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마일드 하이브리드 전기 차량용 2.5kW급 8상 양방향 컨버터에 관한 연구

Title
마일드 하이브리드 전기 차량용 2.5kW급 8상 양방향 컨버터에 관한 연구
Other Titles
Research on a 2.5kW 8-Phase Bi-directional Converter for Mild Hybrid Electric Vehicles
Author
김희준
Keywords
Mild hybrid vehicle; 마일드 하이브리드 자동차; Bi-directional DC-DC converter; 양방향 DC-DC컨버터; Multi-phase; 다상; 48V-12V Dual system; 48V-12V 듀얼 시스템; Output current ripple; 출력 전류 리플
Issue Date
2017-01
Publisher
한국자동차공학회
Citation
한국자동차공학회 논문집, v. 25, No. 1, Page. 82-91
Abstract
This paper is a study on the bi-directional DC-DC converter, one of the key elements of 48V-12V dual systems in mild hybrid electric vehicles. Mild hybrid electric vehicles require a bi-directional DC-DC converter that can efficiently transmit power in two directions between a 48V battery and a 12V battery. To develop a bi-directional DC-DC converter with better price competitiveness, upgraded fuel economy, excellent performance and smaller size, this study designed, produced and presented a circuit that improved on the existing one. In the proposed 8-phase bi-directional DC-DC converter, the size of the passive element was reduced through the 8-phase interleaved topology, whereas downscaling had previously posed a difficulty. This study also designed and produced a 2.5kW class prototype. Based on the proposed 8-phase interleaved topology, a size of 227.5 (W) * 172 (L) * 64.35 (H) was achieved. In the boost mode operation and buck operation modes, the maximum efficiency was recorded at 94.04 % and 95.78 %, respectively.
URI
http://www.dbpia.co.kr/journal/articleDetail?nodeId=NODE07081024http://repository.hanyang.ac.kr/handle/20.500.11754/103100
ISSN
1225-6382
DOI
10.7467/KSAE.2017.25.1.082
Appears in Collections:
COLLEGE OF ENGINEERING SCIENCES[E](공학대학) > ELECTRICAL ENGINEERING(전자공학부) > Articles
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