標題: Delay-Lock-Loop-Based Inductorless and Electrolytic Capacitorless Pseudo-Sine-Current Controller in LED Lighting Systems
作者: Chiu, Shao-Wei
Kuo, Chun-Chieh
Su, Yi-Ping
Chen, Ke-Horng
電控工程研究所
Institute of Electrical and Control Engineering
關鍵字: Electrolytic capacitor (E-cap);light-emitting diode (LED) lighting system;pseudo-sine-current (PSC) controller;Triac dimming
公開日期: 1-Dec-2015
摘要: Light-emitting diode lighting system with the proposed pseudo-sine-current controller removes most of the external passive components, which include inductor, electrolytic capacitor, freewheel diode, blocking diode, and the bleeding circuit for Triac dimming control, for low cost and small volume. Delay-lock loop control can ensure the in-phase operation of ac input voltage and current for high power factor (PF) and low total harmonic distortion (THD). In addition, redundant power loss in Triac dimming control is eliminated to get a high efficiency of 85%. Furthermore, a high PF of 0.997 and a low THD of 7.74% are also achieved owing to in-phase line voltage and current.
URI: http://dx.doi.org/10.1109/TVLSI.2014.2368175
http://hdl.handle.net/11536/129360
ISSN: 1063-8210
DOI: 10.1109/TVLSI.2014.2368175
期刊: IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS
Volume: 23
Issue: 12
起始頁: 2852
結束頁: 2861
Appears in Collections:Articles