Results 21 to 30 of about 1,304,670 (305)

Electric field analysis of 66 kV and 110 kV SiR insulators under combined AC–DC voltages

open access: yesEnergy Reports, 2022
Insulators are the most crucial part of power systems. The insulation performance of insulators is vital for the sustainability of power systems. Recently, silicone rubber (SiR) insulators are used frequently in all sections of the power systems. In this
Mehmet Murat Ispirli   +2 more
doaj   +1 more source

Development and Challenge of DC Power System With Different Voltage Levels

open access: yes发电技术, 2018
With the increasing scale of new energy power generation, longer and longer transmission distances, and access to large-scale distributed generation and DC loads, it is increasingly difficult for existing AC transmission systems to meet the needs of ...
Yingbiao LI   +3 more
doaj   +1 more source

An Overview and Minimum Fault Ramp Rate Analysis of Impedance Based Circuit Breaker Topologies

open access: yesIEEE Access, 2023
In the advent of recent developments in a higher efficiency Direct Current (DC) system, the DC microgrid proves to be a permissible future to match the load demand with distributed power generation.
J. Mohamed Abdullah, V. Sumathi
doaj   +1 more source

A Coordinated DC Power Support Strategy for Multi-Infeed HVDC Systems

open access: yesEnergies, 2018
A DC power support strategy utilizes the flexibility of a High-voltage direct-current (HVDC) system in power modulation to optimize the operating point or compensate the power imbalance caused by a disturbance. The major impediment to the strategy is the
Chunlei Zhang   +7 more
doaj   +1 more source

AC-DC-DC Converter for Small Power Energy Storage Systems

open access: yesEnergies, 2023
The energy transformation driven by the development of renewable energy sources has become a reality for all power grid users. Prosumer energy, primarily utilizing photovoltaic installations, is one of the fastest-growing market segments. The advancement
Szymon Piasecki   +4 more
doaj   +1 more source

DC STATCOM in multi‐terminal DC distribution power system

open access: yesThe Journal of Engineering, 2017
Medium‐power DC network is supposed to be able to enhance the operation of active power distribution system. The concept of ‘DC STATCOM’ is introduced to enable better dynamic performance with reduced DC fault current in an expanded DC power system. Virtual impedance method is employed to analyse the dynamics and design the control.
Chen, Dong, Xu, Lie, Xu, Yan
openaire   +1 more source

Linear-assisted DC/DC converters with modified current-mode control applied to photovoltaic solar systems [PDF]

open access: yes, 2014
This article shows the proposal of a current-mode one-cycle control for linear-assisted DC/DC converters. Linearassisted DC/DC converters are structures that allow to take advantages of the two classic alternatives in the design of power supply systems ...
Martínez García, Herminio
core   +1 more source

Review on non-isolated DC-DC converters and their control techniques for renewable energy applications

open access: yesAin Shams Engineering Journal, 2021
In recent times, the need for energy consumption is drastically increasing to fulfill the global requirements of commercial and domestic consumer demands.
Farhan Mumtaz   +5 more
doaj   +1 more source

Special Issue “Advances in Control of Power Electronic Converters”

open access: yesApplied Sciences, 2021
The use of power converters has grown in the last years with the advances in photovoltaic and wind based power generation systems, and the progress in modern concepts such as microgrids and electric mobility.
Oswaldo Lopez-Santos, Germain Garcia
doaj   +1 more source

Nonlinear Control of an AC-connected DC MicroGrid [PDF]

open access: yes, 2016
New connection constraints for the power network (Grid Codes) require more flexible and reliable systems, with robust solutions to cope with uncertainties and intermittence from renewable energy sources (renewables), such as photovoltaic arrays.
Damm, Gilney   +4 more
core   +3 more sources

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