Title :
An integrated insulated buck-Flyback converter to feed LED´s lamps to street lighting with reduced capacitances
Author :
Luz, Paulo C. V. ; Cosetin, Marcelo R. ; Bolzan, Priscila E. ; Maboni, Thiago ; da Silva, Marcelo F. ; do Prado, Rcardo N.
Author_Institution :
GEDRE - Intell. in Lighting, Fed. Univ. of Santa Maria, Santa Maria, Brazil
Abstract :
This paper presents an integrated insulated converter to feed power light emitting diodes (LEDs) for street lighting system applications. A Buck converter was used to implement the power factor correction (PFC) and a Flyback converter to perform the power control (PC). The integration between the power stages was made to increase the system reliability by reducing the number of controlled switches. The system aims to have high power factor and low total harmonic distortion (THD), according to the IEC 61000-3-2 standard. Also is proposed a control technique to regulate the ripple of LEDs´ current, aiming to reduce the necessary capacitance values. This turns possible the use of film capacitors that have a bigger life time them electrolytic caps, general used in these systems.
Keywords :
IEC standards; LED lamps; harmonic distortion; power control; power convertors; power factor correction; power system reliability; street lighting; thin film capacitors; IEC 61000-3-2 standard; LED current ripple regulation; LED lamp; PC; PFC; THD; capacitance reduction; film capacitor; integrated insulated buck-flyback converter; light emitting diode lamp; power control; power factor correction; power system reliability; street lighting system application; total harmonic distortion; Capacitors; Couplings; Decision support systems; Hafnium; Light emitting diodes; Integrated converters; LEDs; long lifetime converters; street lighting;
Conference_Titel :
Industrial Technology (ICIT), 2015 IEEE International Conference on
Conference_Location :
Seville
DOI :
10.1109/ICIT.2015.7125213
