Mobile QR Code QR CODE : The Korean Institute of Power Electronics
Title An Improved Non-Isolated 3-Level High Step-Up Boost Converter
Authors Su-Han Kim ; Hon-Nyong Cha ; Heung-Geun Kim ; Byung-Cho Choi
DOI 10.6113/TKPE/2013.18.4.342
Page pp.342-348
ISSN 1229-2214
Keywords boost converter; duality principle; high voltage gain; 3-level converter; soft-switching.
Abstract In this paper, an improved non-isolated 3-level high step-up boost converter is proposed. By using the well known duality principle, the proposed converter is derived from two-phase buck converter. Compared with the traditional boost converter and 3-level boost converter, the proposed converter can obtain very high voltage conversion ratio and the voltage stress of switching devices and diodes is only 1/4 of the output voltage. A 1 kW prototype converter is built and tested to verify performances of the proposed converter.