Four-phase interleaved TCM DC-DC buck converter with matrix inductor in battery charging application

Nguyen, Anh Dung; Chen, Shu‐Xin; Chen, Yang; Chen, Cheng‐Wei; Han, Byeongcheol; Lai, Jih‐Sheng

doi:10.1049/pel2.12017

Four-phase interleaved TCM DC-DC buck converter with matrix inductor in battery charging application

Journal Article · Tue Dec 29 23:00:00 EST 2020 · IET Power Electronics

DOI:https://doi.org/10.1049/pel2.12017· OSTI ID:1848746

^[1]; Chen, Shu‐Xin ^[2]; ^[3]; Chen, Cheng‐Wei ^[4]; ^[5]; Lai, Jih‐Sheng ^[4]

Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States). Future Energy Electronics Center. The Bradley Dept. of Electrical and Computer Engineering; Virginia Tech, Blacksburg, VA (United States)
Nanyang Technological Univ. (Singapore). Dept. of Electrical and Electronic Engineering
Southwest Jiaotong Univ., Sichuan (China). School of Electrical Engineering
Virginia Polytechnic Inst. and State Univ. (Virginia Tech), Blacksburg, VA (United States). Future Energy Electronics Center. The Bradley Dept. of Electrical and Computer Engineering
Kyungpook National Univ., Daegu (Korea, Republic of). School of Electronics Engineering

In this paper, a 1-kW DC-DC buck converter with a four-phase interleaved matrix inductor is proposed for battery charging applications. It is well-known that the DC bias on the inductor will cause high core loss as it changes the B–H characteristic. Typically, the transient conduction mode employed in high voltage applications for zero-voltageswitching of devices would cause higher inductor current ripple. The conventional approach to reduce the effect of DC bias and inductor current ripple is employing multi-phases. However, the cost and size of the converter will increase significantly. This paper proposes the matrix inductor which has a small volume and reduces the effect of the DC bias by flux sharing and flux cancellation at the same time, results in low inductor core loss. With the interleaved operations the output current ripple can be lower which is suitable for battery charging application. Besides, the comparison of the synchronous and interleaved operation is presented. A 1-kW prototype is built and the experimental results show that the peak efficiency is 99.1% and 99.2% for synchronous and interleaved control, respectively. Additionally, the output current ripple of the interleaved operation is reduced by 85% in comparison with the synchronous operation.

View Accepted Manuscript (DOE)

Research Organization:: Virginia Polytechnic Inst. and State University (Virginia Tech), Blacksburg, VA (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: EE0008347

OSTI ID:: 1848746

Alternate ID(s):: OSTI ID: 2006460

Journal Information:: IET Power Electronics, Journal Name: IET Power Electronics Journal Issue: 1 Vol. 14; ISSN 1755-4535

Publisher:: Institution of Engineering and Technology (IET)Copyright Statement

Country of Publication:: United States

Language:: English

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