Title :
High gain soft-switching bidirectional DC-DC converters for eco-friendly vehicles
Author :
Minho Kwon ; Junsung Park ; Sewan Choi
Author_Institution :
Dept. of Electr. & Inf. Eng., Seoul Nat. Univ. of Sci. & Technol., Seoul, South Korea
Abstract :
This paper proposes a non-isolated soft-switching bidirectional DC-DC converter suitable for high step-up and step-down applications. The proposed converter can achieve ZVS turn on of all switches and ZCS turn off of some switches in both CCM boost and buck operations. An optimized switching strategy is presented to minimize switch current rating and achieve soft-switching in wider range. An intermediate switching pattern is introduced to carry out seamless mode change. Experimental results from a 5kW prototype are provided to validate the proposed concept.
Keywords :
DC-DC power convertors; electric vehicles; switchgear; switching convertors; zero current switching; zero voltage switching; CCM boost operation; CCM buck operation; ZCS; ZVS; ecofriendly vehicle; high gain soft-switching bidirectional DC-DC converter; nonisolated soft-switching bidirectional DC-DC converter; optimized switching strategy; power 5 kW; step-down application; step-up application; switch; switch current rating minimization;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2013 Twenty-Eighth Annual IEEE
Conference_Location :
Long Beach, CA
Print_ISBN :
978-1-4673-4354-1
Electronic_ISBN :
1048-2334
DOI :
10.1109/APEC.2013.6520536
