| Title |
Clamp-mode Three-level High Voltage Gain Boost Converter using Coupled Inductor |
| Authors |
Su-Han Kim ; Hon-Nyong Cha ; Heung-Geun Kim ; Byung-Cho Choi |
| DOI |
10.6113/TKPE/2012.17.6.500 |
| Keywords |
boost converter; clamp-mode; coupled inductor; high voltage gain; 3-level converter |
| 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. |