Study of a DC-DC converter for solar LED street lighting

The conventional structure of the solar LED street lighting utilizes two converters. One is used for battery charging in day. The other is used to supply the LED street lighting from the battery in night. For cost saving, the two converters should be integrated. In this paper, a DC-DC converter is presented for the solar LED street lighting. In the day, the proposed converter is used for a charging circuit. In the night, the proposed converter is used for a discharging circuit. The operating principle and boundary condition are discussed. Finally, the simulation results are shown to verify the performance of the proposed converter.