Open AccessFamily of two‐port switching networks with ripple power decoupling and output voltage step‐up functions
Author(s) -
Liu Yonglu,
Sun Yao,
Su Mei
Publication year - 2017
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.2016.0411
Subject(s) - decoupling (probability) , ripple , voltage , control theory (sociology) , computer science , electronic engineering , engineering , electrical engineering , control (management) , control engineering , artificial intelligence
Active decoupling methods are developed for tackling the inherent second‐order ripple power. However, in all the active decoupling methods developed for single‐phase current source rectifier (SCSR), the dc output voltage is limited to half the peak amplitude of the ac source voltage. That limits SCSR's wide applications. Addressing that issue this study proposes a family of two‐port switching networks (TSNs) to achieve ripple power decoupling and output voltage step‐up at the same time. The main circuit is formed by inserting the TSN into the dc link of a conventional SCSR. Compared with the most existing SCSRs with decoupling capability, no extra semiconductor devices are added. Related operating principle and modulation scheme are described first. Then the selection of the decoupling capacitance is discussed. A closed‐loop control strategy is also introduced to achieve good compensation performance. Finally, simulations and experimental results are presented to show the effectiveness.