A New High Efficiency ZVZCS Bi-directional DC/DC Converter for 42V Power System of HEVs

Author

Kim, Chong-Eun ; Han, Sang-Kyoo ; Yi, Kang-Hyun ; Lee, Woo-Jin ; Moon, Gun-Woo

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon

fYear

2005

fDate

16-16 June 2005

Firstpage

792

Lastpage

797

Abstract

A new high efficiency zero-voltage and zero- current switching (ZVZCS) bidirectional DC/DC converter is proposed in this paper. The proposed converter consists of two half-bridge cells as the input and output stages, symmetrically. MOSFETs of input stage are turned-on in ZVS condition, and those of output stage are turned-off in ZCS condition. In addition, MOSFETs of input and output stages have low voltage stresses clamped to input and output voltage, respectively. Therefore, the proposed converter has high efficiency and high power density. The operational principles are analyzed and the advantages of the proposed converter are described. The 300 W prototype of the proposed converter is implemented for 42 V hybrid electric vehicle (HEV) application in order to verify the operational principles and advantages

Keywords

DC-DC power convertors; hybrid electric vehicles; power MOSFET; switching convertors; zero current switching; zero voltage switching; 300 W; 42 V; HEV; MOSFET; ZCS; ZVS; half-bridge cells; high efficiency ZVZCS bidirectional DC/DC converter; hybrid electric vehicle; voltage stresses; zero- current switching bidirectional DC/DC converter; zero-voltage switching bidirectional DC/DC converter; Bidirectional control; DC-DC power converters; Hybrid electric vehicles; Low voltage; MOSFETs; Power systems; Prototypes; Stress; Zero current switching; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics Specialists Conference, 2005. PESC '05. IEEE 36th

Conference_Location

Recife

Print_ISBN

0-7803-9033-4

Type

conf

DOI

10.1109/PESC.2005.1581717

Filename

1581717