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Experimental verification of an improved soft-switching cascade boost converter.
- Source :
-
Electric Power Systems Research . Aug2017, Vol. 149, p1-9. 9p. - Publication Year :
- 2017
-
Abstract
- A soft switching cascade DC–DC boost converter is proposed in this paper. The proposed cascade single-switch converter has a higher step-up voltage gain and a wider turn-of period compared to classical boost converters, which tend to have a problem of narrow turn-of periods at higher output voltages. To reduce the switching losses, an auxiliary circuit was also added to the converter. It has a simple structure with only one main switch, one auxiliary switch and the minimum number of diodes. The proposed soft switching method enables the main switch to turn on at zero-voltage-transition (ZVT) and turn off at zero-voltage-switching (ZVS). Furthermore, the auxiliary switch and diodes are soft-switched thanks to this method. All semiconductor components operate under soft-switching, safe from any additional voltage and current stresses. The study presents the design considerations for the proposed converter, along with principle operations of the topology in a single switching period. Finally, experimental results, which were obtained on a laboratory prototype rated at 300 W, are also presented in the paper. The results show that the proposed cascade boost converter can be operated successfully in soft-switching operation for a variety of input voltages and a relatively wider load range, even at higher voltage outputs. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 03787796
- Volume :
- 149
- Database :
- Academic Search Index
- Journal :
- Electric Power Systems Research
- Publication Type :
- Academic Journal
- Accession number :
- 123174051
- Full Text :
- https://doi.org/10.1016/j.epsr.2017.04.015