Analysis of energy transfer behavior of Buck -Boost converters

Author

Shulin, Liu ; Jiuming, Zhong

Author_Institution

Sch. of Electr. & Control Eng., Xi´´an Univ. of Sci. & Technol., Xi´´an, China

fYear

2011

fDate

15-17 April 2011

Firstpage

1173

Lastpage

1176

Abstract

The energy transfer behavior of Buck-Boost converters is analyzed, according to the minimum inductor-current in the turn-off period of the power switch the energy transfer modes of Buck-Boost converters can be classified into two types, i.e, complete inductor supply mode (CISM) and incomplete inductor supply mode (IISM). The critical condition and critical inductance of CISM and IISM are obtained. Comparing the minimum inductor-current with zero and output current, it is pointed out that a Buck-Boost converter has three operating modes, they are the complete inductor supply mode as well as continuous conduction mode (CISM-CCM), the incomplete inductor supply mode as well as continuous conduction mode (IISM-CCM) and the incomplete inductor supply mode as well as discontinuous conduction mode (IISM-DCM). The experiment results are in positive to the analysis.

Keywords

DC-DC power convertors; inductors; switches; CISM-CCM; DC-DC converters; IISM-CCM; buck -boost converters; complete inductor supply mode; continuous conduction mode; discontinuous conduction mode; energy transfer behavior analysis; incomplete inductor supply mode; minimum inductor-current; power switch; Capacitors; Energy exchange; Equivalent circuits; Inductance; Inductors; Switches; Switching circuits; Analysis; Buck-Boost converter; Critical Inductance; Energy Transfer Behavior; Operating Mode;

fLanguage

English

Publisher

ieee

Conference_Titel

Electric Information and Control Engineering (ICEICE), 2011 International Conference on

Conference_Location

Wuhan

Print_ISBN

978-1-4244-8036-4

Type

conf

DOI

10.1109/ICEICE.2011.5777527

Filename

5777527