A novel bidirectional converter with the reflex charging function

Author

Chen, L.R. ; Wang, C.S. ; Yang, W.R. ; Chu, N.Y.

Author_Institution

Dept. of Electr. Eng., Nat. Changhua Univ. of Educ., Hsinchu

fYear

2008

fDate

21-24 April 2008

Firstpage

1

Lastpage

6

Abstract

In this paper, a reflex charging strategy with the energy recovery function for a bidirectional converter (BC) is proposed to build a novel reflex-based BC (RBC) for increasing the battery charging efficiency in an uninterruptible power supply (UPS). The proposed RBC can provide a reflex charging current profile to charge the battery to obtain a high battery charging efficiency and prolong the battery life cycle. Specially, negative pulse energy of the reflex charging current profile in the proposed RBC is recovered to reduce the battery charging dissipation. A 400 W prototype is design and implemented to verify the feasibility of the proposed RBC. Compared with a typical bidirectional converter, the battery charging efficiency and the battery charging speed are improved about 10% and 8.8% by the proposed RBC, respectively.

Keywords

battery management systems; power convertors; uninterruptible power supplies; battery charging efficiency; battery life cycle; energy recovery function; negative pulse energy; power 400 W; reflex charging function; reflex-based bidirectional converter; uninterruptible power supply; Analog-digital conversion; Batteries; Capacitors; Circuits; DC-DC power converters; Energy exchange; IEC standards; Power system reliability; Prototypes; Uninterruptible power systems; battery charging efficiency; battery charging speed; battery thermal deterioration effect; bidirectional converter; uninterruptible power supply;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Technology, 2008. ICIT 2008. IEEE International Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-1705-6

Electronic_ISBN

978-1-4244-1706-3

Type

conf

DOI

10.1109/ICIT.2008.4608656

Filename

4608656