High step‐up DC–DC converter using one switch and lower losses for photovoltaic applications. Issue 13 (3rd September 2018)

• Record Type: Journal Article
• Authors: Maalandish, Mohammad; Hosseini, Seyed Hossein; Jalilzadeh, Tohid; Vosoughi, Naser
• Is Part Of: IET power electronics. Volume 11:Issue 13(2018)
• Page Start: 2081
• Page End: 2092
• Publication Date: 2018-09-03
• Subjects: voltage multipliers -- mathematical analysis -- DC‐DC power convertors -- photovoltaic power systems; photovoltaic applications -- low‐voltage stress -- high‐voltage gain -- power level -- voltage multiplier units -- output voltage level -- power switch -- high power levels -- nonisolated high step‐up DC–DC converter -- capacitor -- duty cycles -- mathematical analysis -- power 290.0 W -- frequency 33.0 kHz -- C -- S; Power electronics -- Periodicals; 621.31705
• DOI: 10.1049/iet-pel.2018.5400
• Languages: English
• ISSNs: 1755-4535

Abstract

Abstract : In this study, a new non‐isolated high step‐up dc–dc converter using one switch and low‐voltage stress on semiconductors is presented for photovoltaic applications. The proposed converter consists of one switch in the input side ( S ), voltage multiplier units (D–C–L), one diode in the output side ( D o ) and one capacitor ( C o ). To achieve high‐voltage gain and power level, the proposed converter can be extended to n stages of voltage multiplier units. Hence, the output voltage level will be reasonably increased and the nominal value of power devices will be decreased. Therefore, the voltage stress across the power switch is decreasing for different duty cycles at high power levels. As a result, the efficiency of the proposed converter can be increased by using one switch with lower resistance r DS(on) . To verify the carried mathematical analysis of the proposed converter and circuit implementation are validated through both the simulation and experimental results that accordance each other well. The experimental results of two prototypes (with n = 2, 3) in about 290 W operating at 33 kHz are provided.