Open AccessModified step‐up boost converter with coupled‐inductor and super‐lift techniques
Author(s) -
Bahrami Hamid,
ImanEini Hossein,
Kazemi Babak,
Taheri Alireza
Publication year - 2015
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2014.0691
Subject(s) - boost converter , inductor , voltage , leakage inductance , buck–boost converter , inductance , electronic engineering , integrating adc , ćuk converter , computer science , engineering , electrical engineering
In this study, a modified efficient step‐up boost converter is proposed. The proposed structure employs coupled‐inductor and super‐lift techniques to achieve high voltage gain. The super‐lift stage absorbs the available energy in the leakage inductance of the coupled inductor, clamps the off‐state voltage of the main switch, and reaches a moderate voltage gain. Moreover, the coupled‐inductor technique offers high voltage gain, low off‐state voltage for the main switch, and alleviates the reverse‐recovery problem of the output diode. Hence, using these two techniques, the proposed converter achieves high step‐up voltage gain and eliminates the drawbacks of the conventional boost converter. The proposed converter is analysed in details and a hardware prototype with the input voltage of 15 V, output voltage of 200 V and the nominal power of 100 W is utilised for the experimental investigation.