Single stage active power factor correction circuit for street led light with battery backup

This paper proposes a single-stage active power factor correction circuit for street LED light with battery back-up. the buck–boost converter and flyback converter are combined to achieve optimal performance. the first part of the integrated LED driver, the buck-boost converter is used to adjust the power while operating in the discontinuous conduction operation. the second part of the driver, the flyback converter provides regulated voltage to the LEDs. the battery backup circuit charges the battery when ac input power is available and provides power to LED lamp when input power supply is not available. the proposed LED driver was designed for 100 W output power and tested by PSpice simulation. the simulation results obtained are given in the paper to demonstrates the functionality of the proposed LED driver system. the result show good operation and performance of proposed LED driver.