The Controller Design of Bi-directional DC-DC Converter for a Fuel Cell Energy Storage System
연료전지용 커패시터 충.방전을 위한 양방향 DC-DC 컨버터 제어기 설계
- Kim, Seung-Min (Dept. of Embedded Software, Kwangwoon University) ;
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Yang, Seung-Dae
(Dept. of Embedded Software, Kwangwoon University)
;
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Choi, Ju-Yeop
(Dept. of Embedded Software, Kwangwoon University)
;
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An, Jin-Woong
(Daegu Gyeongbuk Institute of Science & Technology)
;
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Lee, Sang-Chul
(Daegu Gyeongbuk Institute of Science & Technology)
;
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Lee, Dong-Ha
(Daegu Gyeongbuk Institute of Science & Technology)
- 김승민 (광운대학교 대학원 임베디드 SW공학과, 광운대학교 전기공학과) ;
-
양승대
(광운대학교 대학원 임베디드 SW공학과, 광운대학교 전기공학과)
;
-
최주엽
(광운대학교 대학원 임베디드 SW공학과, 광운대학교 전기공학과)
;
-
안진웅
(대구경북과학기술원)
;
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이상철
(대구경북과학기술원)
;
-
이동하
(대구경북과학기술원)
- Published : 2012.03.29
Abstract
This paper presents a design and simulation of bi-directional DC/DC boost converter for a fuel cell system. In this paper, we analyze the equivalent model of both a boost converter and a buck converter. Also we propose the controller of bi-directional DC-DC converter, which has buck mode of charging a capacitor and boost mode of discharging a capacitor. In order to design a controller, we draw bode plots of the control-to-output transfer function using specific parameters and incorporate 3pole-2zero compensator in a closed loop. As a result, it has increased PM(Phase Margin) for better dynamic performance. The proposed bi-directional DC-DC converter's 3pole-2zero compensation method has been verified with computer simulation and simulation results obtained demonstrates the validity of the proposed control scheme.
Keywords