Title :
Low cost intelligent LED driver for public Lighting Smart Grids
Author :
Cardesin, Jesus ; Garcia-Llera, Daniel ; Lopez-Corominas, E. ; Calleja, A.J. ; Ribas, J. ; Gacio, David
Author_Institution :
Ce3i2 Group, Univ. of Oviedo, Oviedo, Spain
Abstract :
A low-cost 18W intelligent LED driver for energy savings is presented. The intelligent LED driver has a DALI interface that allows it to be included in an upper lighting smart grid. So, it must provide galvanic isolation. The proposed LED driver is based on a two stage scheme with 24V safety voltage. The first stage is based on a PFC Flyback converter operating in the boundary conduction mode, meeting the International Standard IEC61000-3-2 Class C. The second stage is based on 3×6W low-cost and efficient DC/DC buck converters for driving LEDs. The LED lamp has a built-in ambient light sensor that measures the lumen level of the ambient light and a low-cost microcontroller adjusts the emitted luminous flux in order to obtain the desired luminous level of the ambient light contributing to great energy savings. Experimental results validate the circuit proposed.
Keywords :
DC-DC power convertors; IEC standards; LED lamps; driver circuits; electric sensing devices; energy conservation; lighting; microcontrollers; power factor correction; smart power grids; DALI interface; DC-DC buck converter; International Standard IEC61000-3-2 class C; LED lamp; PFC flyback converter; boundary conduction mode; built-in ambient light sensor; emitted luminous flux; energy saving; galvanic isolation; intelligent LED driver; lumen level measurement; microcontroller; power 18 W; public lighting smart grid; voltage 24 V; Capacitors; LED lamps; Microcontrollers; Safety; Voltage control; AC-DC POWER CONVERTORS; LIGHT EMITTING DIODES; LIGHTING; LIGHTING CONTROL; POWER FACTOR CORRECTION;
Conference_Titel :
New Concepts in Smart Cities: Fostering Public and Private Alliances (SmartMILE), 2013 International Conference on
Conference_Location :
Gijon
DOI :
10.1109/SmartMILE.2013.6708167