Open AccessImprovement in voltage conversion ratio for step up converter established by KY and buck–boost converters based on coupled inductor
Author(s) -
Hwu KuoIng,
Jiang WenZhuang
Publication year - 2014
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.2013.0488
Subject(s) - buck–boost converter , buck converter , boost converter , ćuk converter , inductor , converters , integrating adc , capacitor , ripple , voltage , forward converter , inductance , electronic engineering , computer science , electrical engineering , engineering
In this study, a novel voltage‐boosting converter is presented, which combines a charge pump and a coupled inductor with the turns ratio. It aims to improve the intrinsic disadvantages of the traditional boost converter and buck–boost converter. In addition, the corresponding voltage gain is greater than that of the existing step up converter combing KY and buck–boost converters. Since the proposed converter possesses an output inductor, the output current is non‐pulsating, resulting in a relatively small output voltage ripple. Above all, part of the leakage inductance energy can be recycled to the output capacitor of the buck–boost converter. In this study, the operating principles and the power flow analyses are firstly discussed in detail, and finally, an experimental prototype with a 12 V input voltage, 96 V output voltage and 60 W output power is used to verify the effectiveness of the proposed converter.