에너지 저장장치를 포함하는 양방향 DC-DC 컨버터 모델링 및 제어기 설계
The Design of Controller and Modeling for Bi-directional DC-DC Converter including an Energy Storage System
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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 proper 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.
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 proper 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.
참고문헌 (8)
- Seung-Min Kim, "The Controller Design of Bi-directional DC-DC Converter for a Fuel Cell Energy Storage System", The Korean Solar Energy Society Spring Annual Conference (2012)
- Jin-young Yang, "Interleaved Bi-directional DC-DC Converter with High Gain", Power Electronics Annual Conference, pp.200~202 (2008)
- Daniel M. Mitchell, "DC-DC Switching Regulator Analysis", McGraw-Hill
- 임지훈, "태양광용 부스트 컨버터의 디지털 제어기 설계", 한국태양에너지학회 논문집, 30(6), pp.22~27 (2010), 한국태양에너지학회
- VlatkoVlatkovic, "Small-Signal Analysis of the Phase-Shifted PWM Converter", IEEE Transactions on Power Electronics (1992)
- M.G. Villalva1, "Voltage regulation of photovoltaic arrays: small-signal analysis and control design" (2008), Published in IET Power Electronics
- 김태훈, "Design and Control of the Phase Shift Full Bridge Converter for the On-board Battery Charger of Electric Forklifts", 전력전자학회 영문논문지, 12(1), pp.113~119 (2012), 전력전자학회
- H.Dean Venable, "The K Factor: A New Mathematical Tool", ~ (1983)