Repository logo
 
No Thumbnail Available
Publication

A buck-boost converter with extended duty-cycle range in the buck voltage region for renewable energy sources

Use this identifier to reference this record.
Name:Description:Size:Format: 
A buck-boost_JMonteiro.pdf8.37 MBAdobe PDF Download

Advisor(s)

Abstract(s)

Buck-boost DC-DC converters are useful as DC grid interfaces for renewable energy resources. In the classical buck-boost converter, output voltages smaller than the input voltage (the buck region) are observed for duty cycles between 0 and 0.5. Several recent buck-boost converters have been designed to present higher voltage gains. Nevertheless, those topologies show a reduced duty-cycle range, leading to output voltages in the buck region, and thus require the use of very low duty cycles to achieve the lower range of buck output voltages. In this work, we propose a new buck-boost DC-DC converter that privileges the buck region through the extension of the duty-cycle range, enabling buck operation. In fact, the converter proposed here allows output voltages below the input voltage even with duty cycles higher than 0.6. We present the analysis, design, and testing of the extended buck-boost DC-DC converter. Several tests were conducted to illustrate the characteristics of the extended buck-boost DC-DC converter. Test results were obtained using both simulation software and a laboratory prototype.

Description

Keywords

Buck-boost DCDC converter Single-switch High output voltage gain

Citation

MONTEIRO, Joaquim; [et al] – A buck-boost converter with extended duty-cycle range in the buck voltage region for renewable energy sources. Electronics. eISSN2079-9292. Vol. 12, N.º 3 (2023), pp. 1-20.

Organizational Units

Journal Issue

Publisher

MDPI

CC License

Altmetrics