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

fYear

2012

fDate

15-20 Sept. 2012

Firstpage

1188

Lastpage

1195

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ECCE.2012.6342682

Filename

6342682