Kiwoo Park and Kyo-Beum Lee, "A Bidirectional double Uneven Power Converter Based DC-DC Converter for Solid-State Transformers," Electronics, vol. 7, no.11, pp. 1–20, Nov. 2018 -SCIE > Paper

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International Journals Kiwoo Park and Kyo-Beum Lee, "A Bidirectional double Uneven Power Converter Based DC-DC Converter for Solid-State Transformers," Electronics, vol. 7, no.11, pp. 1–20, Nov. 2018 -SCIE

2018

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This paper presents a novel bidirectional double uneven power (BiDUP) based dc-dc converter and its design and control methods.

The proposed converter utilizes two dual active bridge (DAB) converters with different power ratings in a special way to realize zero

current switching (ZCS), where both turn-on and turn-off switchings occur under the zero-current condition. A design example of the

proposed BiDUP converter is presented for medium voltage (MV) and high-power solid-state transformer (SST) systems where both

voltage transformation and bidirectional power flow are required. The main features of the proposed converter are to reduce both the

switching losses in power semiconductor devices and the filter inductance requirement simultaneously. To verify the feasibility of the

proposed converter, a simulation study on the BiDUP converter based SST in a distribution system is presented. Furthermore, to 

validate the operational principle of the proposed converter, an experimental study using a small-scale prototype is also presented. 

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