A small direct sc ac-ac converter with cascade topology
Küçük Resim Yok
Tarih
2018
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
International Journal of Innovative Computing, Information and Control
Erişim Hakkı
CC0 1.0 Universal
info:eu-repo/semantics/openAccess
info:eu-repo/semantics/openAccess
Özet
To realize a small inductor-less AC-AC converter, this paper presents a cascade direct AC-AC converter using switched-capacitor (SC) techniques. The proposed AC-AC converter has cascade topology, where converter blocks with the conversion ratio of 1/2 or 2 are connected in series. Owing to the cascade topology, multiple conversion is performed to realize high conversion ratio. Furthermore, each converter block consists of only two capacitors and four switches, because no flying capacitor is necessary to realize AC-AC conversion. By reducing the number of capacitors, the proposed converter can achieve smaller circuit components and higher input power factor than conventional converters. To clarify the effectiveness of the proposed AC-AC converter, characteristic evaluation was performed by using simulation program with integrated circuit emphasis (SPICE) simulations and theoretical analysis. In the conversion ratio of 1/4, the SPICE simulation result demonstrated that the proposed AC-AC converter can improve 8% power efficiency and 0.4 input power factor from the conventional direct AC-AC converter using flying capacitors.
Açıklama
Anahtar Kelimeler
AC-AC converters, Cascade topology, Direct conversion, Multiple conversions, Switched-capacitor techniques
Kaynak
International Journal of Innovative Computing, Information and Control
WoS Q Değeri
Scopus Q Değeri
Q3
Cilt
14
Sayı
5
Künye
Kei Eguchi, Farzin Asadi, Kyoka Kuwaharal, Takaaki Ishibashi and Ichirou Oota. (2018). A small direct sc ac-ac converter with cascade topology. International Journal of Innovative Computing, Information and Control. 14(5), 1741-1753.
