Abstract
The LEDs require LED drivers to operate, and their performance depends on the output of the LED drivers. As a result, cost-effective LED drivers with ripple-free current output, high efficiency, and unity power factor (UPF) rectification are highly valued in the lighting sector. Even though the conventional rectification technologies for LEDs are economical and straight forward, they distort the power factor of the supply and introduce harmonics in the grid. In this regard, this article proposes a self-voltage balanced sensor-less multilevel rectifier (MLR) topology for driving the LED while maintaining UPF at all operating conditions. This article implements a ripple cancellation (RC) system to prevent the stroboscopic effect caused by current ripples fed to LEDs. A complete reliability study of the MLR with RC system has been carried out, as well as component variation and its impact on reliability.
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