2016
DOI: 10.21622/resd.2016.02.2.112
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Transformer Isolated Buck-Boost Converters

Abstract: -Of the single-switch dc-to-dc converters, those with the buck-boost voltage transfer function offer the best potential for transformer coupling, hence isolation, at the kilowatt level. This paper highlights the limitations of the traditional magnetic coupled, buck-boost topology. Then four split-capacitor transformer-coupled topologies (specifically the Cuk, sepic, zeta, and new converters) with a common ac equivalent circuit, that do not temporarily store core magnetic energy as does the traditional isolated… Show more

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Cited by 9 publications
(14 citation statements)
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“…Accordingly, several SM circuit topologies have emerged from such constraints. Employing HFTs in these SMs, while operating at high switching frequency (<20 kHz), will reduce their total size considerably and, hence, higher power density is obtained [87]. There is always a trade-off between these requirements and the SM cost, losses, and complexity.…”
Section: Alternative Cascaded Modular Topologiesmentioning
confidence: 99%
See 1 more Smart Citation
“…Accordingly, several SM circuit topologies have emerged from such constraints. Employing HFTs in these SMs, while operating at high switching frequency (<20 kHz), will reduce their total size considerably and, hence, higher power density is obtained [87]. There is always a trade-off between these requirements and the SM cost, losses, and complexity.…”
Section: Alternative Cascaded Modular Topologiesmentioning
confidence: 99%
“…Several papers have evaluated the progress of the SM designs of isolated converter topologies for PV systems [27,85,[87][88][89][90][91]. Reference [27] presented a general structure for modular energy conversion system suitable for the large-scale PV systems, which is shown in Figure 15.…”
Section: Alternative Cascaded Modular Topologiesmentioning
confidence: 99%
“…Non-isolated and isolated versions of Ćuk and SEPIC converter have been used in the literature [25][26][27][28][29][30]. Magnetically coupled single-switch buck-boost converters (namely isolated Ćuk, Zeta, SEPIC, and P5) have been presented in [1]. Four DC-to-DC converters shown in Fig.…”
Section: Proposed Dc-to-dc Convertersmentioning
confidence: 99%
“…The conventional coupled SEPIC and Zeta converters involve turning a shunt inductor into a coupled transformer which always has a core dc bias current. Alternatively, a transformer-coupled with a splitcapacitor that are utilized in the Ćuk converter family employs the transformer without a dc flux bias [1,2]. This paper proposes converter topologies with buck-boost transfer functions that can be utilized for wireless power transfer without a dc flux bias.…”
Section: Introductionmentioning
confidence: 99%
“…Basic single-switch isolated topologies are: flyback, ZETA, SEPIC and Ćuk. Among these options, isolated SEPIC converter is a very good choice, since it provides continuous input current and can significantly reduce the dc magnetizing current with the appropriate choice of voltage multiplier cells (VMCs), allowing to use a transformer instead of coupled inductor (Williams. 2016).…”
Section: Introductionmentioning
confidence: 99%