DOI QR Code
(Department of Electrical Engineering, Kwangwoon University)
;
(Department of Electrical Engineering, Kwangwoon University)
;
(Department of Robot Engineering, Kwangwoon University)
;
(DGIST)
(광운대학교 전기공학과)
;
(광운대학교 전기공학과)
;
(광운대학교 로봇학부)
;
(대구경북과학기술원)
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.