Design of a high-frequency isolated DTHB CLLC bidirectional resonant DC-DC converter

Author

Yingying Cai ; Cong Wang ; Feng Zhao ; Ruiqi Dong

Author_Institution

Dept. of Inf. & Electr. Eng., China Univ. of Min. & Technol. (Beijing), Beijing, China

fYear

2014

fDate

Aug. 31 2014-Sept. 3 2014

Firstpage

1

Lastpage

6

Abstract

A novel high-frequency isolated dual three-level neutral point clamped (NPC) half bridge (DTHB) CLLC bidirectional resonant DC-DC converter with a symmetric series LC resonant network is proposed for a transformerless high power cascaded multi-level converter. This converter combines the advantages of bidirectional three-level half-bridge converters and the LC resonant converter and can be used in high power high voltage applications. This paper analyses the operating modes and characteristics of the equivalent circuit in detail. Then a design example is given to verify the analysis. In the end, the experimental results are shown which verify the theoretical analysis.

Keywords

DC-DC power convertors; LC circuits; bridge circuits; cascade networks; equivalent circuits; resonant power convertors; DTHB CLLC bidirectional resonant DC-DC converter; NPC half bridge DC-DC converter; bidirectional three-level half-bridge converters; cascaded multilevel converter; dual three-level neutral point clamped DC-DC converter; equivalent circuit; high power high voltage applications; symmetric series LC resonant network; transformerless high power converter; Bridge circuits; Capacitance; Capacitors; DC-DC power converters; Load flow; Zero current switching; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Transportation Electrification Asia-Pacific (ITEC Asia-Pacific), 2014 IEEE Conference and Expo

Conference_Location

Beijing

Print_ISBN

978-1-4799-4240-4

Type

conf

DOI

10.1109/ITEC-AP.2014.6941091

Filename

6941091