PROJECT TITLE :

Delay-Lock-Loop-Based Inductorless and Electrolytic Capacitorless Pseudo-Sine-Current Controller in LED Lighting Systems

ABSTRACT:

Lightweight-emitting diode lighting system with the proposed pseudo-sine-current controller removes most of the external passive parts, which embrace inductor, electrolytic capacitor, freewheel diode, blocking diode, and also the bleeding circuit for Triac dimming management, for low cost and tiny volume. Delay-lock loop management can guarantee the in-part operation of ac input voltage and current for top power issue (PF) and low total harmonic distortion (THD). In addition, redundant power loss in Triac dimming management is eliminated to induce a high potency of eighty five%. Furthermore, a high PF of zero.997 and an occasional THD of 7.seventy four% are achieved due to in-section line voltage and current.