Results 31 to 40 of about 66,529 (315)

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

Cost and losses associated with offshore wind farm collection networks which centralise the turbine power electronic converters [PDF]

open access: yes, 2013
Costs and losses have been calculated for several different network topologies, which centralise the turbine power electronic converters, in order to improve access for maintenance.
Anaya-Lara, Olimpo, Parker, Max
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

Adaptive stabilization of uncontrolled rectifier based AC-DC power systems feeding constant power loads [PDF]

open access: yes, 2017
It is known that, when tightly regulated, actively controlled power converters behave as constant power loads (CPLs). These loads can significantly degrade the stability of their feeder system.
Areerak, Kongpan   +5 more
core   +2 more sources

A novel concept of unidirectional bridgeless combined boost-buck converter for EV battery chargers [PDF]

open access: yes, 2015
This paper presents a novel concept of unidirectional bridgeless combined boost-buck converter for electric vehicles (EVs) battery chargers. The proposed converter is composed by two power stages: an ac-dc front-end converter used to interface the ...
Afonso, João L.   +5 more
core   +1 more source

Impedance modelling and parametric sensitivity of a VSC-HVDC system: New insights on resonances and interactions [PDF]

open access: yes, 2018
Pervasiveness of power converters in the electric power system is expected in the future. Such large penetration will change the current power system dynamics leading to uncertain, unexpected, and potentially critical responses.
Agbemuko, A. J.   +3 more
core   +3 more sources

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

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

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

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

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