Open AccessModulation and control method for double‐switch buck–boost converter
Author(s) -
You Jiang,
Fan Weiyan,
Ghasemi Negareh,
Vilathgamuwa Mahinda
Publication year - 2019
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.2018.5907
Subject(s) - ripple , buck converter , inductor , modulation (music) , pulse width modulation , buck–boost converter , power (physics) , boost converter , electronic engineering , computer science , control theory (sociology) , pulse frequency modulation , pulse density modulation , control (management) , pulse amplitude modulation , engineering , voltage , electrical engineering , pulse (music) , telecommunications , physics , quantum mechanics , artificial intelligence , detector , acoustics
Double‐switch buck–boost converter is a distinctly suitable candidate for the front‐end converter in two‐stage power converter systems that can perform step‐up/down power conversion. Several modulation schemes, such as synchronisation modulation (SM), interleaved modulation (IM) and combined control strategy have been proposed for this converter, and these methods yield notable advantages in different aspects, such as amplitude of inductor ripple current, conversion efficiency, power density and so on. However, the requirements of the converter are not only limited in the aforementioned metrics, but the related complexity of control system design, implementation and control performance sometimes also play important roles in industry applications. A novel modulation scheme is proposed in this study to obtain a balanced performance in terms of ripple/average current of the inductor, and to operate along with a model based control system and finally, the conversion efficiency is compared to the SM and IM modulation methods. Experimental results are presented to demonstrate the effectiveness of the proposed modulation method.