A non-isolated bidirectional Buck-Boost converter with minimized reverse-recovery losses

Author

Lu, Juejing ; Wu, Hongfei ; Shi, Wei ; Xin, Yan ; Ma, Xudong

Author_Institution

Jiangsu Key Lab. of New Energy Generation & Power Conversion, NUAA, Nanjing, China

fYear

2011

fDate

7-10 Nov. 2011

Firstpage

1085

Lastpage

1090

Abstract

A novel non-isolated bidirectional Buck-Boost converter (NI-BBBC) with a negative-coupled-inductor (NCI) is proposed. By utilizing the induced potential of introduced NCI to block the MOSFET body diode, the reverse-recovery issue of the MOSFET body diode is solved and a high efficiency achieved as a result. The control of the proposed NI-BBBC is as easy as a conventional unidirectional Buck or Boost converter and no extra soft start circuit required for the NI-BBBC. The proposed converter has advantages of high efficiency, simple control and high reliability. The topology derivation and the operation principle of proposed NI-BBBC is analyzed in detail with experimental results given to verify the analysis.

Keywords

DC-DC power convertors; power MOSFET; power system reliability; MOSFET body diode; minimized reverse-recovery losses; negative-coupled-inductor; non-isolated bidirectional buck-boost converter; reliability; soft start circuit; Equations; Inductors; MOSFET circuits; Mathematical model; RLC circuits; Reliability; Semiconductor diodes;

fLanguage

English

Publisher

ieee

Conference_Titel

IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society

Conference_Location

Melbourne, VIC

ISSN

1553-572X

Print_ISBN

978-1-61284-969-0

Type

conf

DOI

10.1109/IECON.2011.6119459

Filename

6119459