Open AccessDead‐time effect analysis of a three‐phase dual‐active bridge DC/DC converter
Author(s) -
Wang Deqiang,
Peng Fei,
Ye Jin,
Yang Yinye,
Emadi Ali
Publication year - 2018
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.2017.0701
Subject(s) - dead time , waveform , control theory (sociology) , dead zone , power (physics) , buck converter , dual (grammatical number) , forward converter , phase (matter) , three phase , computer science , voltage , engineering , boost converter , electrical engineering , physics , control (management) , art , literature , artificial intelligence , oceanography , quantum mechanics , geology
The dead‐time effect is observed in the three‐phase dual‐active bridge (DAB) DC/DC converter. The occurrence of the dead‐time effect depends on the relationship of the switching frequency, the phase shift value, the dead‐time value and the equivalent conversion ratio. The dead‐time effect may have a significant impact on the converter performance when high switching frequency, wide input and output voltage range or wide operation power range are required. Therefore, comprehensive research of the dead‐time effect is essential to improve the design of the three‐phase DAB converter over a wide operation range. In this study, all the cases of the dead‐time effect in the three‐phase DAB converter are analysed in terms of the buck, boost, and matching states. The expressions of the transmission power, constraint conditions, and key time of the dead‐time effect are derived for each state. The operation waveforms of the dead‐time effect are also presented to better understand the dead‐time effect. Finally, the analysis is verified by both simulation and experimental results.