A Computer Simulation based Design and Control Solution for a Smart Current Controlled Flyback Converter for LED Lighting Applications

LED lighting technology is a widely used lighting solution owing to its numerous advantages such as high efficacy and long-lasting lifetime. The LED luminaires tend to degrade over time resulting in gradual reduction in light output continuously results in reduced performance. The paper proposes an all-inclusive optimal design and control solution for a smart constant current regulated flyback converter suited for LED applications in LED lighting systems. For accurate performance evaluation, the suggested approach incorporates advanced control techniques and makes use of computer simulations. The proposed LED driver can maintain constant illuminance by maintaining a constant drive current in the light engine. The system consists of a flyback converter stage that regulates the driving current by changing the duty ratio after an AC-DC rectifier stage. For the proposed converter, a computer simulation is executed in which a computer-generated degradation is adopted. It is observed that the converter modifies the duty ratio to maintain a constant drive current, which, in practice, translates to constant illumination. The developed technique assists industries and applications in maintaining a steady light output during their lifespan operations.