Title :
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
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;
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
DOI :
10.1109/ICIT.2008.4608656
