NDLI: Two-stage LED street lighting system based on a novel single-stage AC/DC converter

Content Provider	IET Digital Library
Author	Wang, Yijie Guan, Yueshi Liang, Xinyu Wang, Wei Xu, Dianguo
Abstract	A two-stage street lighting system is presented, where the front stage is a single-stage AC/DC converter based on the sepic circuit and flyback converter. Since the sepic circuit and flyback converter share a switching device, the costs of the system can be reduced, and the efficiency and reliability can be improved. At the same time, the switch operates in quasi-resonant state, which reduces the switching losses and enhances the efficiency. The second stage is a light-emitting diode constant current circuit, which achieves the constant current control by adopting boost circuit in peak current control mode. A 100 W prototype is presented, which confirms the correctness of the analysis, the front stage work in the soft-switching condition and the efficiency is up to 83% when the system is in full load condition.
Starting Page	1374
Ending Page	1383
Page Count	10
ISSN	17554535
Volume Number	7
e-ISSN	17554543
Issue Number	Issue 6, Jun (2014)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-pel/7/6
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2013.0540
Journal	IET Power Electronics
Publisher Date	2014-02-21
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	AC-DC Power Converter Boost Circuit Constant Current Control Control of Electric Power System Current Control Efficiency Enhancement Electric Current Control Flyback Converter Full Load Condition Light Emitting Diode Light-emitting Diode Constant Current Circuit Lighting Peak Current Control Mode Power Electronics Power Supply Quasiresonant State Operation Reliability SEPIC Circuit Single-stage AC-DC Converter Soft-switching Condition Street Lighting Supervisory Circuit Switching Device Switching Loss Reduction Two-stage LED Street Lighting System
Content Type	Text
Resource Type	Article
Subject	Electrical and Electronic Engineering

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