Open AccessImproved TPS control for DAB DC–DC converter to eliminate dual‐side flow back currents
Author(s) -
Luo Suhua,
Wu Fengjiang,
Wang Guizhong
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.2019.0562
Subject(s) - converters , dual (grammatical number) , power flow , inductor , modulation (music) , electrical engineering , voltage , power (physics) , control theory (sociology) , electronic engineering , engineering , computer science , physics , control (management) , electric power system , acoustics , art , literature , artificial intelligence , quantum mechanics
In this study, the essential reason for causing the dual‐side flow back currents in the isolated dual active bridge (DAB) DC–DC converter is originally revealed first. It is because the polarities of the AC side output voltages of the two H‐bridge converters in DAB converter are not able to be always kept the same as that of the inductor current in the conventional modulation strategies. An improved triple‐phase‐shift (ITPS) control is proposed according to the analysis results to ensure that the dual‐side flow back currents are eliminated, and all of the power switches achieve soft switching in the entire power range. The detailed experimental results of the ITPS control validate its validity and feasibility.