Open AccessCurrent Stress Optimisation Strategy for Three-phase Dual Active Bridge Converter during the Start-Up Process
Author(s) -
Guofu Chen,
Xiaobin Mu,
Wang Xiang,
Honglin Jiao,
Ruixiang Hao,
Weijie Zhu
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1626/1/012064
Subject(s) - duty cycle , transformer , dual (grammatical number) , voltage , high voltage , buck–boost converter , boost converter , forward converter , three phase , process (computing) , electronic circuit , ćuk converter , stress (linguistics) , power (physics) , computer science , electronic engineering , electrical engineering , engineering , art , linguistics , philosophy , physics , literature , quantum mechanics , operating system
Three-phase dual active bridge (3p-DAB) converter is widely used in high-power bidirectional power transfer applications, due to its unique high power density and easy implementation of soft switching. In this paper, the start-up process of the 3p-DAB converter is studied. The cause of high current stress, especially in the case of heavy-load start-up is analysed, and a new start-up control strategy for the start-up process is proposed. The control strategy is helpful to reduce the current stress of the transformer and the switches by adjusting the duty-cycle and the phase shift angle coordinately without adding any other hardware circuits. Finally, based on a TMS320F28377D + XC6SLX25 controller, a 30kW 3p-DAB converter prototype with input voltage 650-750V and output voltage 400-500V is developed to verify the effectiveness of the proposed start-up strategy.