Proposal of a dc-dc converter with wide conversion range used in photovoltaic systems and utility power grid for the universal voltage range

Author

De Britto, Jonas Reginaldo ; da Silva, Fábio Vincenzi Romualdo ; Coelho, Ernane Antônio Alves ; De Freitas, Luis Carlos ; Farias, Valdeir José ; Vieira, J.B.

Author_Institution

Fac. de Eng. Eletr.-FEELT, Univ. Fed. de Uberlandia-UFU, Uberlandia, Brazil

fYear

2010

fDate

21-25 Feb. 2010

Firstpage

2258

Lastpage

2263

Abstract

This paper describes the design and implementation of a Boost connected in cascade with a Quadratic Buck converter, with just one active switch, used to drive a LED string for public and private lighting purposes. The proposed converter supports a wide input voltage range that makes it possible to be supplied from 12 V_DC to 340 V_DC (240 V_AC), without any additional adjustment. It can be used in hybrid electrical systems supplied by photovoltaic systems or 110/220 V_AC from the utility power grid. Experimental results from an 11 W prototype are also presented.

Keywords

DC-DC power convertors; LED lamps; photovoltaic power systems; power grids; LED string; conversion range; dc-dc converter; photovoltaic systems; power 11 W; private lighting; public lighting; quadratic buck converter; universal voltage range; utility power grid; voltage 12 V to 340 V; Analog-digital conversion; Buck converters; DC-DC power converters; LED lamps; Light emitting diodes; Photovoltaic systems; Power grids; Proposals; Switches; Voltage; DC-DC converter; LED string; photovoltaic systems and wide voltage conversion range;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2010 Twenty-Fifth Annual IEEE

Conference_Location

Palm Springs, CA

ISSN

1048-2334

Print_ISBN

978-1-4244-4782-4

Electronic_ISBN

1048-2334

Type

conf

DOI

10.1109/APEC.2010.5433551

Filename

5433551