Bitte verwenden Sie diesen Link, um diese Publikation zu zitieren, oder auf sie als Internetquelle zu verweisen: https://hdl.handle.net/10419/243875 
Erscheinungsjahr: 
2020
Quellenangabe: 
[Journal:] Energy Reports [ISSN:] 2352-4847 [Volume:] 6 [Issue:] 2 [Publisher:] Elsevier [Place:] Amsterdam [Year:] 2020 [Pages:] 173-178
Verlag: 
Elsevier, Amsterdam
Zusammenfassung: 
In this paper, we present an inductor-less direct ac-ac converter with improved nesting-type topology. Unlike existing direct ac-ac converters, the proposed ac-ac converter combines a voltage equalizer and a switched-capacitor (SC) simple converter. Owing to the nesting conversion using two techniques, the proposed converter can provide a stepped-down voltage with small number of circuit components and high input power factor. To evaluate the performance of the proposed ac-ac converter, we compared the proposed ac-ac converter with existing inductor-less ac-ac converters, namely, flying capacitor type converter, symmetrical type converter, and traditional nesting-type converter, by theoretical analysis and simulation program with integrated circuit emphasis (SPICE) simulations. The SPICE simulations demonstrate that the proposed ac-ac converter outperforms existing inductor-less ac-ac converters in the point of circuit size and input power factor, although the power efficiency of the proposed ac-ac converter is inferior to that of the symmetrical type converter. In the case of 1/4× voltage gain, the proposed ac-ac converter achieves about 82% power efficiency and 0.58 input power factor when the output power is 200 W.
Schlagwörter: 
Inductor-less ac-ac converter
Nesting-type inverter
Step-down converter
Switched-capacitor circuits
Voltage equalizers
Persistent Identifier der Erstveröffentlichung: 
Creative-Commons-Lizenz: 
cc-by-nc-nd Logo
Dokumentart: 
Article
Erscheint in der Sammlung:

Datei(en):
Datei
Größe
658.44 kB





Publikationen in EconStor sind urheberrechtlich geschützt.