Low voltage dc-to-dc converter combining flyback and boost converter for charging an auxiliary battery in hybrid electric vehicle

Author

Ju-Young Lee ; Feel-Soon Kang

Author_Institution

Dept. of Control & Instrum. Eng., Hanbat Nat. Univ., Daejeon, South Korea

fYear

2013

fDate

22-25 April 2013

Firstpage

286

Lastpage

288

Abstract

It presents a low voltage dc-to-dc converter (LDC), which needs to charge an auxiliary battery in a hybrid electric vehicle. LDC locates between an inverter and a main battery. Because it is always on board, a small and light design is very important to increase fuel efficiency and performance. The proposed LDC integrates a boost converter into a flyback converter. It substitutes the primary of a transformer for a boosting inductor. When supplying a low dc voltage to electric field systems, LDC operates in a step-down mode. On the other side, when starting, it operates in a step-up mode to supply a high dc voltage. According to operational modes, theoretical analysis is done and proven by computer-aided simulation using PSIM.

Keywords

DC-DC power convertors; battery powered vehicles; hybrid electric vehicles; inductors; invertors; secondary cells; transformers; LDC; PSIM; auxiliary battery charging; boost converter; boosting inductor; computer-aided simulation; electric field systems; flyback converter; fuel efficiency; high dc voltage; hybrid electric vehicle; inverter; low voltage DC-to-DC converter; step-up mode; transformer; Batteries; Computational modeling; Electric fields; Hybrid electric vehicles; Inductance; Inductors; Low voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Drive Systems (PEDS), 2013 IEEE 10th International Conference on

Conference_Location

Kitakyushu

ISSN

2164-5256

Print_ISBN

978-1-4673-1790-0

Electronic_ISBN

2164-5256

Type

conf

DOI

10.1109/PEDS.2013.6527030

Filename

6527030