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Design of Hybrid System for Battery Charge·Discharge using Photovoltaic/Fuel cell

태양광/연료전지용 배터리 충·방전 하이브리드 시스템 설계

  • Park, Bong-Hee (Department of Electrical Engineering, Kwangwoon University) ;
  • Jo, Yeong-Min (Department of Electrical Engineering, Kwangwoon University) ;
  • Choi, Ju-Yeop (Department of Electrical Engineering, Kwangwoon University) ;
  • Cho, Sang-Yoon (Department of Electrical Engineering, Kwangwoon University and Dahan Tech) ;
  • Choy, Ick (Department of Robot Engineering, Kwangwoon University) ;
  • Lee, Dong-Ha (DGIST)
  • 박봉희 (광운대학교 전기공학과) ;
  • 조영민 (광운대학교 전기공학과) ;
  • 최주엽 (광운대학교 전기공학과) ;
  • 조상윤 (광운대학교 전기공학과 및 다한테크) ;
  • 최익 (광운대학교 로봇학부) ;
  • 이동하 (대구경북과학기술원)
  • Received : 2014.05.25
  • Accepted : 2014.10.31
  • Published : 2014.08.30

Abstract

Photovoltaic and fuel cell systems can be used as power source in mobile robots. At this time the photovoltaic system generally generate power in daytime. The starting time of fuel cell is slower than the lithium battery. To compensate for these disadvantages, a battery charge-discharge system is used. Especially the bi-directional converter is used mainly in the charge-discharge method. The controller in a buck converter controls the input voltage of the converter to meet the maximum power point tracking(MPPT) performance. First of all, the simulations of hybrid system for battery charge-discharge system in each step simulated using solar and fuel cell modeling as input source in PSIM. Experiment of the buck and bi-directional converter system is conducted through using photovoltaic/fuel cel simulator(pCube) instead of solar and fuel cell. This hybrid system for battery charge discharge using photovoltaic/fuel cell generates emergency power for the communication system in mobile robot.

Keywords

References

  1. Bong-Hee Park, "Fuel Cell Modeling with Output Characteristics of Boost Converter", Journal of the Korea Solar Energy Society, 2013.
  2. Seung-Min Kim, "Motor Control and Battery Charger using Low Cost PV MPPT", Journal of the Korea Solar Energy Society, 2013.
  3. Gyu-Yeong Choe, "A Bi-directional Battery Charger System Integrated Photovoltaic PCS", Journal of Power Electronics, 2010.