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http://dx.doi.org/10.6113/TKPE.2012.17.6.500

Clamp-mode Three-level High Voltage Gain Boost Converter using Coupled Inductor  

Kim, Su-Han (School of Energy Eng., Kyungpook National University)
Cha, Hon-Nyong (School of Energy Eng., Kyungpook National University)
Kim, Heung-Geun (Dept. of Electrical Eng., Kyungpook National University)
Choi, Byung-Cho (School of Electronics Eng., Kyungpook National University)
Publication Information
The Transactions of the Korean Institute of Power Electronics / v.17, no.6, 2012 , pp. 500-506 More about this Journal
Abstract
In this paper, a non-isolated high step-up and high efficiency boost converter is proposed. By using the 3-level boost converter structure, the proposed converter can obtain higher voltage gain than conventional high step-up converters. The voltage spike of the switching device is well clamped by using the clamp circuit composed of a clamp diode and a capacitor and the energy of the leakage inductor of coupled inductor is effectively transferred to output. Due to the 3-level structure, the equivalent switching frequency of the coupled inductor is doubled, which results in reduced inductor size. A 500 W prototype converter is built and tested to verify performance of the proposed converter.
Keywords
boost converter; clamp-mode; coupled inductor; high voltage gain; 3-level converter;
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