Open AccessQuadratic buck–boost converter with positive output voltage and minimum ripple point design
Author(s) -
RosasCaro Julio C.,
ValdezResendiz Jesus E.,
MayoMaldonado Jonathan C.,
AlejoReyes Avelina,
ValderrabanoGonzalez Antonio
Publication year - 2018
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.2017.0090
Subject(s) - ripple , control theory (sociology) , duty cycle , voltage , buck–boost converter , operating point , boost converter , quadratic equation , buck converter , topology (electrical circuits) , mathematics , computer science , engineering , electronic engineering , electrical engineering , geometry , control (management) , artificial intelligence , combinatorics
This study presents a novel topology of a buck–boost converter that features: (i) quadratic voltage gain; (ii) positive output voltage with respect to the input; (iii) continuous input current. Moreover, as the main contribution, (iv) it features a minimum ripple design, for which input current and output voltage ripples are simultaneously cancelled at the desired operating point. It is also shown that even though the duty cycle deviates from a nominal minimum ripple point, the converter exhibits a significantly low switching ripple percentage within a full operation range. The operation mechanism, steady‐state equations and overall analysis are presented. Furthermore, simulations and experiments were performed to validate the theory.