Results 31 to 40 of about 66,003 (314)

Power converters and controllers for UPS applications with backup PEM fuel cell [PDF]

open access: yes, 2008
This paper studies the practical cost-effective DC/DC converter, DC/AC inverter and AC/DC rectifier for an uninterruptible power supply (UPS) system with backup proton exchange membrane fuel cell (PEMFC).
Guo, Y, Wang, H, Zhan, Y, Zhu, J
core   +1 more source

Switched-mode converters (one quadrant) [PDF]

open access: yes, 2006
Switched-mode converters are DC/DC converters that supply DC loads with a regulated output voltage, and protection against overcurrents and short circuits.
Barrade, P
core   +1 more source

Hybrid AC/DC Microgrid Planning with Optimal Placement of DC Feeders

open access: yesEnergies, 2019
With the significant increase in DC loads (such as data and telecommunication centers) at the power distribution level, an additional set of power electronic converters are required to connect these DC loads to the AC-dominant power network.
Xiong Wu, Zhao Wang, Tao Ding, Zhiyi Li
doaj   +1 more source

Ancillary Services in Hybrid AC/DC Low Voltage Distribution Networks [PDF]

open access: yes, 2019
In the last decade, distribution systems are experiencing a drastic transformation with the advent of new technologies. In fact, distribution networks are no longer passive systems, considering the current integration rates of new agents such as ...
Barragán Villarejo, Manuel   +4 more
core   +1 more source

Dynamics estimation and generalized tuning of stationary frame current controller for grid-tied power converters [PDF]

open access: yes, 2016
The integration of AC-DC power converters to manage the connection of generation to the grid has increased exponentially over the last years. PV or wind generation plants are one of the main applications showing this trend.
Luna Alloza, Álvaro   +4 more
core   +2 more sources

Incremental SVM of controlled full-bridge rectifiers to allow IEC 61000-3-2 enforcement in power grid connection of modern elevator systems [PDF]

open access: yes, 2002
The purpose of this paper is the study of different power converters and control techniques to allow power grid connection of modern vertical operation systems, verifying IEC 61000-3-2. We focus on the harmonic current analysis produced by the industrial
Barranco, M.   +6 more
core   +1 more source

Compensation Alternatives for Power Sharing Mismatch in Multiport DC–DC–AC Converters

open access: yesIEEE Transactions on Industry Applications, 2021
This work was supported in part by the Spanish Ministry of Education and Vocational Training under the Predoctoral Grants Program FPU for the Formation in University Teaching under Grants FPU16/06829 and FPU16/05313, in part by the Government of the Principality of Asturias Under “Severo Ochoa” Program of Predoctoral Grants for Training in Research and
Geber Villa   +4 more
openaire   +2 more sources

Operation and control of MMCs using cells with power transfer capability [PDF]

open access: yes, 2015
Cells in conventional Modular Multilevel Converters (MMC) designs use a capacitor for energy storage. This means that the net power balance for each cell (neglecting losses) needs to be equal to zero, the MCC realizing therefore a power transfer between ...
Briz del Blanco, Fernando   +4 more
core   +2 more sources

A harmonic compensation approach for interlinking voltage source converters in hybrid AC-DC microgrids with low switching frequency

open access: yesCSEE Journal of Power and Energy Systems, 2018
In recent years, the hybrid AC-DC microgrid has been well accepted as it combines the advantages of both AC and DC systems. As the microgrid contains both DC sub-grids and AC sub-grids, interlinking DC-AC converters are essential.
Hao Tian, Xiaohan Wen, Yun Wei Li
doaj   +1 more source

Active Power Criterion Based High-Adaptive Differential Protection for Power Electronic Equipment

open access: yesEnergies
In flexible AC/DC microgrids, a variety of non-traditional power equipment are in operation, such as AC/DC interlinking converters. Moreover, due to the influence of interlinking converters, short-circuit fault characteristics in microgrids are much ...
Yigong Xie   +5 more
doaj   +1 more source

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