| Title |
Energy Saving Type OF-LED Illuminated Display Board System with MPPT and CCVC Algorithms |
| Authors |
Seong-Ryong Lee ; Chil-Hwan Jeon ; Su-Won Lee ; Eun-Chul Lee |
| Keywords |
OF-LED ; MPPT ; CCVC ; Energy Saving ; Illuminated Display Board System |
| Abstract |
This paper studies the OF-LED(Optical Fiber-LED) illuminated display board system for energy saving. The OF-LED illuminated display board system has PV module, batteries, charge & discharge system, and dynamic full color display controller. Both maximum power point tracker (MPPT) and constant current & constant voltage controls (CCVC) are used to govern the charging system. This system improves the charging efficiency of battery. The system is compact and operates only by PV except the rainy days when the sun is unfavorable. In the system, display control and charging-discharging control by on-chip microprocessor are simultaneously carried out. To verify the proposed system, the simulation and experiment results show the operating characteristics with a laboratory prototype. |