A new non-isolated high step-up SEPIC converter for photovoltaic applications

Author

Ghasemi, A. ; Eilaghi, S. Fazlollohzadeh ; Adib, E.

Author_Institution

Dept. of Electr. & Comput. Eng., Isfahan Univ. of Technol., Isfahan, Iran

fYear

2012

fDate

15-16 Feb. 2012

Firstpage

51

Lastpage

56

Abstract

In this paper a new high step up non-isolated SEPIC converter is introduced and analyzed. This converter is a proper choice for photovoltaic applications. The voltage gain of the proposed converter is higher than a regular SEPIC converter while the switch voltage stress is same as a regular SEPIC converter. The proposed converter is analyzed and operating modes of the proposed converter are discussed. The presented experimental results justify the validity of theoretical analysis. Also, soft switching techniques are applied to the proposed converter to achieve higher efficiency and to reduce the voltage stress across semiconductor devices.

Keywords

photovoltaic power systems; power convertors; nonisolated high step-up SEPIC converter; photovoltaic applications; semiconductor devices; soft switching techniques; switch voltage stress; theoretical analysis; Equations; Active clamp; Auto-transformer; Coupled inductors; High step-up converter; Non-Isolated SEPIC converter; Photovoltaic system;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems Technology (PEDSTC), 2012 3rd

Conference_Location

Tehran

Print_ISBN

978-1-4673-0111-4

Type

conf

DOI

10.1109/PEDSTC.2012.6183383

Filename

6183383