, long-term stable optical frequency reference based on a Eu$^{3+}$:Y$_{2}$SiO$_{5}$ crystal at cryogenic temperature

, 2011
Using an ultrastable continuous-wave laser at 580 nm we performed spectral hole burning of Eu$^{3+}$:Y$_{2}$SiO$_{5}$ at very high spectral resolution.
Alexander Nevsky, Andrei Troshyn, Ingo Ernsting, Qun-Feng Chen, R. M. Macfarlane, Sergey Vasilyev, Steffen Kayser, Stephan Schiller   +7 more
core   +1 more source