Open AccessNew soft‐switched high gain three‐port DC–DC converter with coupled inductors
Author(s) -
Zahedi Saadabad Neda,
Hossein Hosseini Seyed,
Nasiri Abolfazl,
Sabahi Mehran
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.2020.0452
Subject(s) - inductor , boost converter , buck converter , buck–boost converter , ćuk converter , converters , port (circuit theory) , forward converter , voltage , electrical engineering , capacitor , power (physics) , topology (electrical circuits) , computer science , electronic engineering , engineering , physics , quantum mechanics
In this study, a new high step‐up non‐isolated three‐port DC–DC converter is proposed. A bidirectional buck–boost converter is used to interface photovoltaic battery and non‐isolated load port. Compared to the other three‐port converters, the presented topology has fewer component counts, which is the main merit of the proposed converter. The output voltage of the converter can be increased by using a three winding coupled inductor, a diode and a capacitor. Furthermore, since both main switches are turned on with zero voltage switching, switching losses is reduced and the efficiency of the converter is improved. Maximum power point tracking and maintaining the output voltage at a suitable level during the charging and discharging of the battery can be achieved by a simple controller. Moreover, according to the load power demand, three power flow paths will occur. The operation principle will be described in detail for three modes. Finally, the experiments with 400 W, 100 W, 40 V/400 V are implemented to verify the effectiveness of the converter.