Fuzzy Logic Control Based Single-Stage LED Driver with Power-Factor Corrections

This study introduces single-stage LED driver with power factor correction. With biasing inductor L
b
which operates in discontinuous conduction mode, offered driver combines a modified bridgeless PFC AC-DC converter & half-bridge-type LLC DC-DC resonant conversion in single-stage conversion circuit design (DCM). AC-DC resonant converter provided employs integrating techniques to produce input current shape also has soft switch features upon 2 active switching devices for decreasing its switching losses in boosting circuit efficiency. For example, suggested LED driver has low input-current ripple and low switching loss; higher power factor; lower overall harmonic distortion; and decreased component count. The suggested system's transient performance may be improved using fuzzy logic control. MATLAB/Simulink software is used to model suggested system.