Hybrid and Modular Multilevel Converter Designs for Isolated HVDC–DC Converters [PDF]
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2018 Efficient medium and high-voltage dc-dc conversion is critical for future dc grids. This paper proposes a hybrid multilevel dc-ac converter structure that is used as the kernel of dc-dc conversion systems. Operation of the proposed dc-ac converter is suited to trapezoidal ac-voltage waveforms.
I. A. Gowaid +4 more
openaire +4 more sources
Partial Power Processing and Efficiency Analysis of dc-dc Differential Converters
Energies, 2022 This paper presents a partial power processing and an efficiency analysis of dc-dc differential converters based on the use of two basic converters of the same group: the positive or negative group.
Jéssika Melo de Andrade +2 more
doaj +1 more source
IEEE Access, 2022 In this study, a new type of Z-source converter comprising galvanic isolation transformers is introduced based on classical non-isolated Z-source converters, which are promising devices for renewable applications. Compared to the typology of conventional
Naser Fakhri +7 more
doaj +1 more source
Unified Switch Fault Detection for Cascaded Non-Isolated DC-DC Converters
, 2018 International audienceThis paper proposes a new unified switch fault detection approach for two stages cascaded non-isolated DC-DC converters under synchronous control.
Saadate, Shahrokh +2 more
core +4 more sources
IEEE Open Journal of Power Electronics, 2021 The isolated dc-dc converters with middle inductive AC links dc-dc converter have been extensively studied in modern energy conversion applications for safety and reliability, especially those featuring intermediary inductive ac-link (I2ACL ...
Nie Hou +4 more
doaj +1 more source
Novel Frequency-Doubling Modulation and Control Strategy for Three-Level Full Bridge based Power Electronic Traction Transformers [PDF]
E3S Web of Conferences, 2019 Power electronic traction transformers (PETTs) are widely investigated to substitute bulky line frequency transformers in railway traction system presently.
Li Hongbo +5 more
doaj +1 more source
Modelling approaches for DC-DC converters with switched capacitors
, 2015 In this paper we review relevant problems in the modelling of DC-DC converters with switched capacitors. We study several approaches that overcome the exposed modelling difficulties, addressing ideal and nonideal cases and using dynamic equations that ...
Rapisarda, P. +2 more
core +1 more source
Supercapacitor assisted LDO (SCALDO) techniquean extra low frequency design approach to high efficiency DC-DC converters and how it compares with the classical switched capacitor converters [PDF]
, 2013 Supercapacitor assisted low dropout regulators (SCALDO) were proposed as an alternative design approach to DC-DC converters, where the supercapacitor circulation frequency (switching frequency) is in the order of few Hz to few 10s of Hz, with an output ...
Nihal Kulatana +5 more
core +1 more source
Voltage lifting techniques for non-isolated DC/DC converters [PDF]
, 2023 This paper presents a comprehensive review that highlights the characteristics of non-isolated step-up converters based on high boost voltage lifting techniques.
David Laverty +5 more
core +1 more source
Analysis of inductor current sharing in nonisolated and isolated multiphase dc-dc converters
, 2007 Current sharing among inductors is an important issue in both isolated and nonisolated dc-dc converters. In this paper, average current sharing is in-depth modeled and analyzed for both interleaved multiphase buck converters and isolated current-doubler ...
Mao, Hong +3 more
core +2 more sources