Open AccessVoltage unbalances mitigation in bipolar DC microgrids using a novel three‐port multidirectional buck–boost converter
Author(s) -
Ahmadi Taha
Publication year - 2021
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/pel2.12024
Subject(s) - microgrid , converters , buck converter , power (physics) , port (circuit theory) , voltage , computer science , energy storage , buck–boost converter , ćuk converter , electrical engineering , boost converter , forward converter , grid , electronic engineering , engineering , physics , mathematics , geometry , quantum mechanics
Abstract This study proposes a new three‐port multidirectional DC‐DC converter (TMC) to integrate an energy storage system (ESS) or main grid to a bipolar DC microgrid (BDCMG). This converter provides a voltage balancing function and controls the input and output power of the BDCMG so that during overload conditions injects power to the BDCMG and in low‐load conditions saves the available power to an ESS or transfers to the main grid. Given this integration of activities, the total number of converters in the BDCMG can be decreased. This feature enables that the converter can be used in portable systems where the overall efficiency and weight of the system are important. In the study, the performance of the proposed converter is analysed. Simulation studies are performed and a BDCMG laboratory setup is implemented in order to evaluate the performance of the proposed TMC.