TY - JOUR
T1 - Three-Port Converter With Leakage Inductance Energy Recycling for High Step-Down Applications
AU - Huynh, Kim Kien Nghiep
AU - Liang, Tsorng Juu
AU - Tran, Thai Anh Au
AU - Chen, Kai Hui
N1 - Funding Information:
This work was supported by the Ministry of Science and Technology, Taiwan, under Grant 110-2221-E006-123-MY3.
Publisher Copyright:
© 2021 IEEE.
PY - 2023/8/1
Y1 - 2023/8/1
N2 - An emerging revolution in electric vehicles (EVs) is rapidly taking over the traditional fossil fuel vehicle market. Given its safety features and user-friendliness, the dual battery system (DBS) has been adopted in various EVs. A step-down three-port converter (TPC) is essential for the DBS to supply low-voltage auxiliary power in EVs. In this article, a novel high step-down TPC is proposed by integrating the tapped-inductor technique and a buck converter for fulfilling the requirements of high step-down power conversion from sources to load with a reasonable duty cycle. It can also achieve independent power transfer among three ports. In addition, the energy stored in the leakage inductance of the coupled inductor is recycled, with voltage spikes reduced across the switches. Finally, an experimental prototype is built to verify the theoretical analysis, with a main battery of 300 V, auxiliary battery of 48 V, load voltage of 24 V, and rated power of 300 W. The highest efficiency reached is 96.6%.
AB - An emerging revolution in electric vehicles (EVs) is rapidly taking over the traditional fossil fuel vehicle market. Given its safety features and user-friendliness, the dual battery system (DBS) has been adopted in various EVs. A step-down three-port converter (TPC) is essential for the DBS to supply low-voltage auxiliary power in EVs. In this article, a novel high step-down TPC is proposed by integrating the tapped-inductor technique and a buck converter for fulfilling the requirements of high step-down power conversion from sources to load with a reasonable duty cycle. It can also achieve independent power transfer among three ports. In addition, the energy stored in the leakage inductance of the coupled inductor is recycled, with voltage spikes reduced across the switches. Finally, an experimental prototype is built to verify the theoretical analysis, with a main battery of 300 V, auxiliary battery of 48 V, load voltage of 24 V, and rated power of 300 W. The highest efficiency reached is 96.6%.
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U2 - 10.1109/JESTPE.2023.3265996
DO - 10.1109/JESTPE.2023.3265996
M3 - Article
AN - SCOPUS:85153407641
SN - 2168-6777
VL - 11
SP - 4453
EP - 4462
JO - IEEE Journal of Emerging and Selected Topics in Power Electronics
JF - IEEE Journal of Emerging and Selected Topics in Power Electronics
IS - 4
ER -