Open AccessHigh step‐up double input converter with soft switching and reduced number of semiconductors
Author(s) -
Dobakhshari Sina Salehi,
Fathi Seyyed Hamid,
Milimonfared Jafar
Publication year - 2020
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.2019.1394
Subject(s) - power (physics) , diode , boost converter , voltage , computer science , integrating adc , ćuk converter , buck–boost converter , electronic engineering , renewable energy , topology (electrical circuits) , electrical engineering , engineering , physics , quantum mechanics
A novel semi‐isolated high step‐up double‐input converter with current‐fed inputs is introduced in this study. The proposed converter can operate in double‐input mode and single‐input mode. It can manage the collected power from both inputs effectively. In addition, it makes a gentle transition between the modes, without the need for an abrupt change in pulse pattern, and does not utilise a breaker switch. Meanwhile, the converter preserves soft‐switching as well as a few number of semiconductors (three switches and three diodes). These items have improved the efficiency of the converter to 94.5%. Moreover, it is a high‐voltage gain (more than 13). Also, both input ports are current‐fed, so the input currents are smoothed. These features make the converter compatible with hybrid renewable energy applications. Furthermore, all components are engaged in both modes, which results in an improved component's utilisation factor. A thorough analysis has been conducted to prove the characteristics mentioned above of the proposed converter. Theoretical analysis has been verified by simulation and experimental results of a 200 W prototype.