New interleaved high step‐up converter based on a voltage multiplier cell mixed with magnetic devices. Issue 17 (28th January 2021)

• Record Type: Journal Article
• Authors: Nouri, Tohid; Shaneh, Mahdi
• Is Part Of: IET power electronics. Volume 13:Issue 17(2020)
• Page Start: 4089
• Page End: 4097
• Publication Date: 2021-01-28
• Subjects: DC‐DC power convertors -- zero current switching -- capacitors -- diodes -- inductors -- switching convertors -- voltage multipliers -- zero voltage switching; high step‐up converter -- voltage multiplier cell -- magnetic devices -- high step voltage ratio converter -- voltage gain -- CI -- transformer -- presented converters -- BIT structure -- low voltage rated semiconductors -- magnetic means -- interleaved structure -- input current ripple -- high current power applications -- high power applications -- power 600.0 W -- voltage 24.0 V -- voltage 480.0 V; Power electronics -- Periodicals; 621.31705
• DOI: 10.1049/iet-pel.2020.0591
• Languages: English
• ISSNs: 1755-4535

Abstract

Abstract : A high step voltage ratio converter is introduced in this study. In order to improve the voltage gain and the voltage stress of semiconductors, coupled‐inductor (CI) combined with built‐in transformer (BIT) and voltage multiplier cell are employed. Therefore, comparing with previously presented converters in which only CI or BIT structure was used, a greater degree of freedom is obtained. Consequently, the low voltage rated semiconductors can be utilised which in turn decrease the conduction losses. To deal with the ringing phenomenon and reverse recovery problem, zero‐current switching turn‐on/turn‐off are well achieved for switches/diodes via leakage inductances of magnetic means. Moreover, by employing passive clamps, leakage energy is recycled. Furthermore, due to the interleaved structure, the input current ripple is considerably diminished. In addition, the share of input current between different phases is equitable as a result of the charge balance of capacitors. With all these in mind, the proposed structure is a good candidate for high current and high power applications. Finally, in order to validate the effectiveness of the proposed topology, a 600 W 24 V/480 V laboratory prototype is fabricated.