Title :
A high efficiency and high power factor offline converter for solid state street lighting applications
Author :
Sichirollo, Francesco ; Buso, Simone ; Spiazzi, Giorgio
Author_Institution :
Dept. of Inf. Eng. - DEI, Univ. of Padova, Padua, Italy
Abstract :
A high power factor, high efficiency offline driver for LED lighting applications is presented in this paper. Among all the suitable candidate topologies, a multiple stage structure has been chosen, to guarantee the greatest possible flexibility, thanks to the use of optimized topologies both on line side and on load side. Galvanic isolation is provided by means of an intermediate DC transformer stage. A comparison between two different implementations of the latter has been performed in order to better understand advantages and disadvantages of the two proposed topologies and find out an optimal configuration. Despite the presence of multi-stage conversion, a high (>;90%) overall efficiency is achieved. Analytical and experimental results are provided.
Keywords :
driver circuits; light emitting diodes; network topology; optimisation; power factor correction; power transformers; street lighting; DC transformer; LED lighting; galvanic isolation; line side topology; load side topology; offline driver; optimization; power factor offline converter; solid state street lighting; Bridge circuits; Equivalent circuits; Inductance; Light emitting diodes; Magnetic resonance; Switches; Topology; AC/DC converter; LED driver; street lighting;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2012 IEEE
Conference_Location :
Raleigh, NC
Print_ISBN :
978-1-4673-0802-1
Electronic_ISBN :
978-1-4673-0801-4
DOI :
10.1109/ECCE.2012.6342682
