Open AccessImproved dynamic response strategy with dual phase‐shift control for dual‐active‐bridge DC–DC converter
Author(s) -
Sun Jiazheng,
Sun Qiuye,
Ma Dazhong,
Wang Panfeng
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.2020.0076
Subject(s) - duty cycle , control theory (sociology) , dual (grammatical number) , dc bias , power (physics) , transient (computer programming) , steady state (chemistry) , computer science , voltage , topology (electrical circuits) , engineering , control (management) , physics , chemistry , electrical engineering , art , literature , quantum mechanics , artificial intelligence , operating system
In this study, an improved dynamic response strategy with dual phase‐shift (IDR‐DPS) for dual‐active‐bridge (DAB) DC–DC converter is proposed to improve system performance and eliminate DC bias caused by power mutation. Firstly, a unique combination of independent variables about inner and outer phase shift duty ratios is calculated at a given reference power through combining the minimum current stress calculation method with DPS control, which makes DAB run efficiently. On this basis, a DC bias elimination method is proposed to eliminate DC bias current in half a switching period through modifying inner duty ratios during transient process and drive DAB to reach new steady state quickly. Finally, a DAB topology platform is built to perform experiments of proposed IDR‐DPS strategy and traditional direct control, the effectiveness of the proposed strategy is verified by comparative experiments.